78 Commits

Author SHA1 Message Date
Blagovest Kolenichev
2e229cb024 Merge android-4.9.94 (8683408) into msm-4.9
* refs/heads/tmp-8683408:
  ANDROID: Add build server config for cuttlefish.
  ANDROID: Add defconfig for cuttlefish.
  FROMLIST: staging: Android: Add 'vsoc' driver for cuttlefish.
  Revert "ANDROID: proc: make oom adjustment files user read-only"
  Revert "ANDROID: fixup! proc: make oom adjustment files user read-only"
  Linux 4.9.94
  Revert "xhci: plat: Register shutdown for xhci_plat"
  vrf: Fix use after free and double free in vrf_finish_output
  net sched actions: fix dumping which requires several messages to user space
  strparser: Fix sign of err codes
  net/mlx4_core: Fix memory leak while delete slave's resources
  vhost_net: add missing lock nesting notation
  team: move dev_mc_sync after master_upper_dev_link in team_port_add
  route: check sysctl_fib_multipath_use_neigh earlier than hash
  vhost: validate log when IOTLB is enabled
  net/mlx4_en: Fix mixed PFC and Global pause user control requests
  net/sched: fix NULL dereference on the error path of tcf_skbmod_init()
  net/sched: fix NULL dereference in the error path of tunnel_key_init()
  net/mlx5e: Sync netdev vxlan ports at open
  vti6: better validate user provided tunnel names
  ip6_tunnel: better validate user provided tunnel names
  ip6_gre: better validate user provided tunnel names
  ipv6: sit: better validate user provided tunnel names
  ip_tunnel: better validate user provided tunnel names
  net: fool proof dev_valid_name()
  bonding: process the err returned by dev_set_allmulti properly in bond_enslave
  bonding: move dev_mc_sync after master_upper_dev_link in bond_enslave
  bonding: fix the err path for dev hwaddr sync in bond_enslave
  vlan: also check phy_driver ts_info for vlan's real device
  vhost: correctly remove wait queue during poll failure
  sky2: Increase D3 delay to sky2 stops working after suspend
  sctp: sctp_sockaddr_af must check minimal addr length for AF_INET6
  sctp: do not leak kernel memory to user space
  r8169: fix setting driver_data after register_netdev
  pptp: remove a buggy dst release in pptp_connect()
  net/sched: fix NULL dereference in the error path of tcf_bpf_init()
  netlink: make sure nladdr has correct size in netlink_connect()
  net/ipv6: Increment OUTxxx counters after netfilter hook
  net/ipv6: Fix route leaking between VRFs
  net: fix possible out-of-bound read in skb_network_protocol()
  ipv6: the entire IPv6 header chain must fit the first fragment
  arp: fix arp_filter on l3slave devices
  clk: at91: fix clk-generated compilation
  random: use lockless method of accessing and updating f->reg_idx
  virtio_net: check return value of skb_to_sgvec in one more location
  virtio_net: check return value of skb_to_sgvec always
  rxrpc: check return value of skb_to_sgvec always
  ipsec: check return value of skb_to_sgvec always
  perf tools: Fix copyfile_offset update of output offset
  mtd: mtd_oobtest: Handle bitflips during reads
  Input: goodix - disable IRQs while suspended
  sdhci: Advertise 2.0v supply on SDIO host controller
  cxgb4vf: Fix SGE FL buffer initialization logic for 64K pages
  EDAC, mv64x60: Fix an error handling path
  tty: n_gsm: Allow ADM response in addition to UA for control dlci
  blk-mq: fix kernel oops in blk_mq_tag_idle()
  scsi: libsas: initialize sas_phy status according to response of DISCOVER
  scsi: libsas: fix error when getting phy events
  scsi: libsas: fix memory leak in sas_smp_get_phy_events()
  bcache: segregate flash only volume write streams
  bcache: stop writeback thread after detaching
  drm/vc4: Fix resource leak in 'vc4_get_hang_state_ioctl()' in error handling path
  selftests: kselftest_harness: Fix compile warning
  hsr: fix incorrect warning
  vxlan: dont migrate permanent fdb entries during learn
  s390/dasd: fix hanging safe offline
  ACPICA: Disassembler: Abort on an invalid/unknown AML opcode
  ACPICA: Events: Add runtime stub support for event APIs
  ACPICA: OSL: Add support to exclude stdarg.h
  cpuidle: dt: Add missing 'of_node_put()'
  Bluetooth: Send HCI Set Event Mask Page 2 command only when needed
  clk: meson: meson8b: add compatibles for Meson8 and Meson8m2
  net: ena: disable admin msix while working in polling mode
  net: ena: add missing unmap bars on device removal
  net: ena: add missing return when ena_com_get_io_handlers() fails
  net: ena: fix race condition between submit and completion admin command
  net: ena: fix rare uncompleted admin command false alarm
  iio: magnetometer: st_magn_spi: fix spi_device_id table
  sparc64: ldc abort during vds iso boot
  net: fec: Add a fec_enet_clear_ethtool_stats() stub for CONFIG_M5272
  sctp: fix recursive locking warning in sctp_do_peeloff
  bnx2x: Allow vfs to disable txvlan offload
  crypto: omap-sham - fix closing of hash with separate finalize call
  crypto: omap-sham - buffer handling fixes for hashing later
  geneve: add missing rx stats accounting
  stmmac: fix ptp header for GMAC3 hw timestamp
  coresight: tmc: Configure DMA mask appropriately
  coresight: Fix reference count for software sources
  pinctrl: meson-gxbb: remove non-existing pin GPIOX_22
  X.509: Fix error code in x509_cert_parse()
  xen: avoid type warning in xchg_xen_ulong
  skbuff: only inherit relevant tx_flags
  perf tests: Decompress kernel module before objdump
  perf tools: Decompress kernel module when reading DSO data
  net: emac: fix reset timeout with AR8035 phy
  Fix loop device flush before configure v3
  ARM: dts: armadillo800eva: Split LCD mux and gpio
  MIPS: kprobes: flush_insn_slot should flush only if probe initialised
  MIPS: mm: adjust PKMAP location
  MIPS: mm: fixed mappings: correct initialisation
  sched/deadline: Use the revised wakeup rule for suspending constrained dl tasks
  perf/core: Correct event creation with PERF_FORMAT_GROUP
  e1000e: Undo e1000e_pm_freeze if __e1000_shutdown fails
  KVM: nVMX: Update vmcs12->guest_linear_address on nested VM-exit
  nvme: fix hang in remove path
  nvme-pci: fix multiple ctrl removal scheduling
  ARM: imx: Add MXC_CPU_IMX6ULL and cpu_is_imx6ull
  net: phy: avoid genphy_aneg_done() for PHYs without clause 22 support
  mceusb: sporadic RX truncation corruption fix
  cx25840: fix unchecked return values
  cxl: Unlock on error in probe
  igb: fix race condition with PTP_TX_IN_PROGRESS bits
  e1000e: fix race condition around skb_tstamp_tx()
  ARM: dts: qcom: ipq4019: fix i2c_0 node
  tags: honor COMPILED_SOURCE with apart output directory
  iwlwifi: fix min API version for 7265D, 3168, 8000 and 8265
  iwlwifi: pcie: only use d0i3 in suspend/resume if system_pm is set to d0i3
  iwlwifi: tt: move ucode_loaded check under mutex
  iwlwifi: mvm: Fix command queue number on d0i3 flow
  watchdog: f71808e_wdt: Add F71868 support
  iwlwifi: mvm: fix firmware debug restart recording
  perf report: Ensure the perf DSO mapping matches what libdw sees
  perf header: Set proper module name when build-id event found
  net/mlx4: Check if Granular QoS per VF has been enabled before updating QP qos_vport
  net/mlx4: Fix the check in attaching steering rules
  sit: reload iphdr in ipip6_rcv
  macsec: check return value of skb_to_sgvec always
  skbuff: return -EMSGSIZE in skb_to_sgvec to prevent overflow
  ip6_tunnel: fix traffic class routing for tunnels
  bio-integrity: Do not allocate integrity context for bio w/o data
  Fix serial console on SNI RM400 machines
  cxgb4: fix incorrect cim_la output for T6
  powerpc/8xx: fix mpc8xx_get_irq() return on no irq
  drm/omap: fix tiled buffer stride calculations
  RDMA/hfi1: fix array termination by appending NULL to attr array
  RDMA/iw_cxgb4: Avoid touch after free error in ARP failure handlers
  net: phy: micrel: Restore led_mode and clk_sel on resume
  mISDN: Fix a sleep-in-atomic bug
  arm64: kernel: restrict /dev/mem read() calls to linear region
  qlcnic: Fix a sleep-in-atomic bug in qlcnic_82xx_hw_write_wx_2M and qlcnic_82xx_hw_read_wx_2M
  perf trace: Add mmap alias for s390
  ath10k: add BMI parameters to fix calibration from DT/pre-cal
  drm/amdkfd: NULL dereference involving create_process()
  powerpc/spufs: Fix coredump of SPU contexts
  clk: Fix __set_clk_rates error print-string
  clk: scpi: fix return type of __scpi_dvfs_round_rate
  KVM: SVM: do not zero out segment attributes if segment is unusable or not present
  mtd: nand: check ecc->total sanity in nand_scan_tail
  mtd: nand: gpmi: Fix gpmi_nand_init() error path
  dt-bindings: display: sun4i: Add allwinner,tcon-channel property
  drm/sun4i: Ignore the generic connectors for components
  clk: at91: fix clk-generated parenting
  net: freescale: fix potential null pointer dereference
  SUNRPC: ensure correct error is reported by xs_tcp_setup_socket()
  rtc: interface: Validate alarm-time before handling rollover
  rtc: opal: Handle disabled TPO in opal_get_tpo_time()
  i40evf: fix merge error in older patch
  rtc: m41t80: fix SQW dividers override when setting a date
  cxgb4: Fix netdev_features flag
  cxgb4: FW upgrade fixes
  net/mlx5: avoid build warning for uniprocessor
  arm64: futex: Fix undefined behaviour with FUTEX_OP_OPARG_SHIFT usage
  backlight: Report error on failure
  dmaengine: imx-sdma: Handle return value of clk_prepare_enable
  powerpc/[booke|4xx]: Don't clobber TCR[WP] when setting TCR[DIE]
  ovl: filter trusted xattr for non-admin
  HID: i2c: Call acpi_device_fix_up_power for ACPI-enumerated devices
  netfilter: conntrack: don't call iter for non-confirmed conntracks
  x86/efi: Disable runtime services on kexec kernel if booted with efi=old_map
  hdlcdrv: Fix divide by zero in hdlcdrv_ioctl
  wl1251: check return from call to wl1251_acx_arp_ip_filter
  rt2x00: do not pause queue unconditionally on error path
  ASoC: Intel: sst: Fix the return value of 'sst_send_byte_stream_mrfld()'
  pinctrl: baytrail: Enable glitch filter for GPIOs used as interrupts
  backlight: tdo24m: Fix the SPI CS between transfers
  blk-mq: fix race between updating nr_hw_queues and switching io sched
  IB/rdmavt: Allocate CQ memory on the correct node
  gpio: label descriptors using the device name
  vfb: fix video mode and line_length being set when loaded
  mac80211: Fix setting TX power on monitor interfaces
  ACPI: EC: Fix debugfs_create_*() usage
  irqchip/gic-v3: Fix the driver probe() fail due to disabled GICC entry
  scsi: mpt3sas: Proper handling of set/clear of "ATA command pending" flag.
  scsi: libiscsi: Allow sd_shutdown on bad transport
  ASoC: Intel: cht_bsw_rt5645: Analog Mic support
  ASoC: Intel: Skylake: Disable clock gating during firmware and library download
  media: videobuf2-core: don't go out of the buffer range
  hwmon: (ina2xx) Make calibration register value fixed
  PM / devfreq: Fix potential NULL pointer dereference in governor_store
  VFS: close race between getcwd() and d_move()
  net/mlx4_en: Change default QoS settings
  ACPI / video: Default lcd_only to true on Win8-ready and newer machines
  rds; Reset rs->rs_bound_addr in rds_add_bound() failure path
  l2tp: fix missing print session offset info
  perf probe: Add warning message if there is unexpected event name
  thermal: power_allocator: fix one race condition issue for thermal_instances list
  ARM: dts: ls1021a: add "fsl,ls1021a-esdhc" compatible string to esdhc node
  i40iw: Correct Q1/XF object count equation
  i40iw: Fix sequence number for the first partial FPDU
  drm/msm: Take the mutex before calling msm_gem_new_impl
  net: llc: add lock_sock in llc_ui_bind to avoid a race condition
  KVM: nVMX: Fix handling of lmsw instruction
  KVM: X86: Fix preempt the preemption timer cancel
  PCI/msi: fix the pci_alloc_irq_vectors_affinity stub
  cpuhotplug: Link lock stacks for hotplug callbacks
  bonding: Don't update slave->link until ready to commit
  Input: elan_i2c - clear INT before resetting controller
  net: move somaxconn init from sysctl code
  tcp: better validation of received ack sequences
  ARM64: PCI: Fix struct acpi_pci_root_ops allocation failure path
  ext4: fix off-by-one on max nr_pages in ext4_find_unwritten_pgoff()
  fix race in drivers/char/random.c:get_reg()
  scsi: bnx2fc: fix race condition in bnx2fc_get_host_stats()
  ASoC: rsnd: SSI PIO adjust to 24bit mode
  pNFS/flexfiles: missing error code in ff_layout_alloc_lseg()
  netfilter: ctnetlink: fix incorrect nf_ct_put during hash resize
  perf report: Fix off-by-one for non-activation frames
  libceph: NULL deref on crush_decode() error path
  net: ieee802154: fix net_device reference release too early
  mlx5: fix bug reading rss_hash_type from CQE
  block: fix an error code in add_partition()
  selinux: do not check open permission on sockets
  net/mlx5: Tolerate irq_set_affinity_hint() failures
  gpio: crystalcove: Do not write regular gpio registers for virtual GPIOs
  sched/numa: Use down_read_trylock() for the mmap_sem
  perf/core: Fix error handling in perf_event_alloc()
  leds: pca955x: Correct I2C Functionality
  net/wan/fsl_ucc_hdlc: fix muram allocation error
  ray_cs: Avoid reading past end of buffer
  ARM: davinci: da8xx: Create DSP device only when assigned memory
  md-cluster: fix potential lock issue in add_new_disk
  ext4: handle the rest of ext4_mb_load_buddy() ENOMEM errors
  iio: light: rpr0521 poweroff for probe fails
  iio: hi8435: cleanup reset gpio
  iio: hi8435: avoid garbage event at first enable
  ASoC: simple-card: fix mic jack initialization
  xfrm: fix state migration copy replay sequence numbers
  selftests/powerpc: Fix TM resched DSCR test with some compilers
  ath5k: fix memory leak on buf on failed eeprom read
  powerpc/mm: Fix virt_addr_valid() etc. on 64-bit hash
  scsi: csiostor: fix use after free in csio_hw_use_fwconfig()
  mlxsw: spectrum: Avoid possible NULL pointer dereference
  sh_eth: Use platform device for printing before register_netdev()
  fsl/qe: add bit description for SYNL register for GUMR
  net/wan/fsl_ucc_hdlc: fix incorrect memory allocation
  net/wan/fsl_ucc_hdlc: fix unitialized variable warnings
  serial: sh-sci: Fix race condition causing garbage during shutdown
  serial: 8250: omap: Disable DMA for console UART
  USB: ene_usb6250: fix SCSI residue overwriting
  net: x25: fix one potential use-after-free issue
  USB: ene_usb6250: fix first command execution
  pxa_camera: fix module remove codepath for v4l2 clock
  usb: chipidea: properly handle host or gadget initialization failure
  ARM: dts: rockchip: fix rk322x i2s1 pinctrl error
  arp: honour gratuitous ARP _replies_
  neighbour: update neigh timestamps iff update is effective
  uio: fix incorrect memory leak cleanup
  ipmr: vrf: Find VIFs using the actual device
  ata: libahci: properly propagate return value of platform_get_irq()
  btrfs: fix incorrect error return ret being passed to mapping_set_error
  usb: dwc3: keystone: check return value
  KVM: arm64: Restore host physical timer access on hyp_panic()
  KVM: arm: Restore banked registers and physical timer access on hyp_panic()
  async_tx: Fix DMA_PREP_FENCE usage in do_async_gen_syndrome()
  ipv6: avoid dad-failures for addresses with NODAD
  mdio: mux: fix device_node_continue.cocci warnings
  arm64: perf: Ignore exclude_hv when kernel is running in HYP
  i2c: mux: reg: put away the parent i2c adapter on probe failure
  ARM: dts: imx6qdl-wandboard: Fix audio channel swap
  powerpc/modules: If mprofile-kernel is enabled add it to vermagic
  x86/tsc: Provide 'tsc=unstable' boot parameter
  clk: renesas: rcar-gen2: Fix PLL0 on R-Car V2H and E2
  staging: wlan-ng: prism2mgmt.c: fixed a double endian conversion before calling hfa384x_drvr_setconfig16, also fixes relative sparse warning
  ARM: dts: imx53-qsrb: Pulldown PMIC IRQ pin
  iio: pressure: zpa2326: report interrupted case as failure
  PowerCap: Fix an error code in powercap_register_zone()
  bus: brcmstb_gisb: correct support for 64-bit address output
  bus: brcmstb_gisb: Use register offsets with writes too
  SMB2: Fix share type handling
  mm, vmstat: Remove spurious WARN() during zoneinfo print
  vmxnet3: ensure that adapter is in proper state during force_close
  irqchip/mbigen: Fix the clear register offset calculation
  KVM: PPC: Book3S PR: Check copy_to/from_user return values
  Input: elantech - force relative mode on a certain module
  Input: elan_i2c - check if device is there before really probing
  mdio: mux: Correct mdio_mux_init error path issues
  netxen_nic: set rcode to the return status from the call to netxen_issue_cmd
  net: qca_spi: Fix alignment issues in rx path
  blk-mq: NVMe 512B/4K+T10 DIF/DIX format returns I/O error on dd with split op
  perf/callchain: Force USER_DS when invoking perf_callchain_user()
  CIFS: silence lockdep splat in cifs_relock_file()
  NFSv4.1: Work around a Linux server bug...
  qed: Correct doorbell configuration for !4Kb pages
  net/mlx4_en: Avoid adding steering rules with invalid ring
  s390: move _text symbol to address higher than zero
  pidns: disable pid allocation if pid_ns_prepare_proc() is failed in alloc_pid()
  drivers/misc/vmw_vmci/vmci_queue_pair.c: fix a couple integer overflow tests
  lockd: fix lockd shutdown race
  net: ethernet: ti: cpsw: adjust cpsw fifos depth for fullduplex flow control
  net: cdc_ncm: Fix TX zero padding
  ipmi_ssif: unlock on allocation failure
  ubi: fastmap: Fix slab corruption
  qlge: Avoid reading past end of buffer
  bna: Avoid reading past end of buffer
  mac80211: bail out from prep_connection() if a reconfig is ongoing
  af_key: Fix slab-out-of-bounds in pfkey_compile_policy.
  IB/srpt: Avoid that aborting a command triggers a kernel warning
  IB/srpt: Fix abort handling
  x86/boot: Declare error() as noreturn
  NFSv4.1: RECLAIM_COMPLETE must handle NFS4ERR_CONN_NOT_BOUND_TO_SESSION
  ovl: persistent inode numbers for upper hardlinks
  x86/mm/kaslr: Use the _ASM_MUL macro for multiplication to work around Clang incompatibility
  x86/asm: Don't use RBP as a temporary register in csum_partial_copy_generic()
  rtc: snvs: fix an incorrect check of return value
  md/raid5: make use of spin_lock_irq over local_irq_disable + spin_lock
  cfg80211: make RATE_INFO_BW_20 the default
  qed: Fix overriding of supported autoneg value.
  ANDROID: proc: add null check in proc_uid_init
  f2fs/fscrypt: updates to v4.17-rc1
  Revert "ANDROID: sched/tune: Initialize raw_spin_lock in boosted_groups"
  ANDROID: uid_sys_stats: Replace tasklist lock with RCU in uid_cputime_show
  ANDROID: arm64: mark kpti_install_ng_mappings as __nocfi

Conflicts:
	arch/arm64/kernel/perf_event.c
	drivers/gpu/drm/msm/msm_gem.c
	drivers/hwtracing/coresight/coresight-tmc.c
	drivers/hwtracing/coresight/coresight.c

Change-Id: I3a1bd6216f55601cff0a2b4344c480b2e1a771a6
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
2018-05-11 03:07:46 -07:00
Vaibhav Jain
d5cbc16656 rtc: interface: Validate alarm-time before handling rollover
[ Upstream commit da96aea0ed177105cb13ee83b328f6c61e061d3f ]

In function __rtc_read_alarm() its possible for an alarm time-stamp to
be invalid even after replacing missing components with current
time-stamp. The condition 'alarm->time.tm_year < 70' will trigger this
case and will cause the call to 'rtc_tm_to_time64(&alarm->time)'
return a negative value for variable t_alm.

While handling alarm rollover this negative t_alm (assumed to seconds
offset from '1970-01-01 00:00:00') is converted back to rtc_time via
rtc_time64_to_tm() which results in this error log with seemingly
garbage values:

"rtc rtc0: invalid alarm value: -2-1--1041528741
2005511117:71582844:32"

This error was generated when the rtc driver (rtc-opal in this case)
returned an alarm time-stamp of '00-00-00 00:00:00' to indicate that
the alarm is disabled. Though I have submitted a separate fix for the
rtc-opal driver, this issue may potentially impact other
existing/future rtc drivers.

To fix this issue the patch validates the alarm time-stamp just after
filling up the missing datetime components and if rtc_valid_tm() still
reports it to be invalid then bails out of the function without
handling the rollover.

Reported-by: Steve Best <sbest@redhat.com>
Signed-off-by: Vaibhav Jain <vaibhav@linux.vnet.ibm.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-04-13 19:48:14 +02:00
Kyle Yan
ff97938fbf Merge remote-tracking branch '4.9/tmp-8dd0f52' into msm-4.9
* 4.9/tmp-8dd0f52:
  Linux 4.9.72
  sparc32: Export vac_cache_size to fix build error
  bpf: fix incorrect sign extension in check_alu_op()
  bpf: reject out-of-bounds stack pointer calculation
  bpf: fix branch pruning logic
  bpf: adjust insn_aux_data when patching insns
  Revert "Bluetooth: btusb: driver to enable the usb-wakeup feature"
  platform/x86: asus-wireless: send an EV_SYN/SYN_REPORT between state changes
  MIPS: math-emu: Fix final emulation phase for certain instructions
  thermal/drivers/hisi: Fix multiple alarm interrupts firing
  thermal/drivers/hisi: Simplify the temperature/step computation
  thermal/drivers/hisi: Fix kernel panic on alarm interrupt
  thermal/drivers/hisi: Fix missing interrupt enablement
  thermal: hisilicon: Handle return value of clk_prepare_enable
  cpuidle: fix broadcast control when broadcast can not be entered
  rtc: set the alarm to the next expiring timer
  tcp: fix under-evaluated ssthresh in TCP Vegas
  clk: sunxi-ng: sun6i: Rename HDMI DDC clock to avoid name collision
  staging: greybus: light: Release memory obtained by kasprintf
  net: ipv6: send NS for DAD when link operationally up
  fm10k: ensure we process SM mbx when processing VF mbx
  vfio/pci: Virtualize Maximum Payload Size
  scsi: lpfc: PLOGI failures during NPIV testing
  scsi: lpfc: Fix secure firmware updates
  fm10k: fix mis-ordered parameters in declaration for .ndo_set_vf_bw
  ASoC: img-parallel-out: Add pm_runtime_get/put to set_fmt callback
  tracing: Exclude 'generic fields' from histograms
  PCI/AER: Report non-fatal errors only to the affected endpoint
  IB/rxe: check for allocation failure on elem
  ixgbe: fix use of uninitialized padding
  igb: check memory allocation failure
  PM / OPP: Move error message to debug level
  PCI: Create SR-IOV virtfn/physfn links before attaching driver
  scsi: mpt3sas: Fix IO error occurs on pulling out a drive from RAID1 volume created on two SATA drive
  scsi: cxgb4i: fix Tx skb leak
  PCI: Avoid bus reset if bridge itself is broken
  net: phy: at803x: Change error to EINVAL for invalid MAC
  kvm, mm: account kvm related kmem slabs to kmemcg
  rtc: pl031: make interrupt optional
  crypto: crypto4xx - increase context and scatter ring buffer elements
  backlight: pwm_bl: Fix overflow condition
  bnxt_en: Fix NULL pointer dereference in reopen failure path
  cpuidle: powernv: Pass correct drv->cpumask for registration
  ARM: dma-mapping: disallow dma_get_sgtable() for non-kernel managed memory
  Btrfs: fix an integer overflow check
  netfilter: nfnetlink_queue: fix secctx memory leak
  xhci: plat: Register shutdown for xhci_plat
  net: moxa: fix TX overrun memory leak
  isdn: kcapi: avoid uninitialized data
  virtio_balloon: prevent uninitialized variable use
  virtio-balloon: use actual number of stats for stats queue buffers
  KVM: pci-assign: do not map smm memory slot pages in vt-d page tables
  net: ipconfig: fix ic_close_devs() use-after-free
  cpufreq: Fix creation of symbolic links to policy directories
  ARM: dts: am335x-evmsk: adjust mmc2 param to allow suspend
  netfilter: nf_nat_snmp: Fix panic when snmp_trap_helper fails to register
  netfilter: nfnl_cthelper: fix a race when walk the nf_ct_helper_hash table
  irda: vlsi_ir: fix check for DMA mapping errors
  RDMA/iser: Fix possible mr leak on device removal event
  i40e: Do not enable NAPI on q_vectors that have no rings
  IB/rxe: increment msn only when completing a request
  IB/rxe: double free on error
  net: Do not allow negative values for busy_read and busy_poll sysctl interfaces
  nbd: set queue timeout properly
  infiniband: Fix alignment of mmap cookies to support VIPT caching
  IB/core: Protect against self-requeue of a cq work item
  i40iw: Receive netdev events post INET_NOTIFIER state
  bna: avoid writing uninitialized data into hw registers
  s390/qeth: no ETH header for outbound AF_IUCV
  s390/qeth: size calculation outbound buffers
  r8152: prevent the driver from transmitting packets with carrier off
  ASoC: STI: Fix reader substream pointer set
  HID: xinmo: fix for out of range for THT 2P arcade controller.
  hwmon: (asus_atk0110) fix uninitialized data access
  ARM: dts: ti: fix PCI bus dtc warnings
  KVM: VMX: Fix enable VPID conditions
  KVM: x86: correct async page present tracepoint
  kvm: vmx: Flush TLB when the APIC-access address changes
  scsi: lpfc: Fix PT2PT PRLI reject
  pinctrl: st: add irq_request/release_resources callbacks
  inet: frag: release spinlock before calling icmp_send()
  tipc: fix nametbl deadlock at tipc_nametbl_unsubscribe
  r8152: fix the rx early size of RTL8153
  iommu/exynos: Workaround FLPD cache flush issues for SYSMMU v5
  netfilter: nfnl_cthelper: Fix memory leak
  netfilter: nfnl_cthelper: fix runtime expectation policy updates
  usb: gadget: udc: remove pointer dereference after free
  usb: gadget: f_uvc: Sanity check wMaxPacketSize for SuperSpeed
  hwmon: (max31790) Set correct PWM value
  net: qmi_wwan: Add USB IDs for MDM6600 modem on Motorola Droid 4
  sctp: out_qlen should be updated when pruning unsent queue
  bna: integer overflow bug in debugfs
  sch_dsmark: fix invalid skb_cow() usage
  vsock: cancel packets when failing to connect
  vhost-vsock: add pkt cancel capability
  vsock: track pkt owner vsock
  crypto: deadlock between crypto_alg_sem/rtnl_mutex/genl_mutex
  r8152: fix the list rx_done may be used without initialization
  cpuidle: Validate cpu_dev in cpuidle_add_sysfs()
  nvme-loop: handle cpu unplug when re-establishing the controller
  arm: kprobes: Align stack to 8-bytes in test code
  arm: kprobes: Fix the return address of multiple kretprobes
  HID: corsair: Add driver Scimitar Pro RGB gaming mouse 1b1c:1b3e support to hid-corsair
  HID: corsair: support for K65-K70 Rapidfire and Scimitar Pro RGB
  kvm: fix usage of uninit spinlock in avic_vm_destroy()
  ALSA: hda - add support for docking station for HP 840 G3
  ALSA: hda - add support for docking station for HP 820 G2
  arm64: Initialise high_memory global variable earlier
  cxl: Check if vphb exists before iterating over AFU devices
  Linux 4.9.71
  ath9k: fix tx99 potential info leak
  icmp: don't fail on fragment reassembly time exceeded
  IB/ipoib: Grab rtnl lock on heavy flush when calling ndo_open/stop
  RDMA/cma: Avoid triggering undefined behavior
  macvlan: Only deliver one copy of the frame to the macvlan interface
  udf: Avoid overflow when session starts at large offset
  scsi: bfa: integer overflow in debugfs
  scsi: sd: change allow_restart to bool in sysfs interface
  scsi: sd: change manage_start_stop to bool in sysfs interface
  rtl8188eu: Fix a possible sleep-in-atomic bug in rtw_disassoc_cmd
  rtl8188eu: Fix a possible sleep-in-atomic bug in rtw_createbss_cmd
  vt6655: Fix a possible sleep-in-atomic bug in vt6655_suspend
  IB/core: Fix calculation of maximum RoCE MTU
  scsi: scsi_devinfo: Add REPORTLUN2 to EMC SYMMETRIX blacklist entry
  raid5: Set R5_Expanded on parity devices as well as data.
  pinctrl: adi2: Fix Kconfig build problem
  usb: musb: da8xx: fix babble condition handling
  tty fix oops when rmmod 8250
  soc: mediatek: pwrap: fix compiler errors
  powerpc/perf/hv-24x7: Fix incorrect comparison in memord
  scsi: hpsa: destroy sas transport properties before scsi_host
  scsi: hpsa: cleanup sas_phy structures in sysfs when unloading
  PCI: Detach driver before procfs & sysfs teardown on device remove
  RDMA/cxgb4: Declare stag as __be32
  xfs: fix incorrect extent state in xfs_bmap_add_extent_unwritten_real
  xfs: fix log block underflow during recovery cycle verification
  l2tp: cleanup l2tp_tunnel_delete calls
  nvme: use kref_get_unless_zero in nvme_find_get_ns
  platform/x86: hp_accel: Add quirk for HP ProBook 440 G4
  btrfs: tests: Fix a memory leak in error handling path in 'run_test()'
  arm64: prevent regressions in compressed kernel image size when upgrading to binutils 2.27
  Ib/hfi1: Return actual operational VLs in port info query
  bcache: fix wrong cache_misses statistics
  bcache: explicitly destroy mutex while exiting
  GFS2: Take inode off order_write list when setting jdata flag
  scsi: scsi_debug: write_same: fix error report
  thermal/drivers/step_wise: Fix temperature regulation misbehavior
  ASoC: rsnd: rsnd_ssi_run_mods() needs to care ssi_parent_mod
  ppp: Destroy the mutex when cleanup
  clk: tegra: Fix cclk_lp divisor register
  clk: hi6220: mark clock cs_atb_syspll as critical
  clk: imx6: refine hdmi_isfr's parent to make HDMI work on i.MX6 SoCs w/o VPU
  clk: mediatek: add the option for determining PLL source clock
  mm: Handle 0 flags in _calc_vm_trans() macro
  crypto: tcrypt - fix buffer lengths in test_aead_speed()
  arm-ccn: perf: Prevent module unload while PMU is in use
  xfs: truncate pagecache before writeback in xfs_setattr_size()
  iommu/amd: Limit the IOVA page range to the specified addresses
  badblocks: fix wrong return value in badblocks_set if badblocks are disabled
  target/file: Do not return error for UNMAP if length is zero
  target:fix condition return in core_pr_dump_initiator_port()
  iscsi-target: fix memory leak in lio_target_tiqn_addtpg()
  target/iscsi: Fix a race condition in iscsit_add_reject_from_cmd()
  platform/x86: intel_punit_ipc: Fix resource ioremap warning
  powerpc/ipic: Fix status get and status clear
  powerpc/opal: Fix EBUSY bug in acquiring tokens
  netfilter: ipvs: Fix inappropriate output of procfs
  iommu/mediatek: Fix driver name
  PCI: Do not allocate more buses than available in parent
  powerpc/powernv/cpufreq: Fix the frequency read by /proc/cpuinfo
  PCI/PME: Handle invalid data when reading Root Status
  dmaengine: ti-dma-crossbar: Correct am335x/am43xx mux value type
  ASoC: Intel: Skylake: Fix uuid_module memory leak in failure case
  rtc: pcf8563: fix output clock rate
  video: fbdev: au1200fb: Return an error code if a memory allocation fails
  video: fbdev: au1200fb: Release some resources if a memory allocation fails
  video: udlfb: Fix read EDID timeout
  fbdev: controlfb: Add missing modes to fix out of bounds access
  sfc: don't warn on successful change of MAC
  HID: cp2112: fix broken gpio_direction_input callback
  Revert "x86/acpi: Set persistent cpuid <-> nodeid mapping when booting"
  target: fix race during implicit transition work flushes
  target: fix ALUA transition timeout handling
  target: Use system workqueue for ALUA transitions
  btrfs: add missing memset while reading compressed inline extents
  NFSv4.1 respect server's max size in CREATE_SESSION
  efi/esrt: Cleanup bad memory map log messages
  perf symbols: Fix symbols__fixup_end heuristic for corner cases
  tty: fix data race in tty_ldisc_ref_wait()
  tty: don't panic on OOM in tty_set_ldisc()
  rxrpc: Ignore BUSY packets on old calls
  net: mpls: Fix nexthop alive tracking on down events
  net/mlx4_core: Avoid delays during VF driver device shutdown
  nvmet-rdma: Fix a possible uninitialized variable dereference
  nvmet: confirm sq percpu has scheduled and switched to atomic
  nvme-loop: fix a possible use-after-free when destroying the admin queue
  afs: Fix abort on signal while waiting for call completion
  afs: Fix afs_kill_pages()
  afs: Fix page leak in afs_write_begin()
  afs: Populate and use client modification time
  afs: Better abort and net error handling
  afs: Invalid op ID should abort with RXGEN_OPCODE
  afs: Fix the maths in afs_fs_store_data()
  afs: Prevent callback expiry timer overflow
  afs: Migrate vlocation fields to 64-bit
  afs: Flush outstanding writes when an fd is closed
  afs: Deal with an empty callback array
  afs: Adjust mode bits processing
  afs: Populate group ID from vnode status
  afs: Fix missing put_page()
  drm/radeon: reinstate oland workaround for sclk
  mmc: mediatek: Fixed bug where clock frequency could be set wrong
  sched/deadline: Use deadline instead of period when calculating overflow
  sched/deadline: Throttle a constrained deadline task activated after the deadline
  sched/deadline: Make sure the replenishment timer fires in the next period
  sched/deadline: Add missing update_rq_clock() in dl_task_timer()
  iwlwifi: mvm: cleanup pending frames in DQA mode
  Drivers: hv: util: move waiting for release to hv_utils_transport itself
  drm/radeon/si: add dpm quirk for Oland
  fjes: Fix wrong netdevice feature flags
  scsi: hpsa: do not timeout reset operations
  scsi: hpsa: limit outstanding rescans
  scsi: hpsa: update check for logical volume status
  ASoC: rcar: clear DE bit only in PDMACHCR when it stops
  openrisc: fix issue handling 8 byte get_user calls
  intel_th: pci: Add Gemini Lake support
  drm: amd: remove broken include path
  qed: Fix interrupt flags on Rx LL2
  qed: Fix mapping leak on LL2 rx flow
  qed: Align CIDs according to DORQ requirement
  mlxsw: reg: Fix SPVMLR max record count
  mlxsw: reg: Fix SPVM max record count
  net: Resend IGMP memberships upon peer notification.
  irqchip/mvebu-odmi: Select GENERIC_MSI_IRQ_DOMAIN
  dmaengine: Fix array index out of bounds warning in __get_unmap_pool()
  net: wimax/i2400m: fix NULL-deref at probe
  writeback: fix memory leak in wb_queue_work()
  blk-mq: Fix tagset reinit in the presence of cpu hot-unplug
  ASoC: rsnd: fix sound route path when using SRC6/SRC9
  netfilter: bridge: honor frag_max_size when refragmenting
  drm/omap: fix dmabuf mmap for dma_alloc'ed buffers
  Input: i8042 - add TUXEDO BU1406 (N24_25BU) to the nomux list
  NFSD: fix nfsd_reset_versions for NFSv4.
  NFSD: fix nfsd_minorversion(.., NFSD_AVAIL)
  drm/amdgpu: fix parser init error path to avoid crash in parser fini
  iommu/io-pgtable-arm-v7s: Check for leaf entry before dereferencing it
  net/mlx5: Don't save PCI state when PCI error is detected
  net/mlx5: Fix create autogroup prev initializer
  rxrpc: Wake up the transmitter if Rx window size increases on the peer
  net: bcmgenet: Power up the internal PHY before probing the MII
  net: bcmgenet: synchronize irq0 status between the isr and task
  net: bcmgenet: power down internal phy if open or resume fails
  net: bcmgenet: reserved phy revisions must be checked first
  net: bcmgenet: correct MIB access of UniMAC RUNT counters
  net: bcmgenet: correct the RBUF_OVFL_CNT and RBUF_ERR_CNT MIB values
  bnxt_en: Ignore 0 value in autoneg supported speed from firmware.
  net: initialize msg.msg_flags in recvfrom
  userfaultfd: selftest: vm: allow to build in vm/ directory
  userfaultfd: shmem: __do_fault requires VM_FAULT_NOPAGE
  md-cluster: free md_cluster_info if node leave cluster
  usb: xhci-mtk: check hcc_params after adding primary hcd
  KVM: nVMX: do not warn when MSR bitmap address is not backed
  usb: phy: isp1301: Add OF device ID table
  mac80211: Fix addition of mesh configuration element
  ext4: fix crash when a directory's i_size is too small
  ext4: fix fdatasync(2) after fallocate(2) operation
  dmaengine: dmatest: move callback wait queue to thread context
  eeprom: at24: change nvmem stride to 1
  sched/rt: Do not pull from current CPU if only one CPU to pull
  nfs: don't wait on commit in nfs_commit_inode() if there were no commit requests
  xhci: Don't add a virt_dev to the devs array before it's fully allocated
  Bluetooth: btusb: driver to enable the usb-wakeup feature
  usb: xhci: fix TDS for MTK xHCI1.1
  ceph: drop negative child dentries before try pruning inode's alias
  usbip: fix stub_send_ret_submit() vulnerability to null transfer_buffer
  usbip: fix stub_rx: harden CMD_SUBMIT path to handle malicious input
  usb: add helper to extract bits 12:11 of wMaxPacketSize
  usbip: fix stub_rx: get_pipe() to validate endpoint number
  USB: core: prevent malicious bNumInterfaces overflow
  USB: uas and storage: Add US_FL_BROKEN_FUA for another JMicron JMS567 ID
  tracing: Allocate mask_str buffer dynamically
  autofs: fix careless error in recent commit
  crypto: salsa20 - fix blkcipher_walk API usage
  crypto: hmac - require that the underlying hash algorithm is unkeyed
  crypto: rsa - fix buffer overread when stripping leading zeroes
  mfd: fsl-imx25: Clean up irq settings during removal
  Linux 4.9.70
  RDMA/cxgb4: Annotate r2 and stag as __be32
  md: free unused memory after bitmap resize
  audit: ensure that 'audit=1' actually enables audit for PID 1
  ipvlan: fix ipv6 outbound device
  kbuild: do not call cc-option before KBUILD_CFLAGS initialization
  powerpc/64: Fix checksum folding in csum_tcpudp_nofold and ip_fast_csum_nofold
  KVM: arm/arm64: vgic-its: Preserve the revious read from the pending table
  fix kcm_clone()
  usb: gadget: ffs: Forbid usb_ep_alloc_request from sleeping
  s390: always save and restore all registers on context switch
  ipmi: Stop timers before cleaning up the module
  Fix handling of verdicts after NF_QUEUE
  tipc: call tipc_rcv() only if bearer is up in tipc_udp_recv()
  s390/qeth: fix thinko in IPv4 multicast address tracking
  s390/qeth: fix GSO throughput regression
  s390/qeth: build max size GSO skbs on L2 devices
  tcp/dccp: block bh before arming time_wait timer
  stmmac: reset last TSO segment size after device open
  net: remove hlist_nulls_add_tail_rcu()
  usbnet: fix alignment for frames with no ethernet header
  net/packet: fix a race in packet_bind() and packet_notifier()
  packet: fix crash in fanout_demux_rollover()
  sit: update frag_off info
  rds: Fix NULL pointer dereference in __rds_rdma_map
  tipc: fix memory leak in tipc_accept_from_sock()
  s390/qeth: fix early exit from error path
  net: qmi_wwan: add Quectel BG96 2c7c:0296
  ANDROID: dma-buf/sw_sync: Rename active_list to link
  FROMLIST: android: binder: Fix null ptr dereference in debug msg
  FROMLIST: android: binder: Move buffer out of area shared with user space
  FROMLIST: android: binder: Add allocator selftest
  FROMLIST: android: binder: Refactor prev and next buffer into a helper function
  Linux 4.9.69
  afs: Connect up the CB.ProbeUuid
  IB/mlx5: Assign send CQ and recv CQ of UMR QP
  IB/mlx4: Increase maximal message size under UD QP
  xfrm: Copy policy family in clone_policy
  jump_label: Invoke jump_label_test() via early_initcall()
  atm: horizon: Fix irq release error
  clk: uniphier: fix DAPLL2 clock rate of Pro5
  bpf: fix lockdep splat
  sctp: use the right sk after waking up from wait_buf sleep
  sctp: do not free asoc when it is already dead in sctp_sendmsg
  zsmalloc: calling zs_map_object() from irq is a bug
  sparc64/mm: set fields in deferred pages
  block: wake up all tasks blocked in get_request()
  dt-bindings: usb: fix reg-property port-number range
  xfs: fix forgotten rcu read unlock when skipping inode reclaim
  sunrpc: Fix rpc_task_begin trace point
  NFS: Fix a typo in nfs_rename()
  dynamic-debug-howto: fix optional/omitted ending line number to be LARGE instead of 0
  lib/genalloc.c: make the avail variable an atomic_long_t
  drivers/rapidio/devices/rio_mport_cdev.c: fix resource leak in error handling path in 'rio_dma_transfer()'
  route: update fnhe_expires for redirect when the fnhe exists
  route: also update fnhe_genid when updating a route cache
  gre6: use log_ecn_error module parameter in ip6_tnl_rcv()
  mac80211_hwsim: Fix memory leak in hwsim_new_radio_nl()
  x86/mpx/selftests: Fix up weird arrays
  coccinelle: fix parallel build with CHECK=scripts/coccicheck
  kbuild: pkg: use --transform option to prefix paths in tar
  EDAC, i5000, i5400: Fix definition of NRECMEMB register
  EDAC, i5000, i5400: Fix use of MTR_DRAM_WIDTH macro
  powerpc/powernv/ioda2: Gracefully fail if too many TCE levels requested
  drm/amd/amdgpu: fix console deadlock if late init failed
  axonram: Fix gendisk handling
  netfilter: don't track fragmented packets
  zram: set physical queue limits to avoid array out of bounds accesses
  blk-mq: initialize mq kobjects in blk_mq_init_allocated_queue()
  i2c: riic: fix restart condition
  crypto: s5p-sss - Fix completing crypto request in IRQ handler
  ipv6: reorder icmpv6_init() and ip6_mr_init()
  ibmvnic: Allocate number of rx/tx buffers agreed on by firmware
  ibmvnic: Fix overflowing firmware/hardware TX queue
  rds: tcp: Sequence teardown of listen and acceptor sockets to avoid races
  bnx2x: do not rollback VF MAC/VLAN filters we did not configure
  bnx2x: fix detection of VLAN filtering feature for VF
  bnx2x: fix possible overrun of VFPF multicast addresses array
  bnx2x: prevent crash when accessing PTP with interface down
  spi_ks8995: regs_size incorrect for some devices
  spi_ks8995: fix "BUG: key accdaa28 not in .data!"
  KVM: arm/arm64: VGIC: Fix command handling while ITS being disabled
  arm64: KVM: Survive unknown traps from guests
  arm: KVM: Survive unknown traps from guests
  KVM: nVMX: reset nested_run_pending if the vCPU is going to be reset
  irqchip/crossbar: Fix incorrect type of register size
  scsi: lpfc: Fix crash during Hardware error recovery on SLI3 adapters
  scsi: qla2xxx: Fix ql_dump_buffer
  workqueue: trigger WARN if queue_delayed_work() is called with NULL @wq
  libata: drop WARN from protocol error in ata_sff_qc_issue()
  kvm: nVMX: VMCLEAR should not cause the vCPU to shut down
  usb: gadget: udc: net2280: Fix tmp reusage in net2280 driver
  usb: gadget: pxa27x: Test for a valid argument pointer
  usb: dwc3: gadget: Fix system suspend/resume on TI platforms
  USB: gadgetfs: Fix a potential memory leak in 'dev_config()'
  usb: gadget: configs: plug memory leak
  HID: chicony: Add support for another ASUS Zen AiO keyboard
  gpio: altera: Use handle_level_irq when configured as a level_high
  ASoC: rcar: avoid SSI_MODEx settings for SSI8
  ARM: OMAP2+: Release device node after it is no longer needed.
  ARM: OMAP2+: Fix device node reference counts
  powerpc/64: Fix checksum folding in csum_add()
  module: set __jump_table alignment to 8
  lirc: fix dead lock between open and wakeup_filter
  powerpc: Fix compiling a BE kernel with a powerpc64le toolchain
  selftest/powerpc: Fix false failures for skipped tests
  powerpc/64: Invalidate process table caching after setting process table
  x86/hpet: Prevent might sleep splat on resume
  sched/fair: Make select_idle_cpu() more aggressive
  x86/platform/uv/BAU: Fix HUB errors by remove initial write to sw-ack register
  x86/selftests: Add clobbers for int80 on x86_64
  ARM: OMAP2+: gpmc-onenand: propagate error on initialization failure
  vti6: Don't report path MTU below IPV6_MIN_MTU.
  ARM: 8657/1: uaccess: consistently check object sizes
  Revert "spi: SPI_FSL_DSPI should depend on HAS_DMA"
  Revert "drm/armada: Fix compile fail"
  mm: drop unused pmdp_huge_get_and_clear_notify()
  thp: fix MADV_DONTNEED vs. numa balancing race
  thp: reduce indentation level in change_huge_pmd()
  ARM: avoid faulting on qemu
  ARM: BUG if jumping to usermode address in kernel mode
  usb: f_fs: Force Reserved1=1 in OS_DESC_EXT_COMPAT
  crypto: talitos - fix ctr-aes-talitos
  crypto: talitos - fix use of sg_link_tbl_len
  crypto: talitos - fix AEAD for sha224 on non sha224 capable chips
  crypto: talitos - fix setkey to check key weakness
  crypto: talitos - fix memory corruption on SEC2
  crypto: talitos - fix AEAD test failures
  bus: arm-ccn: fix module unloading Error: Removing state 147 which has instances left.
  bus: arm-ccn: Fix use of smp_processor_id() in preemptible context
  bus: arm-ccn: Check memory allocation failure
  bus: arm-cci: Fix use of smp_processor_id() in preemptible context
  arm64: fpsimd: Prevent registers leaking from dead tasks
  KVM: arm/arm64: vgic-its: Check result of allocation before use
  KVM: arm/arm64: vgic-irqfd: Fix MSI entry allocation
  KVM: arm/arm64: Fix broken GICH_ELRSR big endian conversion
  KVM: VMX: remove I/O port 0x80 bypass on Intel hosts
  arm: KVM: Fix VTTBR_BADDR_MASK BUG_ON off-by-one
  arm64: KVM: fix VTTBR_BADDR_MASK BUG_ON off-by-one
  media: dvb: i2c transfers over usb cannot be done from stack
  drm/exynos: gem: Drop NONCONTIG flag for buffers allocated without IOMMU
  kdb: Fix handling of kallsyms_symbol_next() return value
  brcmfmac: change driver unbind order of the sdio function devices
  powerpc/64s: Initialize ISAv3 MMU registers before setting partition table
  KVM: s390: Fix skey emulation permission check
  s390: fix compat system call table
  smp/hotplug: Move step CPUHP_AP_SMPCFD_DYING to the correct place
  iommu/vt-d: Fix scatterlist offset handling
  ALSA: usb-audio: Add check return value for usb_string()
  ALSA: usb-audio: Fix out-of-bound error
  ALSA: seq: Remove spurious WARN_ON() at timer check
  ALSA: pcm: prevent UAF in snd_pcm_info
  btrfs: fix missing error return in btrfs_drop_snapshot
  KVM: x86: fix APIC page invalidation
  x86/PCI: Make broadcom_postcore_init() check acpi_disabled
  X.509: fix comparisons of ->pkey_algo
  X.509: reject invalid BIT STRING for subjectPublicKey
  KEYS: add missing permission check for request_key() destination
  ASN.1: check for error from ASN1_OP_END__ACT actions
  ASN.1: fix out-of-bounds read when parsing indefinite length item
  efi/esrt: Use memunmap() instead of kfree() to free the remapping
  efi: Move some sysfs files to be read-only by root
  scsi: libsas: align sata_device's rps_resp on a cacheline
  scsi: use dma_get_cache_alignment() as minimum DMA alignment
  scsi: dma-mapping: always provide dma_get_cache_alignment
  isa: Prevent NULL dereference in isa_bus driver callbacks
  hv: kvp: Avoid reading past allocated blocks from KVP file
  virtio: release virtio index when fail to device_register
  can: usb_8dev: cancel urb on -EPIPE and -EPROTO
  can: esd_usb2: cancel urb on -EPIPE and -EPROTO
  can: ems_usb: cancel urb on -EPIPE and -EPROTO
  can: kvaser_usb: cancel urb on -EPIPE and -EPROTO
  can: kvaser_usb: ratelimit errors if incomplete messages are received
  can: kvaser_usb: Fix comparison bug in kvaser_usb_read_bulk_callback()
  can: kvaser_usb: free buf in error paths
  can: ti_hecc: Fix napi poll return value for repoll
  usb: gadget: udc: renesas_usb3: fix number of the pipes
  ANDROID: Revert "arm64: move ELF_ET_DYN_BASE to 4GB / 4MB"
  ANDROID: Revert "arm: move ELF_ET_DYN_BASE to 4MB"
  Linux 4.9.68
  xen-netfront: avoid crashing on resume after a failure in talk_to_netback()
  usb: host: fix incorrect updating of offset
  USB: usbfs: Filter flags passed in from user space
  USB: devio: Prevent integer overflow in proc_do_submiturb()
  USB: Increase usbfs transfer limit
  USB: core: Add type-specific length check of BOS descriptors
  usb: xhci: fix panic in xhci_free_virt_devices_depth_first
  usb: hub: Cycle HUB power when initialization fails
  dma-buf: Update kerneldoc for sync_file_create
  dma-buf/sync_file: hold reference to fence when creating sync_file
  dma-buf/sw_sync: force signal all unsignaled fences on dying timeline
  dma-fence: Introduce drm_fence_set_error() helper
  dma-fence: Wrap querying the fence->status
  dma-fence: Clear fence->status during dma_fence_init()
  dma-buf/sw_sync: clean up list before signaling the fence
  dma-buf/sw_sync: move timeline_fence_ops around
  dma-buf/sw-sync: Use an rbtree to sort fences in the timeline
  dma-buf/sw-sync: Fix locking around sync_timeline lists
  dma-buf/sw-sync: sync_pt is private and of fixed size
  dma-buf/sw-sync: Reduce irqsave/irqrestore from known context
  dma-buf/sw-sync: Prevent user overflow on timeline advance
  dma-buf/sw-sync: Fix the is-signaled test to handle u32 wraparound
  dma-buf/dma-fence: Extract __dma_fence_is_later()
  net: fec: fix multicast filtering hardware setup
  xen-netback: vif counters from int/long to u64
  cec: initiator should be the same as the destination for, poll
  xen-netfront: Improve error handling during initialization
  mm: avoid returning VM_FAULT_RETRY from ->page_mkwrite handlers
  vfio/spapr: Fix missing mutex unlock when creating a window
  be2net: fix initial MAC setting
  net: thunderx: avoid dereferencing xcv when NULL
  net: phy: micrel: KSZ8795 do not set SUPPORTED_[Asym_]Pause
  gtp: fix cross netns recv on gtp socket
  gtp: clear DF bit on GTP packet tx
  nvmet: cancel fatal error and flush async work before free controller
  i2c: i2c-cadence: Initialize configuration before probing devices
  tcp: correct memory barrier usage in tcp_check_space()
  dmaengine: pl330: fix double lock
  tipc: fix cleanup at module unload
  tipc: fix nametbl_lock soft lockup at module exit
  RDMA/qedr: Fix RDMA CM loopback
  RDMA/qedr: Return success when not changing QP state
  mac80211: don't try to sleep in rate_control_rate_init()
  drm/amdgpu: fix unload driver issue for virtual display
  x86/fpu: Set the xcomp_bv when we fake up a XSAVES area
  net: sctp: fix array overrun read on sctp_timer_tbl
  drm/exynos/decon5433: set STANDALONE_UPDATE_F on output enablement
  drm/amdgpu: fix bug set incorrect value to vce register
  qla2xxx: Fix wrong IOCB type assumption
  powerpc/mm: Fix memory hotplug BUG() on radix
  perf/x86/intel: Account interrupts for PEBS errors
  NFSv4: Fix client recovery when server reboots multiple times
  mac80211: prevent skb/txq mismatch
  KVM: arm/arm64: Fix occasional warning from the timer work function
  drm/exynos/decon5433: set STANDALONE_UPDATE_F also if planes are disabled
  drm/exynos/decon5433: update shadow registers iff there are active windows
  nfs: Don't take a reference on fl->fl_file for LOCK operation
  ravb: Remove Rx overflow log messages
  mac80211: calculate min channel width correctly
  mm: fix remote numa hits statistics
  net: qrtr: Mark 'buf' as little endian
  libfs: Modify mount_pseudo_xattr to be clear it is not a userspace mount
  net/appletalk: Fix kernel memory disclosure
  be2net: fix unicast list filling
  be2net: fix accesses to unicast list
  vti6: fix device register to report IFLA_INFO_KIND
  ARM: OMAP1: DMA: Correct the number of logical channels
  ARM: OMAP2+: Fix WL1283 Bluetooth Baud Rate
  net: systemport: Pad packet before inserting TSB
  net: systemport: Utilize skb_put_padto()
  libcxgb: fix error check for ip6_route_output()
  usb: gadget: f_fs: Fix ExtCompat descriptor validation
  dmaengine: stm32-dma: Fix null pointer dereference in stm32_dma_tx_status
  dmaengine: stm32-dma: Set correct args number for DMA request from DT
  l2tp: take remote address into account in l2tp_ip and l2tp_ip6 socket lookups
  net/mlx4_en: Fix type mismatch for 32-bit systems
  dax: Avoid page invalidation races and unnecessary radix tree traversals
  iio: adc: ti-ads1015: add 10% to conversion wait time
  tools include: Do not use poison with C++
  kprobes/x86: Disable preemption in ftrace-based jprobes
  perf test attr: Fix ignored test case result
  usbip: tools: Install all headers needed for libusbip development
  sysrq : fix Show Regs call trace on ARM
  EDAC, sb_edac: Fix missing break in switch
  x86/entry: Use SYSCALL_DEFINE() macros for sys_modify_ldt()
  serial: 8250: Preserve DLD[7:4] for PORT_XR17V35X
  usb: phy: tahvo: fix error handling in tahvo_usb_probe()
  mmc: sdhci-msm: fix issue with power irq
  spi: spi-axi: fix potential use-after-free after deregistration
  spi: sh-msiof: Fix DMA transfer size check
  staging: rtl8188eu: avoid a null dereference on pmlmepriv
  serial: 8250_fintek: Fix rs485 disablement on invalid ioctl()
  m68k: fix ColdFire node shift size calculation
  staging: greybus: loopback: Fix iteration count on async path
  selftests/x86/ldt_get: Add a few additional tests for limits
  s390/pci: do not require AIS facility
  ima: fix hash algorithm initialization
  USB: serial: option: add Quectel BG96 id
  s390/runtime instrumentation: simplify task exit handling
  serial: 8250_pci: Add Amazon PCI serial device ID
  usb: quirks: Add no-lpm quirk for KY-688 USB 3.1 Type-C Hub
  uas: Always apply US_FL_NO_ATA_1X quirk to Seagate devices
  mm, oom_reaper: gather each vma to prevent leaking TLB entry
  Revert "crypto: caam - get rid of tasklet"
  drm/fsl-dcu: enable IRQ before drm_atomic_helper_resume()
  drm/fsl-dcu: avoid disabling pixel clock twice on suspend
  bcache: recover data from backing when data is clean
  bcache: only permit to recovery read error when cache device is clean
  Linux 4.9.67
  drm/i915: Prevent zero length "index" write
  drm/i915: Don't try indexed reads to alternate slave addresses
  NFS: revalidate "." etc correctly on "open".
  Revert "x86/entry/64: Add missing irqflags tracing to native_load_gs_index()"
  drm/amd/pp: fix typecast error in powerplay.
  drm/ttm: once more fix ttm_buffer_object_transfer
  drm/hisilicon: Ensure LDI regs are properly configured.
  drm/panel: simple: Add missing panel_simple_unprepare() calls
  drm/radeon: fix atombios on big endian
  drm/amdgpu: Potential uninitialized variable in amdgpu_vm_update_directories()
  drm/amdgpu: potential uninitialized variable in amdgpu_vce_ring_parse_cs()
  Revert "drm/radeon: dont switch vt on suspend"
  nvme-pci: add quirk for delay before CHK RDY for WDC SN200
  hwmon: (jc42) optionally try to disable the SMBUS timeout
  bcache: Fix building error on MIPS
  i2c: i801: Fix Failed to allocate irq -2147483648 error
  eeprom: at24: check at24_read/write arguments
  eeprom: at24: correctly set the size for at24mac402
  eeprom: at24: fix reading from 24MAC402/24MAC602
  mmc: core: prepend 0x to OCR entry in sysfs
  mmc: core: Do not leave the block driver in a suspended state
  KVM: lapic: Fixup LDR on load in x2apic
  KVM: lapic: Split out x2apic ldr calculation
  KVM: x86: inject exceptions produced by x86_decode_insn
  KVM: x86: Exit to user-mode on #UD intercept when emulator requires
  KVM: x86: pvclock: Handle first-time write to pvclock-page contains random junk
  ARM: OMAP2+: Fix WL1283 Bluetooth Baud Rate
  mfd: twl4030-power: Fix pmic for boards that need vmmc1 on reboot
  nfsd: fix panic in posix_unblock_lock called from nfs4_laundromat
  nfsd: Fix another OPEN stateid race
  nfsd: Fix stateid races between OPEN and CLOSE
  btrfs: clear space cache inode generation always
  mm/madvise.c: fix madvise() infinite loop under special circumstances
  mm, hugetlbfs: introduce ->split() to vm_operations_struct
  mm/cma: fix alloc_contig_range ret code/potential leak
  mm, thp: Do not make page table dirty unconditionally in touch_p[mu]d()
  ARM: dts: omap3: logicpd-torpedo-37xx-devkit: Fix MMC1 cd-gpio
  ARM: dts: LogicPD Torpedo: Fix camera pin mux
  Linux 4.9.66
  xen: xenbus driver must not accept invalid transaction ids
  nvmet: fix KATO offset in Set Features
  cec: update log_addr[] before finishing configuration
  cec: CEC_MSG_GIVE_FEATURES should abort for CEC version < 2
  cec: when canceling a message, don't overwrite old status info
  s390/kbuild: enable modversions for symbols exported from asm
  ASoC: wm_adsp: Don't overrun firmware file buffer when reading region data
  btrfs: return the actual error value from from btrfs_uuid_tree_iterate
  crypto: marvell - Copy IVDIG before launching partial DMA ahash requests
  ASoC: rsnd: don't double free kctrl
  netfilter: nf_tables: fix oob access
  netfilter: nft_queue: use raw_smp_processor_id()
  spi: SPI_FSL_DSPI should depend on HAS_DMA
  staging: iio: cdc: fix improper return value
  iio: light: fix improper return value
  adm80211: add checks for dma mapping errors
  mac80211: Suppress NEW_PEER_CANDIDATE event if no room
  mac80211: Remove invalid flag operations in mesh TSF synchronization
  drm/mediatek: don't use drm_put_dev
  clk: qcom: ipq4019: Add all the frequencies for apss cpu
  drm: Apply range restriction after color adjustment when allocation
  gpio: mockup: dynamically allocate memory for chip name
  ALSA: hda - Apply ALC269_FIXUP_NO_SHUTUP on HDA_FIXUP_ACT_PROBE
  ath10k: set CTS protection VDEV param only if VDEV is up
  bnxt_en: Set default completion ring for async events.
  pinctrl: sirf: atlas7: Add missing 'of_node_put()'
  ath10k: fix potential memory leak in ath10k_wmi_tlv_op_pull_fw_stats()
  ath10k: ignore configuring the incorrect board_id
  ath10k: fix incorrect txpower set by P2P_DEVICE interface
  mwifiex: sdio: fix use after free issue for save_adapter
  adm80211: return an error if adm8211_alloc_rings() fails
  rt2800: set minimum MPDU and PSDU lengths to sane values
  drm/armada: Fix compile fail
  net: 3com: typhoon: typhoon_init_one: fix incorrect return values
  net: 3com: typhoon: typhoon_init_one: make return values more specific
  net: Allow IP_MULTICAST_IF to set index to L3 slave
  fscrypt: use ENOTDIR when setting encryption policy on nondirectory
  fscrypt: use ENOKEY when file cannot be created w/o key
  dmaengine: zx: set DMA_CYCLIC cap_mask bit
  clk: sunxi-ng: fix PLL_CPUX adjusting on A33
  clk: sunxi-ng: A31: Fix spdif clock register
  drm/sun4i: Fix a return value in case of error
  PCI: Apply _HPX settings only to relevant devices
  RDS: RDMA: fix the ib_map_mr_sg_zbva() argument
  RDS: RDMA: return appropriate error on rdma map failures
  RDS: make message size limit compliant with spec
  e1000e: Avoid receiver overrun interrupt bursts
  e1000e: Separate signaling for link check/link up
  e1000e: Fix return value test
  e1000e: Fix error path in link detection
  Revert "drm/i915: Do not rely on wm preservation for ILK watermarks"
  PM / OPP: Add missing of_node_put(np)
  net/9p: Switch to wait_event_killable()
  fscrypt: lock mutex before checking for bounce page pool
  sched/rt: Simplify the IPI based RT balancing logic
  media: v4l2-ctrl: Fix flags field on Control events
  cx231xx-cards: fix NULL-deref on missing association descriptor
  media: rc: check for integer overflow
  media: Don't do DMA on stack for firmware upload in the AS102 driver
  powerpc/signal: Properly handle return value from uprobe_deny_signal()
  parisc: Fix validity check of pointer size argument in new CAS implementation
  ixgbe: Fix skb list corruption on Power systems
  fm10k: Use smp_rmb rather than read_barrier_depends
  i40evf: Use smp_rmb rather than read_barrier_depends
  ixgbevf: Use smp_rmb rather than read_barrier_depends
  igbvf: Use smp_rmb rather than read_barrier_depends
  igb: Use smp_rmb rather than read_barrier_depends
  i40e: Use smp_rmb rather than read_barrier_depends
  NFC: fix device-allocation error return
  IB/srp: Avoid that a cable pull can trigger a kernel crash
  IB/srpt: Do not accept invalid initiator port names
  libnvdimm, namespace: make 'resource' attribute only readable by root
  libnvdimm, namespace: fix label initialization to use valid seq numbers
  libnvdimm, pfn: make 'resource' attribute only readable by root
  clk: ti: dra7-atl-clock: fix child-node lookups
  SUNRPC: Fix tracepoint storage issues with svc_recv and svc_rqst_status
  KVM: SVM: obey guest PAT
  KVM: nVMX: set IDTR and GDTR limits when loading L1 host state
  lockd: double unregister of inetaddr notifiers
  irqchip/gic-v3: Fix ppi-partitions lookup
  block: Fix a race between blk_cleanup_queue() and timeout handling
  p54: don't unregister leds when they are not initialized
  mtd: nand: mtk: fix infinite ECC decode IRQ issue
  mtd: nand: Fix writing mtdoops to nand flash.
  mtd: nand: omap2: Fix subpage write
  target: Fix QUEUE_FULL + SCSI task attribute handling
  iscsi-target: Fix non-immediate TMR reference leak
  fs/9p: Compare qid.path in v9fs_test_inode
  fix a page leak in vhost_scsi_iov_to_sgl() error recovery
  ALSA: hda/realtek - Fix ALC700 family no sound issue
  ALSA: hda: Fix too short HDMI/DP chmap reporting
  ALSA: timer: Remove kernel warning at compat ioctl error paths
  ALSA: usb-audio: Add sanity checks in v2 clock parsers
  ALSA: usb-audio: Fix potential out-of-bound access at parsing SU
  ALSA: usb-audio: Add sanity checks to FE parser
  ALSA: pcm: update tstamp only if audio_tstamp changed
  ext4: fix interaction between i_size, fallocate, and delalloc after a crash
  ata: fixes kernel crash while tracing ata_eh_link_autopsy event
  rtlwifi: fix uninitialized rtlhal->last_suspend_sec time
  rtlwifi: rtl8192ee: Fix memory leak when loading firmware
  nfsd: deal with revoked delegations appropriately
  NFS: Avoid RCU usage in tracepoints
  nfs: Fix ugly referral attributes
  NFS: Fix typo in nomigration mount option
  isofs: fix timestamps beyond 2027
  bcache: check ca->alloc_thread initialized before wake up it
  libceph: don't WARN() if user tries to add invalid key
  eCryptfs: use after free in ecryptfs_release_messaging()
  nilfs2: fix race condition that causes file system corruption
  autofs: don't fail mount for transient error
  rt2x00usb: mark device removed when get ENOENT usb error
  MIPS: BCM47XX: Fix LED inversion for WRT54GSv1
  MIPS: Fix an n32 core file generation regset support regression
  MIPS: dts: remove bogus bcm96358nb4ser.dtb from dtb-y entry
  MIPS: Fix odd fp register warnings with MIPS64r2
  dm: fix race between dm_get_from_kobject() and __dm_destroy()
  MIPS: pci: Remove KERN_WARN instance inside the mt7620 driver
  dm: allocate struct mapped_device with kvzalloc
  dm bufio: fix integer overflow when limiting maximum cache size
  ALSA: hda: Add Raven PCI ID
  PCI: Set Cavium ACS capability quirk flags to assert RR/CR/SV/UF
  MIPS: ralink: Fix typo in mt7628 pinmux function
  MIPS: ralink: Fix MT7628 pinmux
  ARM: 8721/1: mm: dump: check hardware RO bit for LPAE
  ARM: 8722/1: mm: make STRICT_KERNEL_RWX effective for LPAE
  arm64: Implement arch-specific pte_access_permitted()
  x86/entry/64: Add missing irqflags tracing to native_load_gs_index()
  x86/decoder: Add new TEST instruction pattern
  lib/mpi: call cond_resched() from mpi_powm() loop
  sched: Make resched_cpu() unconditional
  vsock: use new wait API for vsock_stream_sendmsg()
  ipv6: only call ip6_route_dev_notify() once for NETDEV_UNREGISTER
  x86/mm: fix use-after-free of vma during userfaultfd fault
  ACPI / EC: Fix regression related to triggering source of EC event handling
  s390/disassembler: increase show_code buffer size
  s390/disassembler: add missing end marker for e7 table
  s390/runtime instrumention: fix possible memory corruption
  s390: fix transactional execution control register handling

Conflicts:
	drivers/android/binder_alloc.c
	drivers/android/binder_alloc.h
	drivers/android/binder_alloc_selftest.c
	drivers/mmc/core/bus.c
	drivers/mmc/host/sdhci-msm.c
	drivers/thermal/step_wise.c
	kernel/cpu.c
	mm/oom_kill.c
	sound/usb/mixer.c

Change-Id: Id01eb66cafc5970b460321e44ec8ffcfa76971a6
Signed-off-by: Kyle Yan <kyan@codeaurora.org>
2018-01-02 10:37:28 -08:00
Alexandre Belloni
15319d2a49 rtc: set the alarm to the next expiring timer
[ Upstream commit 74717b28cb32e1ad3c1042cafd76b264c8c0f68d ]

If there is any non expired timer in the queue, the RTC alarm is never set.
This is an issue when adding a timer that expires before the next non
expired timer.

Ensure the RTC alarm is set in that case.

Fixes: 2b2f5ff00f ("rtc: interface: ignore expired timers when enqueuing new timers")
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-25 14:23:46 +01:00
Mao Jinlong
a21a4188cf rtc: Disable alarm irq if alarm time is in the past
If device is boot up by rtc alarm, the alarm irq will still be
enabled and the alarm time is smaller than current rtc time before
any alarm is set or canceled. If device is powered off now, it will
boot up automatically as the alarm irq is enabled.

So disable alarm irq if alarm is enabled and alarm time is in the
past.

CRs-Fixed: 2109666
Change-Id: Ie60bd1222a400cd45a6c5a385faa70190fbe7e3c
Signed-off-by: Mao Jinlong <jinlmao@codeaurora.org>
2017-10-27 15:47:05 +08:00
Uwe Kleine-König
6785b3b60b rtc: fix a typo and reduce three empty lines to one
Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2016-07-11 23:22:35 +02:00
Colin Ian King
2b2f5ff00f rtc: interface: ignore expired timers when enqueuing new timers
This patch fixes a RTC wakealarm issue, namely, the event fires during
hibernate and is not cleared from the list, causing hwclock to block.

The current enqueuing does not trigger an alarm if any expired timers
already exist on the timerqueue. This can occur when a RTC wake alarm
is used to wake a machine out of hibernate and the resumed state has
old expired timers that have not been removed from the timer queue.
This fix skips over any expired timers and triggers an alarm if there
are no pending timers on the timerqueue. Note that the skipped expired
timer will get reaped later on, so there is no need to clean it up
immediately.

The issue can be reproduced by putting a machine into hibernate and
waking it with the RTC wakealarm.  Running the example RTC test program
from tools/testing/selftests/timers/rtctest.c after the hibernate will
block indefinitely.  With the fix, it no longer blocks after the
hibernate resume.

BugLink: http://bugs.launchpad.net/bugs/1333569

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2016-06-04 15:43:22 +02:00
Uwe Kleine-König
d68778b80d rtc: initialize output parameter for read alarm to "uninitialized"
rtc drivers are supposed to set values they don't support to -1. To
simplify this for drivers and also make it harder for them to get it
wrong initialize the values to -1.

Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2016-05-30 01:37:11 +02:00
Joshua Clayton
b3967067c2 rtc: Add functions to set and read rtc offset
A number of rtc devices, such as the NXP pcf2123 include a facility
to adjust the clock in order to compensate for temperature or a
crystal, capacitor, etc, that results in the rtc clock not running
at exactly 32.768 kHz.

Data sheets I have seen refer to this as a clock offset, and measure it
in parts per million, however they often reference ppm to 2 digits of
precision, which makes integer ppm less than ideal.

We use parts per billion, which more than covers the precision needed
and works nicely within 32 bits

Signed-off-by: Joshua Clayton <stillcompiling@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2016-03-14 17:08:15 +01:00
viresh kumar
e7cba884af rtc: Drop (un)likely before IS_ERR(_OR_NULL)
IS_ERR(_OR_NULL) already contain an 'unlikely' compiler flag and there
is no need to do that again from its callers. Drop it.

gemini driver was using likely() for a failure case while the rtc driver
is getting registered. That looks wrong and it should really be
unlikely. But because we are killing all the unlikely() flags, lets kill
that too.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:09 +02:00
Xunlei Pang
c86a6c2895 rtc: interface: Remove rtc_set_mmss()
Now rtc_set_mmss() has no users, just remove it.

We still have rtc_set_time() doing similar things.

Signed-off-by: Xunlei Pang <pang.xunlei@linaro.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-06-25 01:13:43 +02:00
Krzysztof Kozlowski
73744a64aa rtc: interface: Remove unused return value from rtc_timer_cancel()
The rtc_timer_cancel() always returns 0 and cannot fail (calls only
other void-returning functions).

Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-06-19 20:03:20 +02:00
Aaro Koskinen
d0bddb512d drivers/rtc/interface.c: __rtc_read_time: reduce log level
__rtc_read_time logs should be debug logs instead of error logs.

For example, when the RTC clock is not set, it's not really useful
to print a kernel error log every time someone tries to read the clock:

	~ # hwclock -r
	[  604.508263] rtc rtc0: read_time: fail to read
	hwclock: RTC_RD_TIME: Invalid argument

If there's a real error, it's likely that lower level or higher level
code will tell it anyway. Make these logs debug logs, and also print
the error code for the read failure.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-17 09:04:01 -04:00
Xunlei Pang
8e4ff1a81a drivers/rtc: Provide y2038 safe rtc_class_ops.set_mmss() replacement
Currently the rtc_class_op's set_mmss() function takes a 32-bit
second value (on 32-bit systems), which is problematic for dates
past y2038.

This patch provides a safe version named set_mmss64() using
y2038 safe time64_t.

After this patch, set_mmss() is deprecated and all its users
will be fixed to use set_mmss64(), it can be removed when having
no users.

Signed-off-by: Xunlei Pang <pang.xunlei@linaro.org>
[jstultz: Add whitespace fix for checkpatch]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1427945681-29972-8-git-send-email-john.stultz@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-03 08:18:24 +02:00
Xunlei Pang
bc10aa93a8 rtc: Update interface.c to use y2038-safe time interfaces
Currently, interface.c uses y2038 problematic rtc_tm_to_time()
and rtc_time_to_tm(). So replace them with their corresponding
y2038-safe versions: rtc_tm_to_time64() and rtc_time64_to_tm().

Cc: pang.xunlei <pang.xunlei@linaro.org>
Cc: Arnd Bergmann <arnd.bergmann@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Xunlei Pang <pang.xunlei@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
2015-01-23 17:21:55 -08:00
Xunlei Pang
6528b88995 rtc: refine rtc_timer_do_work() to consider other set alarm failures
rtc_timer_do_work() only judges -ETIME failure of__rtc_set_alarm(), but
doesn't handle other failures like -EIO, -EBUSY, etc.

If there is a failure other than -ETIME, the next rtc_timer will stay in
the timerqueue.  Then later rtc_timers will be enqueued directly because
they have a later expires time, so the alarm irq will never be programmed.

When such failures happen, this patch will retry __rtc_set_alarm(), if
still can't program the alarm time, it will remove current rtc_timer from
timerqueue and fetch next one, thus preventing it from affecting other rtc
timers.

Signed-off-by: Xunlei Pang <pang.xunlei@linaro.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Arnd Bergmann <arnd.bergmann@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:16 -08:00
Hyogi Gim
16682c86d2 drivers/rtc/interface.c: check the validation of rtc_time in __rtc_read_time
Some rtc devices always return '0' when rtc_class_ops.read_time is
called.  So if rtc_time isn't verified in callback, rtc interface cannot
know whether rtc_time is valid.

Check rtc_time by using 'rtc_valid_tm' in '__rtc_read_time'.  And add
the message for debugging.

Signed-off-by: Hyogi Gim <hyogi.gim@lge.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: John Stultz <john.stultz@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-10 17:41:13 -08:00
Hyogi Gim
ca6dc2dab9 drivers/rtc/interface.c: check the error after __rtc_read_time()
In __rtc_set_alarm(), the error after __rtc_read_time() is not checked.
If rtc device fail to read time, we cannot guarantee the following
process.

Add the verification code for returned __rtc_read_time() error.

Signed-off-by: Hyogi Gim <hyogi.gim@lge.com>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-08-08 15:57:19 -07:00
Ales Novak
ee1d901468 drivers/rtc/interface.c: fix infinite loop in initializing the alarm
In __rtc_read_alarm(), if the alarm time retrieved by
rtc_read_alarm_internal() from the device contains invalid values (e.g.
month=2,mday=31) and the year not set (=-1), the initialization will
loop infinitely because the year-fixing loop expects the time being
invalid due to leap year.

Fix reduces the loop to the leap years and adds final validity check.

Signed-off-by: Ales Novak <alnovak@suse.cz>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Reported-by: Jiri Bohac <jbohac@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 16:08:06 -07:00
Alessandro Zummo
131c9cc832 rtc: verify a critical argument to rtc_update_irq() before using it
This small addition to the core simplifies code in the drivers and makes
them more robust when handling shared IRQs.

Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-03 16:21:22 -07:00
Zoran Markovic
14d0e347ea rtc: Keep system awake until all expired RTC timers are handled
Current implementation of RTC interface allows for system suspend to
occur in the following cases:
(a) if a timer is set in the past and rtc_timer_do_work() is scheduled
to handle it, and
(b) if rtc_timer_do_work() is called to handle expired timers whose
handlers implement a preemption point.

A pending suspend request may be honoured in the above cases causing
timer handling to be delayed until after the next resume. This is
undesirable since timer handlers may have time-critical code to execute.

This patch makes sure that the system stays awake until all expired
timers are handled.

Note that all calls to pm_stay_awake() are eventually paired with
the single pm_relax() call in rtc_timer_do_work(), which is launched
using schedule_work().

Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Arve Hjonnevag <arve@android.com>
Cc: Todd Poynor <toddpoynor@google.com>
Signed-off-by: Zoran Markovic <zoran.markovic@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
2013-07-22 09:38:25 -07:00
Chris Brand
0734e27f0b drivers/rtc/interface.c: return -EBUSY, not -EACCES when device is busy
If rtc->irq_task is non-NULL and task is NULL, they always
rtc_irq_set_freq(), whenever err is set to -EBUSY it will then immediately
be set to -EACCES, misleading the caller as to the underlying problem.

Signed-off-by: Chris Brand <chris.brand@broadcom.com>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:08:00 -07:00
Sachin Kamat
3ff2e13ce1 drivers/rtc/interface.c: fix checkpatch errors
Fixes the following types of errors:
  ERROR: "foo* bar" should be "foo *bar"
  ERROR: else should follow close brace '}'
  WARNING: braces {} are not necessary for single statement blocks

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:46 -07:00
Michał Mirosław
9f3b795a62 driver-core: constify data for class_find_device()
All in-kernel users of class_find_device() don't really need mutable
data for match callback.

In two places (kernel/power/suspend_test.c, drivers/scsi/osd/osd_uld.c)
this patch changes match callbacks to use const search data.

The const is propagated to rtc_class_open() and power_supply_get_by_name()
parameters.

Note that there's a dev reference leak in suspend_test.c that's not
touched in this patch.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-06 12:18:56 -08:00
NeilBrown
7523ceed42 RTC: Avoid races between RTC alarm wakeup and suspend.
If an RTC alarm fires just as suspend is happening, it is possible for
suspend to complete and the alarm to be missed.

To avoid the race, we must register the event with the PM core.

As the event is made visible to userspace through a thread which is
only scheduled by the interrupt, we need a pm_stay_awake/pm_relax
pair preventing suspend from the interrupt until the thread completes
its work.

This makes the pm_wakeup_event() call in cmos_interrupt unnecessary as
it provides suspend protection for all RTCs that use rtc_update_irq.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-08-08 20:49:16 +02:00
John Stultz
4a649903f9 rtc: Provide flag for rtc devices that don't support UIE
Richard Weinberger noticed that on some RTC hardware that
doesn't support UIE mode, due to coarse granular alarms
(like 1minute resolution), the current virtualized RTC
support doesn't properly error out when UIE is enabled.

Instead the current code queues an alarm for the next second,
but it won't fire until up to a miniute later.

This patch provides a generic way to flag this sort of hardware
and fixes the issue on the mpc5121 where Richard noticed the
problem.

CC: stable@vger.kernel.org
Reported-by: Richard Weinberger <richard@nod.at>
Tested-by: Richard Weinberger <richard@nod.at>
Signed-off-by: John Stultz <john.stultz@linaro.org>
2012-03-15 18:23:10 -07:00
Rabin Vincent
41c7f74242 rtc: Disable the alarm in the hardware (v2)
Currently, the RTC code does not disable the alarm in the hardware.

This means that after a sequence such as the one below (the files are in the
RTC sysfs), the box will boot up after 2 minutes even though we've
asked for the alarm to be turned off.

	# echo $((`cat since_epoch`)+120) > wakealarm
	# echo 0 > wakealarm
	# poweroff

Fix this by disabling the alarm when there are no timers to run.

The original version of this patch was reverted. This version
disables the irq directly instead of setting a disabled timer
in the future.

Cc: stable@kernel.org
Cc: John Stultz <john.stultz@linaro.org>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
[Merged in the second revision from Rabin]
Signed-off-by: John Stultz <john.stultz@linaro.org>
2012-01-26 19:41:42 -08:00
NeilBrown
5f9679d29c rtc: Expire alarms after the time is set. (v2)
If the alarm time programming in the rtc is ever in the past, it won't fire,
and any other alarm will be queued after it so they won't fire either.

So any time that the alarm might be in the past, we need to trigger
the irq handler to ensure the old alarm is cleared and the timer queue
is fully in the future.

This is done whenever the RTC clock is set.

This is the second revision of this patch, which was earlier reverted.
This version avoids the initialization problem, which is handled by
a different patch.

Tested-by: Sander Eikelenboom <linux@eikelenboom.it>
Signed-off-by: NeilBrown <neilb@suse.de>
[Remove problematic initialization change, update commit log, also
catch set_mmss case -jstultz]
Signed-off-by: John Stultz <john.stultz@linaro.org>
2012-01-26 19:41:36 -08:00
John Stultz
bd729d72b4 rtc: Avoid setting alarm to a time in the past
In some cases at boot up, the RTC alarm may be set in the past,
but still have the enabled flag on. This was causing problems,
because we would then enqueue the alarm into the timerqueue,
but it would never fire. This would clog up the timerqueue
and keep other alarms from working.

The fix is to check the alarm against the current rtc time at
boot and avoid enqueueing the alarm if it is in the past.

Reported-by: NeilBrown <neilb@suse.de>
Tested-by: NeilBrown <neilb@suse.de>
Tested-by: Sander Eikelenboom <linux@eikelenboom.it>
Signed-off-by: John Stultz <john.stultz@linaro.org>
2012-01-26 19:41:30 -08:00
Ben Hutchings
e74a8f2edb drivers/rtc/interface.c: fix alarm rollover when day or month is out-of-range
Commit f44f7f96a2 ("RTC: Initialize kernel state from RTC") introduced a
potential infinite loop.  If an alarm time contains a wildcard month and
an invalid day (> 31), or a wildcard year and an invalid month (>= 12),
the loop searching for the next matching date will never terminate.  Treat
the invalid values as wildcards.

Fixes <http://bugs.debian.org/646429>, <http://bugs.debian.org/653331>

Reported-by: leo weppelman <leoweppelman@googlemail.com>
Reported-by: "P. van Gaans" <mailme667@yahoo.co.uk>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Marcelo Roberto Jimenez <mroberto@cpti.cetuc.puc-rio.br>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <john.stultz@linaro.org>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-01-10 16:30:53 -08:00
Linus Torvalds
f423fc627b Revert "rtc: Expire alarms after the time is set."
This reverts commit 93b2ec0128.

The call to "schedule_work()" in rtc_initialize_alarm() happens too
early, and can cause oopses at bootup

Neil Brown explains why we do it:

  "If you set an alarm in the future, then shutdown and boot again after
   that time, then you will end up with a timer_queue node which is in
   the past.

   When this happens the queue gets stuck.  That entry-in-the-past won't
   get removed until and interrupt happens and an interrupt won't happen
   because the RTC only triggers an interrupt when the alarm is "now".

   So you'll find that e.g.  "hwclock" will always tell you that
   'select' timed out.

   So we force the interrupt work to happen at the start just in case."

and has a patch that convert it to do things in-process rather than with
the worker thread, but right now it's too late to play around with this,
so we just revert the patch that caused problems for now.

Reported-by: Sander Eikelenboom <linux@eikelenboom.it>
Requested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Requested-by: John Stultz <john.stultz@linaro.org>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-01-04 07:57:22 -08:00
Linus Torvalds
157e8bf8b4 Revert "rtc: Disable the alarm in the hardware"
This reverts commit c0afabd3d5.

It causes failures on Toshiba laptops - instead of disabling the alarm,
it actually seems to enable it on the affected laptops, resulting in
(for example) the laptop powering on automatically five minutes after
shutdown.

There's a patch for it that appears to work for at least some people,
but it's too late to play around with this, so revert for now and try
again in the next merge window.

See for example

	http://bugs.debian.org/652869

Reported-and-bisected-by: Andreas Friedrich <afrie@gmx.net> (Toshiba Tecra)
Reported-by: Antonio-M. Corbi Bellot <antonio.corbi@ua.es> (Toshiba Portege R500)
Reported-by: Marco Santos <marco.santos@waynext.com> (Toshiba Portege Z830)
Reported-by: Christophe Vu-Brugier <cvubrugier@yahoo.fr>  (Toshiba Portege R830)
Cc: Jonathan Nieder <jrnieder@gmail.com>
Requested-by: John Stultz <john.stultz@linaro.org>
Cc: stable@kernel.org  # for the versions that applied this
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-01-03 17:32:13 -08:00
NeilBrown
93b2ec0128 rtc: Expire alarms after the time is set.
If the alarm time programming in the rtc is ever in the past, it won't fire,
and any other alarm will be queued after it so they won't fire either.

So any time that the alarm might be in the past, we need to trigger
the irq handler to ensure the old alarm is cleared and the timer queue
is fully in the future.

This can happen:
 - when we first initialise the alarm
 - when we set the time in the rtc.

so follow both of these by scheduling the timer work function.

CC: stable@kernel.org
Signed-off-by: NeilBrown <neilb@suse.de>
[Also catch set_mmss case -jstultz]
Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-12-13 12:26:11 -08:00
Linus Torvalds
40c043b077 Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clockevents: Set noop handler in clockevents_exchange_device()
  tick-broadcast: Stop active broadcast device when replacing it
  clocksource: Fix bug with max_deferment margin calculation
  rtc: Fix some bugs that allowed accumulating time drift in suspend/resume
  rtc: Disable the alarm in the hardware
2011-12-05 16:53:43 -08:00
Rabin Vincent
c0afabd3d5 rtc: Disable the alarm in the hardware
Currently, the RTC code does not disable the alarm in the hardware.

This means that after a sequence such as the one below (the files are in the
RTC sysfs), the box will boot up after 2 minutes even though we've
asked for the alarm to be turned off.

	# echo $((`cat since_epoch`)+120) > wakealarm
	# echo 0 > wakealarm
	# poweroff

Fix this by disabling the alarm when there are no timers to run.

Cc: stable@kernel.org
Cc: John Stultz <john.stultz@linaro.org>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-11-22 19:25:43 -08:00
Paul Gortmaker
2113852b23 rtc: Add module.h to implicit users in drivers/rtc
The module.h was implicitly everywhere, but when we clean
that up, the implicit users will compile fail; fix them up
in advance.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-31 19:31:28 -04:00
Thomas Gleixner
b830ac1d9a rtc: fix hrtimer deadlock
Ben reported a lockup related to rtc. The lockup happens due to:

CPU0                                        CPU1

rtc_irq_set_state()			    __run_hrtimer()
  spin_lock_irqsave(&rtc->irq_task_lock)    rtc_handle_legacy_irq();
					      spin_lock(&rtc->irq_task_lock);
  hrtimer_cancel()
    while (callback_running);

So the running callback never finishes as it's blocked on
rtc->irq_task_lock.

Use hrtimer_try_to_cancel() instead and drop rtc->irq_task_lock while
waiting for the callback.  Fix this for both rtc_irq_set_state() and
rtc_irq_set_freq().

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reported-by: Ben Greear <greearb@candelatech.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-26 16:49:42 -07:00
Thomas Gleixner
431e2bcc37 rtc: limit frequency
Due to the hrtimer self rearming mode a user can DoS the machine simply
because it's starved by hrtimer events.

The RTC hrtimer is self rearming.  We really need to limit the frequency
to something sensible.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Ben Greear <greearb@candelatech.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-26 16:49:42 -07:00
Thomas Gleixner
2c4f57d12d rtc: handle errors correctly in rtc_irq_set_state()
The code checks the correctness of the parameters, but unconditionally
arms/disarms the hrtimer.

The result is that a random task might arm/disarm rtc timer and surprise
the real owner by either generating events or by stopping them.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Ben Greear <greearb@candelatech.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-07-26 16:49:41 -07:00
Thomas Gleixner
6e7a333eaa rtc: Limit RTC PIE frequency
The RTC pie hrtimer is self rearming. We really need to limit the
frequency to something sensible. Thus limit it to the 8192Hz max
value from the rtc man documentation

Cc: Willy Tarreau <w@1wt.eu>
Cc: stable@kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
[jstultz: slightly reworked to use RTC_MAX_FREQ value]
Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-07-26 14:50:01 -07:00
Thomas Gleixner
3c8bb90efb rtc: Fix hrtimer deadlock
Ben reported a lockup related to rtc. The lockup happens due to:

CPU0                                        CPU1

rtc_irq_set_state()			    __run_hrtimer()
  spin_lock_irqsave(&rtc->irq_task_lock)    rtc_handle_legacy_irq();
					      spin_lock(&rtc->irq_task_lock);
  hrtimer_cancel()
    while (callback_running);

So the running callback never finishes as it's blocked on
rtc->irq_task_lock.

Use hrtimer_try_to_cancel() instead and drop rtc->irq_task_lock while
waiting for the callback. Fix this for both rtc_irq_set_state() and
rtc_irq_set_freq().

Cc: stable@kernel.org
Reported-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-07-26 14:49:59 -07:00
Thomas Gleixner
53cc2820ac rtc: Handle errors correctly in rtc_irq_set_state()
In rtc_irq_set_state, the code checks the correctness of the parameters,
but then goes on to unconditionally arms/disarms the hrtimer. Thus a
random task might arm/disarm rtc timer and surprise the real owner by
either generating events or by stopping them.

Cc: stable@kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-07-26 14:49:57 -07:00
Mark Brown
d576fe49ca rtc: Staticize non-exported __rtc_set_alarm()
It's not referenced outside this file so there's no need for it to be in
the global namespace and sparse warns about that.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-06-01 19:29:40 -07:00
Thomas Gleixner
92f73a62a1 Merge branch 'fortglx/39/tip/timers/rtc' of git://git.linaro.org/people/jstultz/linux into timers/urgent 2011-04-13 01:54:09 +02:00
Lucas De Marchi
25985edced Fix common misspellings
Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-31 11:26:23 -03:00
John Stultz
f6d5b33125 RTC: Fix early irqs caused by calling rtc_set_alarm too early
When we register an rtc device at boot, we read the alarm value
in hardware and set the rtc device's aie_timer to that value.

The initial method to do this was to simply call rtc_set_alarm()
with the value read from hardware. However, this may cause problems
as rtc_set_alarm may enable interupts, and the RTC alarm might fire,
which can cause invalid pointer dereferencing since the RTC registration
is not complete.

This patch solves the issue by initializing the rtc_device.aie_timer
y hand via rtc_initialize_alarm(). This avoids any calls to the RTC
hardware which might enable interrupts too early.

CC: Thomas Gleixner <tglx@linutronix.de>
CC: Alessandro Zummo <a.zummo@towertech.it>
Reported-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-03-29 18:44:05 -07:00
John Stultz
f44f7f96a2 RTC: Initialize kernel state from RTC
Mark Brown pointed out a corner case: that RTC alarms should
be allowed to be persistent across reboots if the hardware
supported it.

The rework of the generic layer to virtualize the RTC alarm
virtualized much of the alarm handling, and removed the
code used to read the alarm time from the hardware.

Mark noted if we want the alarm to be persistent across
reboots, we need to re-read the alarm value into the
virtualized generic layer at boot up, so that the generic
layer properly exposes that value.

This patch restores much of the earlier removed
rtc_read_alarm code and wires it in so that we
set the kernel's alarm value to what we find in the
hardware at boot time.

NOTE: Not all hardware supports persistent RTC alarm state across
system reset. rtc-cmos for example will keep the alarm time, but
disables the AIE mode irq. Applications should not expect the RTC
alarm to be valid after a system reset. We will preserve what
we can, to represent the hardware state at boot, but its not
guarenteed.

Further, in the future, with multiplexed RTC alarms, the
soonest alarm to fire may not be the one set via the /dev/rt
ioctls. So an application may set the alarm with RTC_ALM_SET,
but after a reset find that RTC_ALM_READ returns an earlier
time. Again, we preserve what we can, but applications should
not expect the RTC alarm state to persist across a system reset.

Big thanks to Mark for pointing out the issue!
Thanks also to Marcelo for helping think through the solution.

CC: Mark Brown <broonie@opensource.wolfsonmicro.com>
CC: Marcelo Roberto Jimenez <mroberto@cpti.cetuc.puc-rio.br>
CC: Thomas Gleixner <tglx@linutronix.de>
CC: Alessandro Zummo <a.zummo@towertech.it>
CC: rtc-linux@googlegroups.com
Reported-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-03-09 11:22:50 -08:00
John Stultz
456d66ecd0 RTC: Re-enable UIE timer/polling emulation
This patch re-enables UIE timer/polling emulation for rtc devices
that do not support alarm irqs.

CC: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
CC: Thomas Gleixner <tglx@linutronix.de>
Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Tested-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-02-17 14:59:42 -08:00
Uwe Kleine-König
516373b8b6 RTC: Release mutex in error path of rtc_alarm_irq_enable
On hardware that doesn't support alarm interrupts, rtc_alarm_irq_enable
could return without releasing the ops_lock mutex.

This was introduced in
	aa0be0f (RTC: Propagate error handling via rtc_timer_enqueue properly)

This patch corrects the issue by only returning once the mutex is
released.

[john.stultz: Reworded the commit log]

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-02-17 14:59:22 -08:00
Marcelo Roberto Jimenez
83a06bf50b RTC: Prevents a division by zero in kernel code.
This patch prevents a user space program from calling the RTC_IRQP_SET
ioctl with a negative value of frequency. Also, if this call is make
with a zero value of frequency, there would be a division by zero in the
kernel code.

[jstultz: Also initialize irq_freq to 1 to catch other divbyzero issues]

CC: Alessandro Zummo <a.zummo@towertech.it>
CC: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Marcelo Roberto Jimenez <mroberto@cpti.cetuc.puc-rio.br>
Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-02-03 12:59:50 -08:00