Commit Graph

872271 Commits

Author SHA1 Message Date
Linus Torvalds
992cb107e1 Merge branch 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
 "A few driver fixes for the I2C subsystem"

* 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: stm32f7: remove warning when compiling with W=1
  i2c: stm32f7: fix a race in slave mode with arbitration loss irq
  i2c: stm32f7: fix first byte to send in slave mode
  i2c: mt65xx: fix NULL ptr dereference
  i2c: aspeed: fix master pending state handling
2019-10-26 15:06:58 -04:00
Linus Torvalds
acf913b7fb Merge tag 'for-linus-2019-10-26' of git://git.kernel.dk/linux-block
Pull block and io_uring fixes from Jens Axboe:
 "A bit bigger than usual at this point in time, mostly due to some good
  bug hunting work by Pavel that resulted in three io_uring fixes from
  him and two from me. Anyway, this pull request contains:

   - Revert of the submit-and-wait optimization for io_uring, it can't
     always be done safely. It depends on commands always making
     progress on their own, which isn't necessarily the case outside of
     strict file IO. (me)

   - Series of two patches from me and three from Pavel, fixing issues
     with shared data and sequencing for io_uring.

   - Lastly, two timeout sequence fixes for io_uring (zhangyi)

   - Two nbd patches fixing races (Josef)

   - libahci regulator_get_optional() fix (Mark)"

* tag 'for-linus-2019-10-26' of git://git.kernel.dk/linux-block:
  nbd: verify socket is supported during setup
  ata: libahci_platform: Fix regulator_get_optional() misuse
  nbd: handle racing with error'ed out commands
  nbd: protect cmd->status with cmd->lock
  io_uring: fix bad inflight accounting for SETUP_IOPOLL|SETUP_SQTHREAD
  io_uring: used cached copies of sq->dropped and cq->overflow
  io_uring: Fix race for sqes with userspace
  io_uring: Fix broken links with offloading
  io_uring: Fix corrupted user_data
  io_uring: correct timeout req sequence when inserting a new entry
  io_uring : correct timeout req sequence when waiting timeout
  io_uring: revert "io_uring: optimize submit_and_wait API"
2019-10-26 14:59:51 -04:00
Linus Torvalds
f877bee5ea Merge tag 's390-5.4-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Vasily Gorbik:

 - Add R_390_GLOB_DAT relocation type support. This fixes boot problem
   on linux-next.

 - Fix memory leak in zcrypt

* tag 's390-5.4-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/kaslr: add support for R_390_GLOB_DAT relocation type
  s390/zcrypt: fix memleak at release
2019-10-26 06:35:46 -04:00
Linus Torvalds
4fac2407f8 Merge tag 'for-linus-5.4-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixlet from Juergen Gross:
 "Just one patch for issuing a deprecation warning for 32-bit Xen pv
  guests"

* tag 'for-linus-5.4-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen: issue deprecation warning for 32-bit pv guest
2019-10-26 06:32:12 -04:00
Linus Torvalds
964f9cfaae Merge tag 'dma-mapping-5.4-2' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping fix from Christoph Hellwig:
 "Fix a regression in the intel-iommu get_required_mask conversion
  (Arvind Sankar)"

* tag 'dma-mapping-5.4-2' of git://git.infradead.org/users/hch/dma-mapping:
  iommu/vt-d: Return the correct dma mask when we are bypassing the IOMMU
2019-10-26 06:29:04 -04:00
Linus Torvalds
485fc4b69c Merge tag 'dax-fix-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull dax fix from Dan Williams:
 "Fix a performance regression that followed from a fix to the
  conversion of the fsdax implementation to the xarray. v5.3 users
  report that they stop seeing huge page mappings on an application +
  filesystem layout that was seeing huge pages previously on v5.2"

* tag 'dax-fix-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  fs/dax: Fix pmd vs pte conflict detection
2019-10-26 06:26:04 -04:00
Linus Torvalds
1c4e395cf7 Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
 "Nine changes, eight to drivers (qla2xxx, hpsa, lpfc, alua, ch,
  53c710[x2], target) and one core change that tries to close a race
  between sysfs delete and module removal"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: lpfc: remove left-over BUILD_NVME defines
  scsi: core: try to get module before removing device
  scsi: hpsa: add missing hunks in reset-patch
  scsi: target: core: Do not overwrite CDB byte 1
  scsi: ch: Make it possible to open a ch device multiple times again
  scsi: fix kconfig dependency warning related to 53C700_LE_ON_BE
  scsi: sni_53c710: fix compilation error
  scsi: scsi_dh_alua: handle RTPG sense code correctly during state transitions
  scsi: qla2xxx: fix a potential NULL pointer dereference
2019-10-25 20:11:33 -04:00
Linus Torvalds
b4b61b224d Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fix from Dmitry Torokhov:
 "A fix for st1232 driver to properly report coordinates for 2nd and
  subsequent fingers when more than one is on the surface"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: st1232 - fix reporting multitouch coordinates
2019-10-25 17:31:53 -04:00
Mike Christie
cf1b2326b7 nbd: verify socket is supported during setup
nbd requires socket families to support the shutdown method so the nbd
recv workqueue can be woken up from its sock_recvmsg call. If the socket
does not support the callout we will leave recv works running or get hangs
later when the device or module is removed.

This adds a check during socket connection/reconnection to make sure the
socket being passed in supports the needed callout.

Reported-by: syzbot+24c12fa8d218ed26011a@syzkaller.appspotmail.com
Fixes: e9e006f5fc ("nbd: fix max number of supported devs")
Tested-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-10-25 14:37:21 -06:00
Mark Brown
962399bb7f ata: libahci_platform: Fix regulator_get_optional() misuse
This driver is using regulator_get_optional() to handle all the supplies
that it handles, and only ever enables and disables all supplies en masse
without ever doing any other configuration of the device to handle missing
power. These are clear signs that the API is being misused - it should only
be used for supplies that may be physically absent from the system and in
these cases the hardware usually needs different configuration if the
supply is missing. Instead use normal regualtor_get(), if the supply is
not described in DT then the framework will substitute a dummy regulator in
so no special handling is needed by the consumer driver.

In the case of the PHY regulator the handling in the driver is a hack to
deal with integrated PHYs; the supplies are only optional in the sense
that that there's some confusion in the code about where they're bound to.
From a code point of view they function exactly as normal supplies so can
be treated as such. It'd probably be better to model this by instantiating
a PHY object for integrated PHYs.

Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-10-25 14:22:20 -06:00
Josef Bacik
7ce23e8e0a nbd: handle racing with error'ed out commands
We hit the following warning in production

print_req_error: I/O error, dev nbd0, sector 7213934408 flags 80700
------------[ cut here ]------------
refcount_t: underflow; use-after-free.
WARNING: CPU: 25 PID: 32407 at lib/refcount.c:190 refcount_sub_and_test_checked+0x53/0x60
Workqueue: knbd-recv recv_work [nbd]
RIP: 0010:refcount_sub_and_test_checked+0x53/0x60
Call Trace:
 blk_mq_free_request+0xb7/0xf0
 blk_mq_complete_request+0x62/0xf0
 recv_work+0x29/0xa1 [nbd]
 process_one_work+0x1f5/0x3f0
 worker_thread+0x2d/0x3d0
 ? rescuer_thread+0x340/0x340
 kthread+0x111/0x130
 ? kthread_create_on_node+0x60/0x60
 ret_from_fork+0x1f/0x30
---[ end trace b079c3c67f98bb7c ]---

This was preceded by us timing out everything and shutting down the
sockets for the device.  The problem is we had a request in the queue at
the same time, so we completed the request twice.  This can actually
happen in a lot of cases, we fail to get a ref on our config, we only
have one connection and just error out the command, etc.

Fix this by checking cmd->status in nbd_read_stat.  We only change this
under the cmd->lock, so we are safe to check this here and see if we've
already error'ed this command out, which would indicate that we've
completed it as well.

Reviewed-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>

Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-10-25 14:20:03 -06:00
Josef Bacik
de6346ecbc nbd: protect cmd->status with cmd->lock
We already do this for the most part, except in timeout and clear_req.
For the timeout case we take the lock after we grab a ref on the config,
but that isn't really necessary because we're safe to touch the cmd at
this point, so just move the order around.

For the clear_req cause this is initiated by the user, so again is safe.

Reviewed-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-10-25 14:20:01 -06:00
Linus Torvalds
9e2dd2ca85 Merge tag 'modules-for-v5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
Pull modules fixes from Jessica Yu:

 - Revert __ksymtab_$namespace.$symbol naming scheme back to
   __ksymtab_$symbol, as it was causing issues with depmod.

   Instead, have modpost extract a symbol's namespace from __kstrtabns
   and __ksymtab_strings.

 - Fix `make nsdeps` for out of tree kernel builds (make O=...) caused
   by unescaped '/'.

   Use a different sed delimiter to avoid this problem.

* tag 'modules-for-v5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
  scripts/nsdeps: use alternative sed delimiter
  symbol namespaces: revert to previous __ksymtab name scheme
  modpost: make updating the symbol namespace explicit
  modpost: delegate updating namespaces to separate function
2019-10-25 16:11:55 -04:00
Linus Torvalds
63cbb3b364 Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Olof Johansson:
 "A slightly larger set of fixes have accrued in the last two weeks.
  Mostly a collection of the usual smaller fixes:

   - Marvell Armada: USB phy setup issues on Turris Mox

   - Broadcom: GPIO/pinmux DT mapping corrections for Stingray, MMC bus
     width fix for RPi Zero W, GPIO LED removal for RPI CM3. Also some
     maintainer updates.

   - OMAP: Fixlets for display config, interrupt settings for wifi, some
     clock/PM pieces. Also IOMMU regression fix and a ti-sysc
     no-watchdog regression fix.

   - i.MX: A few fixes around PM/settings, some devicetree fixlets and
     catching up with config option changes in DRM

   - Rockchip: RockRro64 misc DT fixups, Hugsun X99 USB-C, Kevin display
     panel settings

  ... and some smaller fixes for Davinci (backlight, McBSP DMA),
  Allwinner (phy regulators, PMU removal on A64, etc)"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (42 commits)
  ARM: dts: stm32: relax qspi pins slew-rate for stm32mp157
  MAINTAINERS: Update the Spreadtrum SoC maintainer
  MAINTAINERS: Remove Gregory and Brian for ARCH_BRCMSTB
  ARM: dts: bcm2837-rpi-cm3: Avoid leds-gpio probing issue
  bus: ti-sysc: Fix watchdog quirk handling
  ARM: OMAP2+: Add pdata for OMAP3 ISP IOMMU
  ARM: OMAP2+: Plug in device_enable/idle ops for IOMMUs
  ARM: davinci_all_defconfig: enable GPIO backlight
  ARM: davinci: dm365: Fix McBSP dma_slave_map entry
  ARM: dts: bcm2835-rpi-zero-w: Fix bus-width of sdhci
  ARM: imx_v6_v7_defconfig: Enable CONFIG_DRM_MSM
  arm64: dts: imx8mn: Use correct clock for usdhc's ipg clk
  arm64: dts: imx8mm: Use correct clock for usdhc's ipg clk
  arm64: dts: imx8mq: Use correct clock for usdhc's ipg clk
  ARM: dts: imx7s: Correct GPT's ipg clock source
  ARM: dts: vf610-zii-scu4-aib: Specify 'i2c-mux-idle-disconnect'
  ARM: dts: imx6q-logicpd: Re-Enable SNVS power key
  arm64: dts: lx2160a: Correct CPU core idle state name
  mailmap: Add Simon Arlott (replacement for expired email address)
  arm64: dts: rockchip: Fix override mode for rk3399-kevin panel
  ...
2019-10-25 16:00:47 -04:00
Linus Torvalds
8c123380b3 Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
 "Bugfixes for ARM, PPC and x86, plus selftest improvements"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: nVMX: Don't leak L1 MMIO regions to L2
  KVM: SVM: Fix potential wrong physical id in avic_handle_ldr_update
  kvm: clear kvmclock MSR on reset
  KVM: x86: fix bugon.cocci warnings
  KVM: VMX: Remove specialized handling of unexpected exit-reasons
  selftests: kvm: fix sync_regs_test with newer gccs
  selftests: kvm: vmx_dirty_log_test: skip the test when VMX is not supported
  selftests: kvm: consolidate VMX support checks
  selftests: kvm: vmx_set_nested_state_test: don't check for VMX support twice
  KVM: Don't shrink/grow vCPU halt_poll_ns if host side polling is disabled
  selftests: kvm: synchronize .gitignore to Makefile
  kvm: x86: Expose RDPID in KVM_GET_SUPPORTED_CPUID
  KVM: arm64: pmu: Reset sample period on overflow handling
  KVM: arm64: pmu: Set the CHAINED attribute before creating the in-kernel event
  arm64: KVM: Handle PMCR_EL0.LC as RES1 on pure AArch64 systems
  KVM: arm64: pmu: Fix cycle counter truncation
  KVM: PPC: Book3S HV: XIVE: Ensure VP isn't already in use
2019-10-25 15:52:05 -04:00
Linus Torvalds
8caacaad78 Merge tag 'drm-fixes-2019-10-25' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
 "Quiet week this week, which I suspect means some people just didn't
  get around to sending me fixes pulls in time. This has 2 komeda and a
  bunch of amdgpu fixes in it:

  komeda:
   - typo fixes
   - flushing pipes fix

  amdgpu:
   - Fix suspend/resume issue related to multi-media engines
   - Fix memory leak in user ptr code related to hmm conversion
   - Fix possible VM faults when allocating page table memory
   - Fix error handling in bo list ioctl"

* tag 'drm-fixes-2019-10-25' of git://anongit.freedesktop.org/drm/drm:
  drm/komeda: Fix typos in komeda_splitter_validate
  drm/komeda: Don't flush inactive pipes
  drm/amdgpu/vce: fix allocation size in enc ring test
  drm/amdgpu: fix error handling in amdgpu_bo_list_create
  drm/amdgpu: fix potential VM faults
  drm/amdgpu: user pages array memory leak fix
  drm/amdgpu/vcn: fix allocation size in enc ring test
  drm/amdgpu/uvd7: fix allocation size in enc ring test (v2)
  drm/amdgpu/uvd6: fix allocation size in enc ring test (v2)
2019-10-25 15:41:14 -04:00
Linus Torvalds
f64928480f Merge tag 'mmc-v5.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
 "MMC host fixes:

   - mxs: Fix flags passed to dmaengine_prep_slave_sg

   - cqhci: Add a missing memory barrier

   - sdhci-omap: Fix tuning procedure for temperatures < -20C"

* tag 'mmc-v5.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: mxs: fix flags passed to dmaengine_prep_slave_sg
  mmc: cqhci: Commit descriptors before setting the doorbell
  mmc: sdhci-omap: Fix Tuning procedure for temperatures < -20C
2019-10-25 15:25:51 -04:00
Jens Axboe
2b2ed9750f io_uring: fix bad inflight accounting for SETUP_IOPOLL|SETUP_SQTHREAD
We currently assume that submissions from the sqthread are successful,
and if IO polling is enabled, we use that value for knowing how many
completions to look for. But if we overflowed the CQ ring or some
requests simply got errored and already completed, they won't be
available for polling.

For the case of IO polling and SQTHREAD usage, look at the pending
poll list. If it ever hits empty then we know that we don't have
anymore pollable requests inflight. For that case, simply reset
the inflight count to zero.

Reported-by: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-10-25 10:58:53 -06:00
Jens Axboe
498ccd9eda io_uring: used cached copies of sq->dropped and cq->overflow
We currently use the ring values directly, but that can lead to issues
if the application is malicious and changes these values on our behalf.
Created in-kernel cached versions of them, and just overwrite the user
side when we update them. This is similar to how we treat the sq/cq
ring tail/head updates.

Reported-by: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-10-25 10:58:45 -06:00
Patrice Chotard
86ec2e1739 ARM: dts: stm32: relax qspi pins slew-rate for stm32mp157
Relax qspi pins slew-rate to minimize peak currents.

Fixes: 8440300573 ("ARM: dts: stm32: add flash nor support on stm32mp157c eval board")

Link: https://lore.kernel.org/r/20191025130122.11407-1-alexandre.torgue@st.com
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2019-10-25 08:18:23 -07:00
Pavel Begunkov
935d1e4590 io_uring: Fix race for sqes with userspace
io_ring_submit() finalises with
1. io_commit_sqring(), which releases sqes to the userspace
2. Then calls to io_queue_link_head(), accessing released head's sqe

Reorder them.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-10-25 09:02:01 -06:00
Pavel Begunkov
fb5ccc9878 io_uring: Fix broken links with offloading
io_sq_thread() processes sqes by 8 without considering links. As a
result, links will be randomely subdivided.

The easiest way to fix it is to call io_get_sqring() inside
io_submit_sqes() as do io_ring_submit().

Downsides:
1. This removes optimisation of not grabbing mm_struct for fixed files
2. It submitting all sqes in one go, without finer-grained sheduling
with cq processing.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-10-25 09:01:59 -06:00
Pavel Begunkov
84d55dc5b9 io_uring: Fix corrupted user_data
There is a bug, where failed linked requests are returned not with
specified @user_data, but with garbage from a kernel stack.

The reason is that io_fail_links() uses req->user_data, which is
uninitialised when called from io_queue_sqe() on fail path.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-10-25 09:01:58 -06:00
Juergen Gross
6ccae60d01 xen: issue deprecation warning for 32-bit pv guest
Support for the kernel as Xen 32-bit PV guest will soon be removed.
Issue a warning when booted as such.

Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
2019-10-25 09:53:18 -04:00
Dave Airlie
2a3608409f Merge tag 'drm-fixes-5.4-2019-10-23' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
drm-fixes-5.4-2019-10-23:

amdgpu:
- Fix suspend/resume issue related to multi-media engines
- Fix memory leak in user ptr code related to hmm conversion
- Fix possible VM faults when allocating page table memory
- Fix error handling in bo list ioctl

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191024031809.3155-1-alexander.deucher@amd.com
2019-10-25 14:48:53 +10:00
Dave Airlie
20975806eb Merge tag 'drm-misc-fixes-2019-10-23' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
Two fixes for komeda, one for typos and one to prevent an hardware issue
when flushing inactive pipes

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191023112643.evpp6f23mpjwdsn4@gilmour
2019-10-25 14:48:21 +10:00
Linus Torvalds
39a38bcba4 Merge tag 'devicetree-fixes-for-5.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull Devicetree fixes from Rob Herring:
 "A couple more DT fixes for 5.4: fix a ref count, memory leak, and
  Risc-V cpu schema warnings"

* tag 'devicetree-fixes-for-5.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  of: reserved_mem: add missing of_node_put() for proper ref-counting
  of: unittest: fix memory leak in unittest_data_add
  dt-bindings: riscv: Fix CPU schema errors
2019-10-24 18:29:40 -04:00
Linus Torvalds
7f65d35416 Merge tag 'acpi-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
 "Fix locking issue in the error code path of a function that belongs to
  the sysfs interface exposed by the ACPI NFIT handling code (Dan
  Carpenter)"

* tag 'acpi-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: NFIT: Fix unlock on error in scrub_show()
2019-10-24 15:49:32 -04:00
Linus Torvalds
5fa2845fd7 Merge tag 'pm-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
 "These fix problems related to frequency limits management in cpufreq
  that were introduced during the 5.3 cycle (when PM QoS had started to
  be used for that), fix a few issues in the OPP (operating performance
  points) library code and fix up the recently added haltpoll cpuidle
  driver.

  The cpufreq changes are somewhat bigger that I would like them to be
  at this stage of the cycle, but the problems fixed by them include
  crashes on boot and shutdown in some cases (among other things) and in
  my view it is better to address the root of the issue right away.

  Specifics:

   - Using device PM QoS of CPU devices for managing frequency limits in
     cpufreq does not work, so introduce frequency QoS (based on the
     original low-level PM QoS) for this purpose, switch cpufreq and
     related code over to using it and fix a race involving deferred
     updates of frequency limits on top of that (Rafael Wysocki, Sudeep
     Holla).

   - Avoid calling regulator_enable()/disable() from the OPP framework
     to avoid side-effects on boot-enabled regulators that may change
     their initial voltage due to performing initial voltage balancing
     without all restrictions from the consumers (Marek Szyprowski).

   - Avoid a kref management issue in the OPP library code and drop an
     incorrectly added lockdep_assert_held() from it (Viresh Kumar).

   - Make the recently added haltpoll cpuidle driver take the 'idle='
     override into account as appropriate (Zhenzhong Duan)"

* tag 'pm-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  opp: Reinitialize the list_kref before adding the static OPPs again
  cpufreq: Cancel policy update work scheduled before freeing
  cpuidle: haltpoll: Take 'idle=' override into account
  opp: core: Revert "add regulators enable and disable"
  PM: QoS: Drop frequency QoS types from device PM QoS
  cpufreq: Use per-policy frequency QoS
  PM: QoS: Introduce frequency QoS
  opp: of: drop incorrect lockdep_assert_held()
2019-10-24 15:36:11 -04:00
Linus Torvalds
65b15b7f4b Merge tag 'gfs2-v5.4-rc4.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
Pull gfs2 fix from Andreas Gruenbacher:
 "Fix a memory leak introduced in -rc1"

* tag 'gfs2-v5.4-rc4.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
  gfs2: Fix memory leak when gfs2meta's fs_context is freed
2019-10-24 15:31:55 -04:00
Alain Volmat
348e46fbb4 i2c: stm32f7: remove warning when compiling with W=1
Remove the following warning:

drivers/i2c/busses/i2c-stm32f7.c:315:
warning: cannot understand function prototype:
'struct stm32f7_i2c_spec i2c_specs[] =

Replace a comment starting with /** by simply /* to avoid having
it interpreted as a kernel-doc comment.

Fixes: aeb068c572 ("i2c: i2c-stm32f7: add driver")
Signed-off-by: Alain Volmat <alain.volmat@st.com>
Reviewed-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-10-24 20:52:21 +02:00
Fabrice Gasnier
6d6b0d0d5a i2c: stm32f7: fix a race in slave mode with arbitration loss irq
When in slave mode, an arbitration loss (ARLO) may be detected before the
slave had a chance to detect the stop condition (STOPF in ISR).
This is seen when two master + slave adapters switch their roles. It
provokes the i2c bus to be stuck, busy as SCL line is stretched.
- the I2C_SLAVE_STOP event is never generated due to STOPF flag is set but
  don't generate an irq (race with ARLO irq, STOPIE is masked). STOPF flag
  remains set until next master xfer (e.g. when STOPIE irq get unmasked).
  In this case, completion is generated too early: immediately upon new
  transfer request (then it doesn't send all data).
- Some data get stuck in TXDR register. As a consequence, the controller
  stretches the SCL line: the bus gets busy until a future master transfer
  triggers the bus busy / recovery mechanism (this can take time... and
  may never happen at all)

So choice is to let the STOPF being detected by the slave isr handler,
to properly handle this stop condition. E.g. don't mask IRQs in error
handler, when the slave is running.

Fixes: 60d609f30d ("i2c: i2c-stm32f7: Add slave support")
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Reviewed-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-10-24 20:52:17 +02:00
Fabrice Gasnier
02e64276c6 i2c: stm32f7: fix first byte to send in slave mode
The slave-interface documentation [1] states "the bus driver should
transmit the first byte" upon I2C_SLAVE_READ_REQUESTED slave event:
- 'val': backend returns first byte to be sent
The driver currently ignores the 1st byte to send on this event.

[1] https://www.kernel.org/doc/Documentation/i2c/slave-interface

Fixes: 60d609f30d ("i2c: i2c-stm32f7: Add slave support")
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Reviewed-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-10-24 20:52:17 +02:00
Fabien Parent
62931ac2f9 i2c: mt65xx: fix NULL ptr dereference
Since commit abf4923e97 ("i2c: mediatek: disable zero-length transfers
for mt8183"), there is a NULL pointer dereference for all the SoCs
that don't have any quirk. mtk_i2c_functionality is not checking that
the quirks pointer is not NULL before starting to use it.

This commit add a call to i2c_check_quirks which will check whether
the quirks pointer is set, and if so will check if the IP has the
NO_ZERO_LEN quirk.

Fixes: abf4923e97 ("i2c: mediatek: disable zero-length transfers for mt8183")
Signed-off-by: Fabien Parent <fparent@baylibre.com>
Reviewed-by: Cengiz Can <cengiz@kernel.wtf>
Reviewed-by: Hsin-Yi Wang <hsinyi@chromium.org>
Tested-by: Ulrich Hecht <uli@fpond.eu>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-10-24 20:52:11 +02:00
Andrew Price
30aecae86e gfs2: Fix memory leak when gfs2meta's fs_context is freed
gfs2 and gfs2meta share an ->init_fs_context function which allocates an
args structure stored in fc->fs_private. gfs2 registers a ->free
function to free this memory when the fs_context is cleaned up, but
there was not one registered for gfs2meta, causing a leak.

Register a ->free function for gfs2meta. The existing gfs2_fc_free
function does what we need.

Reported-by: syzbot+c2fdfd2b783754878fb6@syzkaller.appspotmail.com
Fixes: 1f52aa08d1 ("gfs2: Convert gfs2 to fs_context")
Signed-off-by: Andrew Price <anprice@redhat.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2019-10-24 16:20:43 +02:00
Rafael J. Wysocki
767d2d710e Merge branches 'pm-cpuidle' and 'pm-opp'
* pm-cpuidle:
  cpuidle: haltpoll: Take 'idle=' override into account

* pm-opp:
  opp: Reinitialize the list_kref before adding the static OPPs again
  opp: core: Revert "add regulators enable and disable"
  opp: of: drop incorrect lockdep_assert_held()
2019-10-24 16:00:43 +02:00
Linus Torvalds
f116b96685 Merge tag 'mfd-fixes-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD fix from Lee Jones:
 "Fix broken support for BananaPi-r2"

* tag 'mfd-fixes-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
  mfd: mt6397: Fix probe after changing mt6397-core
2019-10-24 06:13:45 -04:00
Linus Torvalds
f632bfaa33 Merge tag 'sound-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
 "This is a usual small bump in the middle, we've got a set of ASoC
  fixes in this week as shown in diffstat.

  The only change in the core stuff is about (somewhat minor) PCM
  debugfs error handling. The major changes are rather for Intel SOF and
  topology coverage, as well as other platform (rockchip, samsung, stm)
  and codec fixes.

  As non-ASoC changes, a couple of new HD-audio chip fixes and a typo
  correction of USB-audio driver validation code are found"

* tag 'sound-5.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (29 commits)
  ALSA: hda: Add Tigerlake/Jasperlake PCI ID
  ALSA: usb-audio: Fix copy&paste error in the validator
  ALSA: hda/realtek - Add support for ALC711
  ASoC: SOF: control: return true when kcontrol values change
  ASoC: stm32: sai: fix sysclk management on shutdown
  ASoC: Intel: sof-rt5682: add a check for devm_clk_get
  ASoC: rsnd: Reinitialize bit clock inversion flag for every format setting
  ASoC: simple_card_utils.h: Fix potential multiple redefinition error
  ASoC: msm8916-wcd-digital: add missing MIX2 path for RX1/2
  ASoC: core: Fix pcm code debugfs error
  ASoc: rockchip: i2s: Fix RPM imbalance
  ASoC: wm_adsp: Don't generate kcontrols without READ flags
  ASoC: intel: bytcr_rt5651: add null check to support_button_press
  ASoC: intel: sof_rt5682: add remove function to disable jack
  ASoC: rt5682: add NULL handler to set_jack function
  ASoC: intel: sof_rt5682: use separate route map for dmic
  ASoC: SOF: Intel: hda: Disable DMI L1 entry during capture
  ASoC: SOF: Intel: initialise and verify FW crash dump data.
  ASoC: SOF: Intel: hda: fix warnings during FW load
  ASoC: SOF: pcm: harden PCM STOP sequence
  ...
2019-10-24 06:09:42 -04:00
Frank Wunderlich
603d9299da mfd: mt6397: Fix probe after changing mt6397-core
Part 3 from this series [1] was not merged due to wrong splitting
and breaks mt6323 pmic on bananapi-r2

dmesg prints this line and at least switch is not initialized on bananapi-r2

mt6397 1000d000.pwrap:mt6323: unsupported chip: 0x0

this patch contains only the probe-changes and chip_data structs
from original part 3 by Hsin-Hsiung Wang

[1] https://patchwork.kernel.org/project/linux-mediatek/list/?series=164155

Fixes: a4872e80ce ("mfd: mt6397: Extract IRQ related code from core driver")
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2019-10-24 08:49:25 +01:00
zhangyi (F)
a1f58ba46f io_uring: correct timeout req sequence when inserting a new entry
The sequence number of the timeout req (req->sequence) indicate the
expected completion request. Because of each timeout req consume a
sequence number, so the sequence of each timeout req on the timeout
list shouldn't be the same. But now, we may get the same number (also
incorrect) if we insert a new entry before the last one, such as submit
such two timeout reqs on a new ring instance below.

                    req->sequence
 req_1 (count = 2):       2
 req_2 (count = 1):       2

Then, if we submit a nop req, req_2 will still timeout even the nop req
finished. This patch fix this problem by adjust the sequence number of
each reordered reqs when inserting a new entry.

Signed-off-by: zhangyi (F) <yi.zhang@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-10-23 22:09:56 -06:00
zhangyi (F)
ef03681ae8 io_uring : correct timeout req sequence when waiting timeout
The sequence number of reqs on the timeout_list before the timeout req
should be adjusted in io_timeout_fn(), because the current timeout req
will consumes a slot in the cq_ring and cq_tail pointer will be
increased, otherwise other timeout reqs may return in advance without
waiting for enough wait_nr.

Signed-off-by: zhangyi (F) <yi.zhang@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-10-23 22:09:56 -06:00
Jens Axboe
bc808bced3 io_uring: revert "io_uring: optimize submit_and_wait API"
There are cases where it isn't always safe to block for submission,
even if the caller asked to wait for events as well. Revert the
previous optimization of doing that.

This reverts two commits:

bf7ec93c64
c576666863

Fixes: c576666863 ("io_uring: optimize submit_and_wait API")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-10-23 22:09:56 -06:00
Olof Johansson
116c05bfa1 Merge tag 'arm-soc/for-5.5/maintainers' of https://github.com/Broadcom/stblinux into arm/fixes
This pull request contains MAINTAINERS file updates for Broadcom SoCs
for the 5.5 kernel, please pull the following:

- Simon adds a .mailmap alias for his old email

- Stefan updates the existing BCM2835 with BCM2711 which is the chip
  name for the Raspberry Pi 4

- Florian removes Gregory and Brian from the MAINTAINERS file for
  BRCMSTB SoCs

* tag 'arm-soc/for-5.5/maintainers' of https://github.com/Broadcom/stblinux:
  MAINTAINERS: Remove Gregory and Brian for ARCH_BRCMSTB
  mailmap: Add Simon Arlott (replacement for expired email address)
  MAINTAINERS: Add BCM2711 to BCM2835 ARCH

Link: https://lore.kernel.org/r/20191023212814.30622-3-f.fainelli@gmail.com
Signed-off-by: Olof Johansson <olof@lixom.net>
2019-10-23 20:01:25 -07:00
Baolin Wang
d4267a57d3 MAINTAINERS: Update the Spreadtrum SoC maintainer
Change my email address, and add more Spreadtrum SC27xx series PMIC
drivers to maintain.

Link: https://lore.kernel.org/r/a48483d13243450ecf3b777d49e741b6367f2c6b.1571881956.git.baolin.wang@linaro.org
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
2019-10-23 19:59:20 -07:00
Chris Goldsworthy
5dba51754b of: reserved_mem: add missing of_node_put() for proper ref-counting
Commit d698a38814 ("of: reserved-memory: ignore disabled memory-region
nodes") added an early return in of_reserved_mem_device_init_by_idx(), but
didn't call of_node_put() on a device_node whose ref-count was incremented
in the call to of_parse_phandle() preceding the early exit.

Fixes: d698a38814 ("of: reserved-memory: ignore disabled memory-region nodes")
Signed-off-by: Chris Goldsworthy <cgoldswo@codeaurora.org>
Cc: stable@vger.kernel.org
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
2019-10-23 15:15:05 -05:00
Linus Torvalds
fa8a74de06 Merge tag 'trace-v5.4-rc3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
 "Two minor fixes:

   - A race in perf trace initialization (missing mutexes)

   - Minor fix to represent gfp_t in synthetic events as properly
     signed"

* tag 'trace-v5.4-rc3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Fix race in perf_trace_buf initialization
  tracing: Fix "gfp_t" format for synthetic events
2019-10-23 15:43:51 -04:00
Navid Emamdoost
e13de8fe0d of: unittest: fix memory leak in unittest_data_add
In unittest_data_add, a copy buffer is created via kmemdup. This buffer
is leaked if of_fdt_unflatten_tree fails. The release for the
unittest_data buffer is added.

Fixes: b951f9dc7f ("Enabling OF selftest to run without machine's devicetree")
Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Reviewed-by: Frank Rowand <frowand.list@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2019-10-23 14:42:44 -05:00
Rob Herring
9af865d95b dt-bindings: riscv: Fix CPU schema errors
Fix the errors in the RiscV CPU DT schema:

Documentation/devicetree/bindings/riscv/cpus.example.dt.yaml: cpu@0: 'timebase-frequency' is a required property
Documentation/devicetree/bindings/riscv/cpus.example.dt.yaml: cpu@1: 'timebase-frequency' is a required property
Documentation/devicetree/bindings/riscv/cpus.example.dt.yaml: cpu@0: compatible:0: 'riscv' is not one of ['sifive,rocket0', 'sifive,e5', 'sifive,e51', 'sifive,u54-mc', 'sifive,u54', 'sifive,u5']
Documentation/devicetree/bindings/riscv/cpus.example.dt.yaml: cpu@0: compatible: ['riscv'] is too short
Documentation/devicetree/bindings/riscv/cpus.example.dt.yaml: cpu@0: 'timebase-frequency' is a required property

The DT spec allows for 'timebase-frequency' to be in 'cpu' or 'cpus' node
and RiscV requires it in /cpus node, so make it disallowed in cpu
nodes.

Fixes: 4fd669a8c4 ("dt-bindings: riscv: convert cpu binding to json-schema")
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: linux-riscv@lists.infradead.org
Acked-by: Paul Walmsley <paul.walmsley@sifive.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2019-10-23 14:42:44 -05:00
Linus Torvalds
64131618e8 Merge tag 'vfio-v5.4-rc5' of git://github.com/awilliam/linux-vfio
Pull VFIO fixlet from Alex Williamson:
 "Fix (false) uninitialized variable warning (Joerg Roedel)"

* tag 'vfio-v5.4-rc5' of git://github.com/awilliam/linux-vfio:
  vfio/type1: Initialize resv_msi_base
2019-10-23 15:39:02 -04:00
Linus Torvalds
deed1d4469 Merge tag 'regulator-fix-v5.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
 "There are a few core fixes here around error handling and handling if
  suspend mode configuration and some driver specific fixes here but the
  most important change is the fix to the fixed-regulator DT schema
  conversion introduced during the last merge window.

  That fixes one of the last two errors preventing successful execution
  of "make dt_binding_check" which will be enormously helpful for DT
  schema development"

* tag 'regulator-fix-v5.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: qcom-rpmh: Fix PMIC5 BoB min voltage
  regulator: pfuze100-regulator: Variable "val" in pfuze100_regulator_probe() could be uninitialized
  regulator: lochnagar: Add on_off_delay for VDDCORE
  regulator: ti-abb: Fix timeout in ti_abb_wait_txdone/ti_abb_clear_all_txdone
  regulator: da9062: fix suspend_enable/disable preparation
  dt-bindings: fixed-regulator: fix compatible enum
  regulator: fixed: Prevent NULL pointer dereference when !CONFIG_OF
  regulator: core: make regulator_register() EPROBE_DEFER aware
  regulator: of: fix suspend-min/max-voltage parsing
2019-10-23 15:31:17 -04:00