1. 13 Oct, 2020 4 commits
  2. 04 Oct, 2020 1 commit
  3. 03 Oct, 2020 10 commits
  4. 02 Oct, 2020 16 commits
    • Linus Torvalds's avatar
      Merge tag 'pinctrl-v5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl · d3d45f82
      Linus Torvalds authored
      Pull pin control fixes from Linus Walleij:
       "Some pin control fixes here. All of them are driver fixes, the Intel
        Cherryview being the most interesting one.
      
         - Fix a mux problem for I2C in the MVEBU driver.
      
         - Fix a really hairy inversion problem in the Intel Cherryview
           driver.
      
         - Fix the register for the sdc2_clk in the Qualcomm SM8250 driver.
      
         - Check the virtual GPIO boot failur in the Mediatek driver"
      
      * tag 'pinctrl-v5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
        pinctrl: mediatek: check mtk_is_virt_gpio input parameter
        pinctrl: qcom: sm8250: correct sdc2_clk
        pinctrl: cherryview: Preserve CHV_PADCTRL1_INVRXTX_TXDATA flag on GPIOs
        pinctrl: mvebu: Fix i2c sda definition for 98DX3236
      d3d45f82
    • Linus Torvalds's avatar
      Merge tag 'pci-v5.9-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci · 4d9c3a68
      Linus Torvalds authored
      Pull PCI fixes from Bjorn Helgaas:
      
       - Fix rockchip regression in rockchip_pcie_valid_device() (Lorenzo
         Pieralisi)
      
       - Add Pali Rohár as aardvark PCI maintainer (Pali Rohár)
      
      * tag 'pci-v5.9-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
        MAINTAINERS: Add Pali Rohár as aardvark PCI maintainer
        PCI: rockchip: Fix bus checks in rockchip_pcie_valid_device()
      4d9c3a68
    • Linus Torvalds's avatar
      Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · cb6f55af
      Linus Torvalds authored
      Pull SCSI fixes from James Bottomley:
       "Two patches in driver frameworks. The iscsi one corrects a bug induced
        by a BPF change to network locking and the other is a regression we
        introduced"
      
      * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
        scsi: iscsi: iscsi_tcp: Avoid holding spinlock while calling getpeername()
        scsi: target: Fix lun lookup for TARGET_SCF_LOOKUP_LUN_FROM_TAG case
      cb6f55af
    • Linus Torvalds's avatar
      Merge tag 'io_uring-5.9-2020-10-02' of git://git.kernel.dk/linux-block · 702bfc89
      Linus Torvalds authored
      Pull io_uring fixes from Jens Axboe:
      
       - fix for async buffered reads if read-ahead is fully disabled (Hao)
      
       - double poll match fix
      
       - ->show_fdinfo() potential ABBA deadlock complaint fix
      
      * tag 'io_uring-5.9-2020-10-02' of git://git.kernel.dk/linux-block:
        io_uring: fix async buffered reads when readahead is disabled
        io_uring: fix potential ABBA deadlock in ->show_fdinfo()
        io_uring: always delete double poll wait entry on match
      702bfc89
    • Linus Torvalds's avatar
      Merge tag 'block-5.9-2020-10-02' of git://git.kernel.dk/linux-block · f016a540
      Linus Torvalds authored
      Pull block fix from Jens Axboe:
       "Single fix for a ->commit_rqs failure case"
      
      * tag 'block-5.9-2020-10-02' of git://git.kernel.dk/linux-block:
        blk-mq: call commit_rqs while list empty but error happen
      f016a540
    • Linus Torvalds's avatar
      Merge branch 'work.epoll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs · d4fce2e2
      Linus Torvalds authored
      Pull epoll fixes from Al Viro:
       "Several race fixes in epoll"
      
      * 'work.epoll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
        ep_create_wakeup_source(): dentry name can change under you...
        epoll: EPOLL_CTL_ADD: close the race in decision to take fast path
        epoll: replace ->visited/visited_list with generation count
        epoll: do not insert into poll queues until all sanity checks are done
      d4fce2e2
    • Linus Torvalds's avatar
      Merge tag 'riscv-for-linus-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux · db23baa2
      Linus Torvalds authored
      Pull RISC-V fixes from Palmer Dabbelt:
       "Two fixes for this week:
      
         - The addition of a symbol export for clint_time_val, which has been
           inlined into some timex functions and can be used by drivers.
      
         - A fix to avoid calling get_cycles() before the timers have been
           probed.
      
        These both only effect !MMU systems"
      
      * tag 'riscv-for-linus-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
        RISC-V: Check clint_time_val before use
        clocksource: clint: Export clint_time_val for modules
      db23baa2
    • Linus Torvalds's avatar
      Merge tag 'for-5.9-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux · 4e3b9ce2
      Linus Torvalds authored
      Pull btrfs fixes from David Sterba:
       "Two more fixes.
      
        One is for a lockdep warning/lockup (also caught by syzbot), that one
        has been seen in practice. Regarding the other syzbot reports
        mentioned last time, they don't seem to be urgent and reliably
        reproducible so they'll be fixed later.
      
        The second fix is for a potential corruption when device replace
        finishes and the in-memory state of trim is not copied to the new
        device"
      
      * tag 'for-5.9-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
        btrfs: fix filesystem corruption after a device replace
        btrfs: move btrfs_rm_dev_replace_free_srcdev outside of all locks
        btrfs: move btrfs_scratch_superblocks into btrfs_dev_replace_finishing
      4e3b9ce2
    • Linus Torvalds's avatar
      Merge tag 'pm-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · c5130911
      Linus Torvalds authored
      Pull power management fixes from Rafael Wysocki:
       "These fix one more issue related to the recent RCU-lockdep changes, a
        typo in documentation and add a missing return statement to
        intel_pstate.
      
        Specifics:
      
         - Fix up RCU usage for cpuidle on the ARM imx6q platform (Ulf
           Hansson)
      
         - Fix typo in the PM documentation (Yoann Congal)
      
         - Add return statement that is missing after recent changes in the
           intel_pstate driver (Zhang Rui)"
      
      * tag 'pm-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        ARM: imx6q: Fixup RCU usage for cpuidle
        Documentation: PM: Fix a reStructuredText syntax error
        cpufreq: intel_pstate: Fix missing return statement
      c5130911
    • Linus Torvalds's avatar
      Merge tag 'staging-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging · cc8ad8fa
      Linus Torvalds authored
      Pull IIO fixes from Greg KH:
       "Here are two small IIO driver fixes for 5.9-rc8 that resolve some
        reported issues:
      
         - driver name fixed in one driver
      
         - device name typo fixed
      
        Both have been in linux-next for a while with no reported problems"
      
      * tag 'staging-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
        iio: adc: qcom-spmi-adc5: fix driver name
        iio: adc: ad7124: Fix typo in device name
      cc8ad8fa
    • Linus Torvalds's avatar
      Merge tag 'gpio-v5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio · 0bf0dfda
      Linus Torvalds authored
      Pull GPIO fixes from Linus Walleij:
       "Some late GPIO fixes for the v5.9 series:
      
         - Fix compiler warnings on the OMAP when PM is disabled
      
         - Clear the interrupt when setting edge sensitivity on the Spreadtrum
           driver.
      
         - Fix up spurious interrupts on the TC35894.
      
         - Support threaded interrupts on the Siox controller.
      
         - Fix resource leaks on the mockup driver.
      
         - Fix line event handling in syscall compatible mode for the
           character device.
      
         - Fix an unitialized variable in the PCA953A driver.
      
         - Fix access to all GPIO IRQs on the Aspeed AST2600.
      
         - Fix line direction on the AMD FCH driver.
      
         - Use the bitmap API instead of compiler intrinsics for bit
           manipulation in the PCA953x driver"
      
      * tag 'gpio-v5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
        gpio: pca953x: Correctly initialize registers 6 and 7 for PCA957x
        gpio: pca953x: Use bitmap API over implicit GCC extension
        gpio: amd-fch: correct logic of GPIO_LINE_DIRECTION
        gpio: aspeed: fix ast2600 bank properties
        gpio/aspeed-sgpio: don't enable all interrupts by default
        gpio/aspeed-sgpio: enable access to all 80 input & output sgpios
        gpio: pca953x: Fix uninitialized pending variable
        gpiolib: Fix line event handling in syscall compatible mode
        gpio: mockup: fix resource leak in error path
        gpio: siox: explicitly support only threaded irqs
        gpio: tc35894: fix up tc35894 interrupt configuration
        gpio: sprd: Clear interrupt when setting the type as edge
        gpio: omap: Fix warnings if PM is disabled
      0bf0dfda
    • Linus Torvalds's avatar
      Merge tag 'mmc-v5.9-rc4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc · 2270b890
      Linus Torvalds authored
      Pull MMC fixes from Ulf Hansson:
      
       - Fix deadlock when removing MEMSTICK host
      
       - Workaround broken CMDQ on Intel GLK based IRBIS models
      
      * tag 'mmc-v5.9-rc4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
        mmc: sdhci: Workaround broken command queuing on Intel GLK based IRBIS models
        memstick: Skip allocating card when removing host
      2270b890
    • Thibaut Sautereau's avatar
      random32: Restore __latent_entropy attribute on net_rand_state · 09a6b0bc
      Thibaut Sautereau authored
      Commit f227e3ec ("random32: update the net random state on interrupt
      and activity") broke compilation and was temporarily fixed by Linus in
      83bdc727 ("random32: remove net_rand_state from the latent entropy
      gcc plugin") by entirely moving net_rand_state out of the things handled
      by the latent_entropy GCC plugin.
      
      From what I understand when reading the plugin code, using the
      __latent_entropy attribute on a declaration was the wrong part and
      simply keeping the __latent_entropy attribute on the variable definition
      was the correct fix.
      
      Fixes: 83bdc727 ("random32: remove net_rand_state from the latent entropy gcc plugin")
      Acked-by: default avatarWilly Tarreau <w@1wt.eu>
      Cc: Emese Revfy <re.emese@gmail.com>
      Signed-off-by: default avatarThibaut Sautereau <thibaut.sautereau@ssi.gouv.fr>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      09a6b0bc
    • Rafael J. Wysocki's avatar
      Merge branch 'pm-cpufreq' · 7bbe8f2a
      Rafael J. Wysocki authored
      * pm-cpufreq:
        cpufreq: intel_pstate: Fix missing return statement
      7bbe8f2a
    • Roman Gushchin's avatar
      mm: memcg/slab: fix slab statistics in !SMP configuration · be458311
      Roman Gushchin authored
      Since commit ea426c2a ("mm: memcg: prepare for byte-sized vmstat
      items") the write side of slab counters accepts a value in bytes and
      converts it to pages.  It happens in __mod_node_page_state().
      
      However a non-SMP version of __mod_node_page_state() doesn't perform
      this conversion.  It leads to incorrect (unrealistically high) slab
      counters values.  Fix this by adding a similar conversion to the non-SMP
      version of __mod_node_page_state().
      Signed-off-by: default avatarRoman Gushchin <guro@fb.com>
      Reported-and-tested-by: default avatarBastian Bittorf <bb@npl.de>
      Fixes: ea426c2a ("mm: memcg: prepare for byte-sized vmstat items")
      Acked-by: default avatarVlastimil Babka <vbabka@suse.cz>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      be458311
    • Linus Torvalds's avatar
      pipe: remove pipe_wait() and fix wakeup race with splice · 472e5b05
      Linus Torvalds authored
      The pipe splice code still used the old model of waiting for pipe IO by
      using a non-specific "pipe_wait()" that waited for any pipe event to
      happen, which depended on all pipe IO being entirely serialized by the
      pipe lock.  So by checking the state you were waiting for, and then
      adding yourself to the wait queue before dropping the lock, you were
      guaranteed to see all the wakeups.
      
      Strictly speaking, the actual wakeups were not done under the lock, but
      the pipe_wait() model still worked, because since the waiter held the
      lock when checking whether it should sleep, it would always see the
      current state, and the wakeup was always done after updating the state.
      
      However, commit 0ddad21d ("pipe: use exclusive waits when reading or
      writing") split the single wait-queue into two, and in the process also
      made the "wait for event" code wait for _two_ wait queues, and that then
      showed a race with the wakers that were not serialized by the pipe lock.
      
      It's only splice that used that "pipe_wait()" model, so the problem
      wasn't obvious, but Josef Bacik reports:
      
       "I hit a hang with fstest btrfs/187, which does a btrfs send into
        /dev/null. This works by creating a pipe, the write side is given to
        the kernel to write into, and the read side is handed to a thread that
        splices into a file, in this case /dev/null.
      
        The box that was hung had the write side stuck here [pipe_write] and
        the read side stuck here [splice_from_pipe_next -> pipe_wait].
      
        [ more details about pipe_wait() scenario ]
      
        The problem is we're doing the prepare_to_wait, which sets our state
        each time, however we can be woken up either with reads or writes. In
        the case above we race with the WRITER waking us up, and re-set our
        state to INTERRUPTIBLE, and thus never break out of schedule"
      
      Josef had a patch that avoided the issue in pipe_wait() by just making
      it set the state only once, but the deeper problem is that pipe_wait()
      depends on a level of synchonization by the pipe mutex that it really
      shouldn't.  And the whole "wait for any pipe state change" model really
      isn't very good to begin with.
      
      So rather than trying to work around things in pipe_wait(), remove that
      legacy model of "wait for arbitrary pipe event" entirely, and actually
      create functions that wait for the pipe actually being readable or
      writable, and can do so without depending on the pipe lock serializing
      everything.
      
      Fixes: 0ddad21d ("pipe: use exclusive waits when reading or writing")
      Link: https://lore.kernel.org/linux-fsdevel/bfa88b5ad6f069b2b679316b9e495a970130416c.1601567868.git.josef@toxicpanda.com/Reported-by: default avatarJosef Bacik <josef@toxicpanda.com>
      Reviewed-and-tested-by: default avatarJosef Bacik <josef@toxicpanda.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      472e5b05
  5. 01 Oct, 2020 9 commits
    • Linus Torvalds's avatar
      Merge tag 'iommu-fixes-v5.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu · 44b6e23b
      Linus Torvalds authored
      Pull iommu fixes from Joerg Roedel:
      
       - Fix a device reference counting bug in the Exynos IOMMU driver.
      
       - Lockdep fix for the Intel VT-d driver.
      
       - Fix a bug in the AMD IOMMU driver which caused corruption of the IVRS
         ACPI table and caused IOMMU driver initialization failures in kdump
         kernels.
      
      * tag 'iommu-fixes-v5.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
        iommu/vt-d: Fix lockdep splat in iommu_flush_dev_iotlb()
        iommu/amd: Fix the overwritten field in IVMD header
        iommu/exynos: add missing put_device() call in exynos_iommu_of_xlate()
      44b6e23b
    • Linus Torvalds's avatar
      Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux · eed2ef44
      Linus Torvalds authored
      Pull arm64 fix from Catalin Marinas:
       "A previous commit to prevent AML memory opregions from accessing the
        kernel memory turned out to be too restrictive. Relax the permission
        check to permit the ACPI core to map kernel memory used for table
        overrides"
      
      * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
        arm64: permit ACPI core to map kernel memory used for table overrides
      eed2ef44
    • Linus Torvalds's avatar
      Merge tag 'drm-fixes-2020-10-01-1' of git://anongit.freedesktop.org/drm/drm · fcadab74
      Linus Torvalds authored
      Pull drm fixes from Dave Airlie:
       "AMD and vmwgfx fixes.
      
        Just dequeuing these a bit early as the AMD ones are bit larger than
        I'd prefer, but Alex missed last week so it's a double set of fixes.
        The larger ones are just register header fixes for the new chips that
        were just introduced in rc1 along with some new PCI IDs for new hw.
        Otherwise it is usual fixes.
      
        The vmwgfx fix was due to some testing I was doing and found we
        weren't booting properly, vmware had the fix internally so hurried it
      
        vmwgfx:
         - fix a regression due to TTM refactor
      
        amdgpu:
         - Fix potential double free in userptr handling
         - Sienna Cichlid and Navy Flounder udpates
         - Add Sienna Cichlid PCI IDs
         - Drop experimental flag for navi12
         - Raven fixes
         - Renoir fixes
         - HDCP fix
         - DCN3 fix for clang and older versions of gcc
         - Fix a runtime pm refcount issue"
      
      * tag 'drm-fixes-2020-10-01-1' of git://anongit.freedesktop.org/drm/drm:
        drm/amdgpu: disable gfxoff temporarily for navy_flounder
        drm/amd/pm: setup APU dpm clock table in SMU HW initialization
        drm/vmwgfx: Fix error handling in get_node
        drm/amd/display: remove duplicate call to rn_vbios_smu_get_smu_version()
        drm/amdgpu/swsmu/smu12: fix force clock handling for mclk
        drm/amdgpu: restore proper ref count in amdgpu_display_crtc_set_config
        drm/amdgpu/display: fix CFLAGS setup for DCN30
        drm/amd/display: fix return value check for hdcp_work
        drm/amdgpu: remove gpu_info fw support for sienna_cichlid etc.
        drm/amd/pm: Removed fixed clock in auto mode DPM
        drm/amdgpu: remove experimental flag from navi12
        drm/amdgpu: add device ID for sienna_cichlid (v2)
        drm/amdgpu: use the AV1 defines for VCN 3.0
        drm/amdgpu: add VCN 3.0 AV1 registers
        drm/amdgpu: add the GC 10.3 VRS registers
        drm/amdgpu: prevent double kfree ttm->sg
      fcadab74
    • Linus Torvalds's avatar
      Merge tag 'trace-v5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace · aa5ff935
      Linus Torvalds authored
      Pull tracing fixes from Steven Rostedt:
       "Two tracing fixes:
      
         - Fix temp buffer accounting that caused a WARNING for
           ftrace_dump_on_opps()
      
         - Move the recursion check in one of the function callback helpers to
           the beginning of the function, as if the rcu_is_watching() gets
           traced, it will cause a recursive loop that will crash the kernel"
      
      * tag 'trace-v5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
        ftrace: Move RCU is watching check after recursion check
        tracing: Fix trace_find_next_entry() accounting of temp buffer size
      aa5ff935
    • Lu Baolu's avatar
      iommu/vt-d: Fix lockdep splat in iommu_flush_dev_iotlb() · 1a3f2fd7
      Lu Baolu authored
      Lock(&iommu->lock) without disabling irq causes lockdep warnings.
      
      [   12.703950] ========================================================
      [   12.703962] WARNING: possible irq lock inversion dependency detected
      [   12.703975] 5.9.0-rc6+ #659 Not tainted
      [   12.703983] --------------------------------------------------------
      [   12.703995] systemd-udevd/284 just changed the state of lock:
      [   12.704007] ffffffffbd6ff4d8 (device_domain_lock){..-.}-{2:2}, at:
                     iommu_flush_dev_iotlb.part.57+0x2e/0x90
      [   12.704031] but this lock took another, SOFTIRQ-unsafe lock in the past:
      [   12.704043]  (&iommu->lock){+.+.}-{2:2}
      [   12.704045]
      
                     and interrupts could create inverse lock ordering between
                     them.
      
      [   12.704073]
                     other info that might help us debug this:
      [   12.704085]  Possible interrupt unsafe locking scenario:
      
      [   12.704097]        CPU0                    CPU1
      [   12.704106]        ----                    ----
      [   12.704115]   lock(&iommu->lock);
      [   12.704123]                                local_irq_disable();
      [   12.704134]                                lock(device_domain_lock);
      [   12.704146]                                lock(&iommu->lock);
      [   12.704158]   <Interrupt>
      [   12.704164]     lock(device_domain_lock);
      [   12.704174]
                      *** DEADLOCK ***
      Signed-off-by: default avatarLu Baolu <baolu.lu@linux.intel.com>
      Link: https://lore.kernel.org/r/20200927062428.13713-1-baolu.lu@linux.intel.comSigned-off-by: default avatarJoerg Roedel <jroedel@suse.de>
      1a3f2fd7
    • Juergen Gross's avatar
      xen/events: don't use chip_data for legacy IRQs · 0891fb39
      Juergen Gross authored
      Since commit c330fb1d ("XEN uses irqdesc::irq_data_common::handler_data to store a per interrupt XEN data pointer which contains XEN specific information.")
      Xen is using the chip_data pointer for storing IRQ specific data. When
      running as a HVM domain this can result in problems for legacy IRQs, as
      those might use chip_data for their own purposes.
      
      Use a local array for this purpose in case of legacy IRQs, avoiding the
      double use.
      
      Cc: stable@vger.kernel.org
      Fixes: c330fb1d ("XEN uses irqdesc::irq_data_common::handler_data to store a per interrupt XEN data pointer which contains XEN specific information.")
      Signed-off-by: default avatarJuergen Gross <jgross@suse.com>
      Tested-by: default avatarStefan Bader <stefan.bader@canonical.com>
      Reviewed-by: default avatarBoris Ostrovsky <boris.ostrovsky@oracle.com>
      Link: https://lore.kernel.org/r/20200930091614.13660-1-jgross@suse.comSigned-off-by: default avatarJuergen Gross <jgross@suse.com>
      0891fb39
    • Adrian Huang's avatar
      iommu/amd: Fix the overwritten field in IVMD header · 0bbe4ced
      Adrian Huang authored
      Commit 387caf0b ("iommu/amd: Treat per-device exclusion
      ranges as r/w unity-mapped regions") accidentally overwrites
      the 'flags' field in IVMD (struct ivmd_header) when the I/O
      virtualization memory definition is associated with the
      exclusion range entry. This leads to the corrupted IVMD table
      (incorrect checksum). The kdump kernel reports the invalid checksum:
      
      ACPI BIOS Warning (bug): Incorrect checksum in table [IVRS] - 0x5C, should be 0x60 (20200717/tbprint-177)
      AMD-Vi: [Firmware Bug]: IVRS invalid checksum
      
      Fix the above-mentioned issue by modifying the 'struct unity_map_entry'
      member instead of the IVMD header.
      
      Cleanup: The *exclusion_range* functions are not used anymore, so
      get rid of them.
      
      Fixes: 387caf0b ("iommu/amd: Treat per-device exclusion ranges as r/w unity-mapped regions")
      Reported-and-tested-by: default avatarBaoquan He <bhe@redhat.com>
      Signed-off-by: default avatarAdrian Huang <ahuang12@lenovo.com>
      Cc: Jerry Snitselaar <jsnitsel@redhat.com>
      Link: https://lore.kernel.org/r/20200926102602.19177-1-adrianhuang0701@gmail.comSigned-off-by: default avatarJoerg Roedel <jroedel@suse.de>
      0bbe4ced
    • Marc Zyngier's avatar
      KVM: arm64: Restore missing ISB on nVHE __tlb_switch_to_guest · 452d6222
      Marc Zyngier authored
      Commit a0e50aa3 ("KVM: arm64: Factor out stage 2 page table
      data from struct kvm") dropped the ISB after __load_guest_stage2(),
      only leaving the one that is required when the speculative AT
      workaround is in effect.
      
      As Andrew points it: "This alternative is 'backwards' to avoid a
      double ISB as there is one in __load_guest_stage2 when the workaround
      is active."
      
      Restore the missing ISB, conditionned on the AT workaround not being
      active.
      
      Fixes: a0e50aa3 ("KVM: arm64: Factor out stage 2 page table data from struct kvm")
      Reported-by: default avatarAndrew Scull <ascull@google.com>
      Reported-by: default avatarThomas Tai <thomas.tai@oracle.com>
      Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
      452d6222
    • Andy Shevchenko's avatar
      gpio: pca953x: Correctly initialize registers 6 and 7 for PCA957x · 8c1f1c34
      Andy Shevchenko authored
      When driver has been converted to the bitmap API the non-bitmap functions
      started behaving differently on 32-bit BE architectures since the bytes in
      two consequent unsigned longs are in different order in comparison to byte
      array. Hence if the chip had had more than 32 lines the memset() call over
      it would have not set up upper lines correctly.
      Although it's currently a theoretical case (no supported chips of this type
      has 32+ lines), it's better to provide a clean code to avoid people thinking
      this is okay and potentially producing not fully working things.
      
      Fixes: 35d13d94 ("gpio: pca953x: convert to use bitmap API")
      Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
      Reviewed-by: default avatarBartosz Golaszewski <bgolaszewski@baylibre.com>
      Link: https://lore.kernel.org/r/20200930142013.59247-2-andriy.shevchenko@linux.intel.comSigned-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
      8c1f1c34