1. 12 Dec, 2017 5 commits
    • Mark Rutland's avatar
      tools/include: Remove ACCESS_ONCE() · 2a22f692
      Mark Rutland authored
      There are no longer any usersapce uses of ACCESS_ONCE(), so we can
      remove the definition from our userspace <linux/compiler.h>, which is
      only used by tools in the kernel directory (i.e. it isn't a uapi
      header).
      
      This patch removes the ACCESS_ONCE() definition, and updates comments
      which referred to it. At the same time, some inconsistent and redundant
      whitespace is removed from comments.
      Tested-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
      Signed-off-by: default avatarMark Rutland <mark.rutland@arm.com>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Joe Perches <joe@perches.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: apw@canonical.com
      Link: http://lkml.kernel.org/r/20171127103824.36526-3-mark.rutland@arm.comSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
      2a22f692
    • Mark Rutland's avatar
      tools/perf: Convert ACCESS_ONCE() to READ_ONCE() · f971e511
      Mark Rutland authored
      Recently there was a treewide conversion of ACCESS_ONCE() to
      {READ,WRITE}_ONCE(), but a new use was introduced concurrently by
      commit:
      
        16958497 ("perf mmap: Move perf_mmap and methods to separate mmap.[ch] files")
      
      Let's convert this over to READ_ONCE() so that we can remove the
      ACCESS_ONCE() definitions in subsequent patches.
      Tested-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
      Signed-off-by: default avatarMark Rutland <mark.rutland@arm.com>
      Reviewed-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Joe Perches <joe@perches.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: apw@canonical.com
      Link: http://lkml.kernel.org/r/20171127103824.36526-2-mark.rutland@arm.comSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
      f971e511
    • Ingo Molnar's avatar
      locking/lockdep: Remove the cross-release locking checks · e966eaee
      Ingo Molnar authored
      This code (CONFIG_LOCKDEP_CROSSRELEASE=y and CONFIG_LOCKDEP_COMPLETIONS=y),
      while it found a number of old bugs initially, was also causing too many
      false positives that caused people to disable lockdep - which is arguably
      a worse overall outcome.
      
      If we disable cross-release by default but keep the code upstream then
      in practice the most likely outcome is that we'll allow the situation
      to degrade gradually, by allowing entropy to introduce more and more
      false positives, until it overwhelms maintenance capacity.
      
      Another bad side effect was that people were trying to work around
      the false positives by uglifying/complicating unrelated code. There's
      a marked difference between annotating locking operations and
      uglifying good code just due to bad lock debugging code ...
      
      This gradual decrease in quality happened to a number of debugging
      facilities in the kernel, and lockdep is pretty complex already,
      so we cannot risk this outcome.
      
      Either cross-release checking can be done right with no false positives,
      or it should not be included in the upstream kernel.
      
      ( Note that it might make sense to maintain it out of tree and go through
        the false positives every now and then and see whether new bugs were
        introduced. )
      
      Cc: Byungchul Park <byungchul.park@lge.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: linux-kernel@vger.kernel.org
      Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
      e966eaee
    • Will Deacon's avatar
      locking/core: Remove break_lock field when CONFIG_GENERIC_LOCKBREAK=y · d89c7035
      Will Deacon authored
      When CONFIG_GENERIC_LOCKBEAK=y, locking structures grow an extra int ->break_lock
      field which is used to implement raw_spin_is_contended() by setting the field
      to 1 when waiting on a lock and clearing it to zero when holding a lock.
      However, there are a few problems with this approach:
      
        - There is a write-write race between a CPU successfully taking the lock
          (and subsequently writing break_lock = 0) and a waiter waiting on
          the lock (and subsequently writing break_lock = 1). This could result
          in a contended lock being reported as uncontended and vice-versa.
      
        - On machines with store buffers, nothing guarantees that the writes
          to break_lock are visible to other CPUs at any particular time.
      
        - READ_ONCE/WRITE_ONCE are not used, so the field is potentially
          susceptible to harmful compiler optimisations,
      
      Consequently, the usefulness of this field is unclear and we'd be better off
      removing it and allowing architectures to implement raw_spin_is_contended() by
      providing a definition of arch_spin_is_contended(), as they can when
      CONFIG_GENERIC_LOCKBREAK=n.
      Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
      Acked-by: default avatarPeter Zijlstra <peterz@infradead.org>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Link: http://lkml.kernel.org/r/1511894539-7988-3-git-send-email-will.deacon@arm.comSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
      d89c7035
    • Will Deacon's avatar
      locking/core: Fix deadlock during boot on systems with GENERIC_LOCKBREAK · f87f3a32
      Will Deacon authored
      Commit:
      
        a8a217c2 ("locking/core: Remove {read,spin,write}_can_lock()")
      
      removed the definition of raw_spin_can_lock(), causing the GENERIC_LOCKBREAK
      spin_lock() routines to poll the ->break_lock field when waiting on a lock.
      
      This has been reported to cause a deadlock during boot on s390, because
      the ->break_lock field is also set by the waiters, and can potentially
      remain set indefinitely if no other CPUs come in to take the lock after
      it has been released.
      
      This patch removes the explicit spinning on ->break_lock from the waiters,
      instead relying on the outer trylock() operation to determine when the
      lock is available.
      Reported-by: default avatarSebastian Ott <sebott@linux.vnet.ibm.com>
      Tested-by: default avatarSebastian Ott <sebott@linux.vnet.ibm.com>
      Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
      Acked-by: default avatarPeter Zijlstra <peterz@infradead.org>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Fixes: a8a217c2 ("locking/core: Remove {read,spin,write}_can_lock()")
      Link: http://lkml.kernel.org/r/1511894539-7988-2-git-send-email-will.deacon@arm.comSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
      f87f3a32
  2. 11 Dec, 2017 1 commit
  3. 10 Dec, 2017 9 commits
    • Jeff Layton's avatar
      hpfs: don't bother with the i_version counter or f_version · 98087c05
      Jeff Layton authored
      HPFS does not set SB_I_VERSION and does not use the i_version counter
      internally.
      Signed-off-by: default avatarJeff Layton <jlayton@redhat.com>
      Signed-off-by: default avatarMikulas Patocka <mikulas@twibright.com>
      Reviewed-by: default avatarMikulas Patocka <mikulas@twibright.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      98087c05
    • Jiri Slaby's avatar
      futex: futex_wake_op, fix sign_extend32 sign bits · d70ef228
      Jiri Slaby authored
      sign_extend32 counts the sign bit parameter from 0, not from 1.  So we
      have to use "11" for 12th bit, not "12".
      
      This mistake means we have not allowed negative op and cmp args since
      commit 30d6e0a4 ("futex: Remove duplicated code and fix undefined
      behaviour") till now.
      
      Fixes: 30d6e0a4 ("futex: Remove duplicated code and fix undefined behaviour")
      Signed-off-by: default avatarJiri Slaby <jslaby@suse.cz>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Darren Hart <dvhart@infradead.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      d70ef228
    • Linus Torvalds's avatar
      Merge tag 'for-4.15-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux · 51090c5d
      Linus Torvalds authored
      Pull btrfs fixes from David Sterba:
       "This contains a few fixes (error handling, quota leak, FUA vs
        nobarrier mount option).
      
        There's one one worth mentioning separately - an off-by-one fix that
        leads to overwriting first byte of an adjacent page with 0, out of
        bounds of the memory allocated by an ioctl. This is under a privileged
        part of the ioctl, can be triggerd in some subvolume layouts"
      
      * tag 'for-4.15-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
        btrfs: Fix possible off-by-one in btrfs_search_path_in_tree
        Btrfs: disable FUA if mounted with nobarrier
        btrfs: fix missing error return in btrfs_drop_snapshot
        btrfs: handle errors while updating refcounts in update_ref_for_cow
        btrfs: Fix quota reservation leak on preallocated files
      51090c5d
    • Linus Torvalds's avatar
      Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc · 9c02e060
      Linus Torvalds authored
      Pull ARM SoC fixes from Olof Johansson:
      
       - A revert of all SCPI changes from the 4.15 merge window. They had
         regressions on the Amlogic platforms, and the submaintainer isn't
         around to fix these bugs due to vacation, etc. So we agreed to revert
         and revisit in next release cycle.
      
       - A series fixing a number of bugs for ARM CCN interconnect, around
         module unload, smp_processor_id() in preemptable context, and fixing
         some memory allocation failure checks.
      
       - A handful of devicetree fixes for different platforms, fixing
         warnings and errors that were previously ignored by the compiler.
      
       - The usual set of mostly minor fixes for different platforms.
      
      * tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (42 commits)
        ARM64: dts: meson-gx: fix UART pclk clock name
        ARM: omap2: hide omap3_save_secure_ram on non-OMAP3 builds
        arm: dts: nspire: Add missing #phy-cells to usb-nop-xceiv
        ARM: dts: Fix dm814x missing phy-cells property
        ARM: dts: Fix elm interrupt compiler warning
        bus: arm-ccn: fix module unloading Error: Removing state 147 which has instances left.
        bus: arm-cci: Fix use of smp_processor_id() in preemptible context
        bus: arm-ccn: Fix use of smp_processor_id() in preemptible context
        bus: arm-ccn: Simplify code
        bus: arm-ccn: Check memory allocation failure
        bus: arm-ccn: constify attribute_group structures.
        firmware: arm_scpi: Revert updates made during v4.15 merge window
        arm: dts: marvell: Add missing #phy-cells to usb-nop-xceiv
        arm64: dts: sort vendor subdirectories in Makefile alphabetically
        meson-gx-socinfo: Fix package id parsing
        ARM: meson: fix spelling mistake: "Couln't" -> "Couldn't"
        ARM: dts: meson: fix the memory region of the GPIO interrupt controller
        ARM: dts: meson: correct the sort order for the the gpio_intc node
        MAINTAINERS: exclude other Socionext SoC DT files from ARM/UNIPHIER entry
        arm64: dts: uniphier: remove unnecessary interrupt-parent
        ...
      9c02e060
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm · c465fc11
      Linus Torvalds authored
      Pull KVM fixes from Radim Krčmář:
       "ARM:
         - A number of issues in the vgic discovered using SMATCH
         - A bit one-off calculation in out stage base address mask (32-bit
           and 64-bit)
         - Fixes to single-step debugging instructions that trap for other
           reasons such as MMMIO aborts
         - Printing unavailable hyp mode as error
         - Potential spinlock deadlock in the vgic
         - Avoid calling vgic vcpu free more than once
         - Broken bit calculation for big endian systems
      
       s390:
         - SPDX tags
         - Fence storage key accesses from problem state
         - Make sure that irq_state.flags is not used in the future
      
        x86:
         - Intercept port 0x80 accesses to prevent host instability (CVE)
         - Use userspace FPU context for guest FPU (mainly an optimization
           that fixes a double use of kernel FPU)
         - Do not leak one page per module load
         - Flush APIC page address cache from MMU invalidation notifiers"
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (28 commits)
        KVM: x86: fix APIC page invalidation
        KVM: s390: Fix skey emulation permission check
        KVM: s390: mark irq_state.flags as non-usable
        KVM: s390: Remove redundant license text
        KVM: s390: add SPDX identifiers to the remaining files
        KVM: VMX: fix page leak in hardware_setup()
        KVM: VMX: remove I/O port 0x80 bypass on Intel hosts
        x86,kvm: remove KVM emulator get_fpu / put_fpu
        x86,kvm: move qemu/guest FPU switching out to vcpu_run
        KVM: arm/arm64: Fix broken GICH_ELRSR big endian conversion
        KVM: arm/arm64: kvm_arch_destroy_vm cleanups
        KVM: arm/arm64: Fix spinlock acquisition in vgic_set_owner
        kvm: arm: don't treat unavailable HYP mode as an error
        KVM: arm/arm64: Avoid attempting to load timer vgic state without a vgic
        kvm: arm64: handle single-step of hyp emulated mmio instructions
        kvm: arm64: handle single-step during SError exceptions
        kvm: arm64: handle single-step of userspace mmio instructions
        kvm: arm64: handle single-stepping trapped instructions
        KVM: arm/arm64: debug: Introduce helper for single-step
        arm: KVM: Fix VTTBR_BADDR_MASK BUG_ON off-by-one
        ...
      c465fc11
    • Olof Johansson's avatar
      Merge branch 'fixes' into for-next · 8be0b988
      Olof Johansson authored
      * fixes:
        ARM64: dts: meson-gx: fix UART pclk clock name
        ARM: dts: Fix dm814x missing phy-cells property
        ARM: dts: Fix elm interrupt compiler warning
        bus: arm-ccn: fix module unloading Error: Removing state 147 which has instances left.
        bus: arm-cci: Fix use of smp_processor_id() in preemptible context
        bus: arm-ccn: Fix use of smp_processor_id() in preemptible context
        bus: arm-ccn: Simplify code
        bus: arm-ccn: Check memory allocation failure
        bus: arm-ccn: constify attribute_group structures.
        meson-gx-socinfo: Fix package id parsing
        ARM: meson: fix spelling mistake: "Couln't" -> "Couldn't"
        ARM: dts: meson: fix the memory region of the GPIO interrupt controller
        ARM: dts: meson: correct the sort order for the the gpio_intc node
      8be0b988
    • Olof Johansson's avatar
      Merge tag 'amlogic-fixes-1' of... · ce39882e
      Olof Johansson authored
      Merge tag 'amlogic-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic into fixes
      
      Amlogic fixes for v4.15-rc
      - GPIO interrupt fixes
      - socinfo fix for GX series
      - fix typo
      
      * tag 'amlogic-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic:
        ARM64: dts: meson-gx: fix UART pclk clock name
        meson-gx-socinfo: Fix package id parsing
        ARM: meson: fix spelling mistake: "Couln't" -> "Couldn't"
        ARM: dts: meson: fix the memory region of the GPIO interrupt controller
        ARM: dts: meson: correct the sort order for the the gpio_intc node
      Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
      ce39882e
    • Olof Johansson's avatar
      Merge tag 'ccn/fixes-for-4.15' of git://git.linaro.org/people/pawel.moll/linux into fixes · 3dda7f63
      Olof Johansson authored
      bus: ARM CCN and CCI PMU driver fixes
      
      This is a bunch of fixes CCN and (guest starring this time) CCI drivers.
      
      * Check for potential of failed allocation for the driver name string
      * Manage CPU ID properly at allocation (both CCN and CCI)
      * Fix module unload warnings related to objects release order
      * Small improvements like using allocating printfs and proper
        attributes constification
      
      The one fixing potential issues have been cc-ed to stable.
      
      * tag 'ccn/fixes-for-4.15' of git://git.linaro.org/people/pawel.moll/linux:
        bus: arm-ccn: fix module unloading Error: Removing state 147 which has instances left.
        bus: arm-cci: Fix use of smp_processor_id() in preemptible context
        bus: arm-ccn: Fix use of smp_processor_id() in preemptible context
        bus: arm-ccn: Simplify code
        bus: arm-ccn: Check memory allocation failure
        bus: arm-ccn: constify attribute_group structures.
      Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
      3dda7f63
    • Olof Johansson's avatar
      Merge tag 'omap-for-v4.15/fixes-dt-warnings' of... · 69b8df5d
      Olof Johansson authored
      Merge tag 'omap-for-v4.15/fixes-dt-warnings' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
      
      Two fixes for dts compiler warnings
      
      These recently started showing up with better dtc checks being
      introduced.
      
      * tag 'omap-for-v4.15/fixes-dt-warnings' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
        ARM: dts: Fix dm814x missing phy-cells property
        ARM: dts: Fix elm interrupt compiler warning
      Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
      69b8df5d
  4. 09 Dec, 2017 1 commit
  5. 08 Dec, 2017 24 commits
    • Michal Hocko's avatar
      kmemcheck: rip it out for real · f335195a
      Michal Hocko authored
      Commit 4675ff05 ("kmemcheck: rip it out") has removed the code but
      for some reason SPDX header stayed in place.  This looks like a rebase
      mistake in the mmotm tree or the merge mistake.  Let's drop those
      leftovers as well.
      Signed-off-by: default avatarMichal Hocko <mhocko@suse.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      f335195a
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · e9ef1fe3
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) CAN fixes from Martin Kelly (cancel URBs properly in all the CAN usb
          drivers).
      
       2) Revert returning -EEXIST from __dev_alloc_name() as this propagates
          to userspace and broke some apps. From Johannes Berg.
      
       3) Fix conn memory leaks and crashes in TIPC, from Jon Malloc and Cong
          Wang.
      
       4) Gianfar MAC can't do EEE so don't advertise it by default, from
          Claudiu Manoil.
      
       5) Relax strict netlink attribute validation, but emit a warning. From
          David Ahern.
      
       6) Fix regression in checksum offload of thunderx driver, from Florian
          Westphal.
      
       7) Fix UAPI bpf issues on s390, from Hendrik Brueckner.
      
       8) New card support in iwlwifi, from Ihab Zhaika.
      
       9) BBR congestion control bug fixes from Neal Cardwell.
      
      10) Fix port stats in nfp driver, from Pieter Jansen van Vuuren.
      
      11) Fix leaks in qualcomm rmnet, from Subash Abhinov Kasiviswanathan.
      
      12) Fix DMA API handling in sh_eth driver, from Thomas Petazzoni.
      
      13) Fix spurious netpoll warnings in bnxt_en, from Calvin Owens.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (67 commits)
        net: mvpp2: fix the RSS table entry offset
        tcp: evaluate packet losses upon RTT change
        tcp: fix off-by-one bug in RACK
        tcp: always evaluate losses in RACK upon undo
        tcp: correctly test congestion state in RACK
        bnxt_en: Fix sources of spurious netpoll warnings
        tcp_bbr: reset long-term bandwidth sampling on loss recovery undo
        tcp_bbr: reset full pipe detection on loss recovery undo
        tcp_bbr: record "full bw reached" decision in new full_bw_reached bit
        sfc: pass valid pointers from efx_enqueue_unwind
        gianfar: Disable EEE autoneg by default
        tcp: invalidate rate samples during SACK reneging
        can: peak/pcie_fd: fix potential bug in restarting tx queue
        can: usb_8dev: cancel urb on -EPIPE and -EPROTO
        can: kvaser_usb: 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: mcba_usb: cancel urb on -EPROTO
        usbnet: fix alignment for frames with no ethernet header
        tcp: use current time in tcp_rcv_space_adjust()
        ...
      e9ef1fe3
    • Linus Torvalds's avatar
      Merge tag 'media/v4.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media · 77071bc6
      Linus Torvalds authored
      Pull media fixes from Mauro Carvalho Chehab:
      
       "A series of fixes for the media subsytem:
      
         - The largest amount of fixes in this series is with regards to
           comments that aren't kernel-doc, but start with "/**".
      
           A new check added for 4.15 makes it to produce a *huge* amount of
           new warnings (I'm compiling here with W=1). Most of the patches in
           this series fix those.
      
           No code changes - just comment changes at the source files
      
         - rc: some fixed in order to better handle RC repetition codes
      
         - v4l-async: use the v4l2_dev from the root notifier when matching
           sub-devices
      
         - v4l2-fwnode: Check subdev count after checking port
      
         - ov 13858 and et8ek8: compilation fix with randconfigs
      
         - usbtv: a trivial new USB ID addition
      
         - dibusb-common: don't do DMA on stack on firmware load
      
         - imx274: Fix error handling, add MAINTAINERS entry
      
         - sir_ir: detect presence of port"
      
      * tag 'media/v4.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (50 commits)
        media: imx274: Fix error handling, add MAINTAINERS entry
        media: v4l: async: use the v4l2_dev from the root notifier when matching sub-devices
        media: v4l2-fwnode: Check subdev count after checking port
        media: et8ek8: select V4L2_FWNODE
        media: ov13858: Select V4L2_FWNODE
        media: rc: partial revert of "media: rc: per-protocol repeat period"
        media: dvb: i2c transfers over usb cannot be done from stack
        media: dvb-frontends: complete kernel-doc markups
        media: docs: add documentation for frontend attach info
        media: dvb_frontends: fix kernel-doc macros
        media: drivers: remove "/**" from non-kernel-doc comments
        media: lm3560: add a missing kernel-doc parameter
        media: rcar_jpu: fix two kernel-doc markups
        media: vsp1: add a missing kernel-doc parameter
        media: soc_camera: fix a kernel-doc markup
        media: mt2063: fix some kernel-doc warnings
        media: radio-wl1273: fix a parameter name at kernel-doc macro
        media: s3c-camif: add missing description at s3c_camif_find_format()
        media: mtk-vpu: add description for wdt fields at struct mtk_vpu
        media: vdec: fix some kernel-doc warnings
        ...
      77071bc6
    • Linus Torvalds's avatar
      Merge tag 'drm-fixes-for-v4.15-rc3' of git://people.freedesktop.org/~airlied/linux · 4066aa72
      Linus Torvalds authored
      Pull drm fixes from Dave Airlie:
       "This pull is a bit larger than I'd like but a large bunch of it is
        license fixes, AMD wanted to fix the licenses for a bunch of files
        that were missing them,
      
       Otherwise a bunch of TTM regression fix since the hugepage support,
       some i915 and gvt fixes, a core connector free in a safe context fix,
       and one bridge fix"
      
      * tag 'drm-fixes-for-v4.15-rc3' of git://people.freedesktop.org/~airlied/linux: (26 commits)
        drm/bridge: analogix dp: Fix runtime PM state in get_modes() callback
        Revert "drm/i915: Display WA #1133 WaFbcSkipSegments:cnl, glk"
        drm/vc4: Fix false positive WARN() backtrace on refcount_inc() usage
        drm/i915: Call i915_gem_init_userptr() before taking struct_mutex
        drm/exynos: remove unnecessary function declaration
        drm/exynos: remove unnecessary descrptions
        drm/exynos: gem: Drop NONCONTIG flag for buffers allocated without IOMMU
        drm/exynos: Fix dma-buf import
        drm/ttm: swap consecutive allocated pooled pages v4
        drm: safely free connectors from connector_iter
        drm/i915/gvt: set max priority for gvt context
        drm/i915/gvt: Don't mark vgpu context as inactive when preempted
        drm/i915/gvt: Limit read hw reg to active vgpu
        drm/i915/gvt: Export intel_gvt_render_mmio_to_ring_id()
        drm/i915/gvt: Emulate PCI expansion ROM base address register
        drm/ttm: swap consecutive allocated cached pages v3
        drm/ttm: roundup the shrink request to prevent skip huge pool
        drm/ttm: add page order support in ttm_pages_put
        drm/ttm: add set_pages_wb for handling page order more than zero
        drm/ttm: add page order in page pool
        ...
      4066aa72
    • Linus Torvalds's avatar
      Merge tag 'md/4.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md · 7267212c
      Linus Torvalds authored
      Pull md fixes from Shaohua Li:
       "Some MD fixes.
      
        The notable one is a raid5-cache deadlock bug with dm-raid, others are
        not significant"
      
      * tag 'md/4.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md:
        md/raid1/10: add missed blk plug
        md: limit mdstat resync progress to max_sectors
        md/r5cache: move mddev_lock() out of r5c_journal_mode_set()
        md/raid5: correct degraded calculation in raid5_error
      7267212c
    • Linus Torvalds's avatar
      Merge tag 'devicetree-fixes-for-4.15-part2' of... · 78d9b048
      Linus Torvalds authored
      Merge tag 'devicetree-fixes-for-4.15-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
      
      Pull DeviceTree fixes from Rob Herring:
       "Another set of DT fixes:
      
         - Fixes from overlay code rework. A trifecta of fixes to the locking,
           an out of bounds access, and a memory leak in of_overlay_apply()
      
         - Clean-up at25 eeprom binding document
      
         - Remove leading '0x' in unit-addresses from binding docs"
      
      * tag 'devicetree-fixes-for-4.15-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
        of: overlay: Make node skipping in init_overlay_changeset() clearer
        of: overlay: Fix out-of-bounds write in init_overlay_changeset()
        of: overlay: Fix (un)locking in of_overlay_apply()
        of: overlay: Fix memory leak in of_overlay_apply() error path
        dt-bindings: eeprom: at25: Document device-specific compatible values
        dt-bindings: eeprom: at25: Grammar s/are can/can/
        dt-bindings: Remove leading 0x from bindings notation
        of: overlay: Remove else after goto
        of: Spelling s/changset/changeset/
        of: unittest: Remove bogus overlay mutex release from overlay_data_add()
      78d9b048
    • Linus Torvalds's avatar
      Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost · 900add27
      Linus Torvalds authored
      Pull virtio bugfixes from Michael Tsirkin:
       "A couple of minor bugfixes"
      
      * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
        virtio_net: fix return value check in receive_mergeable()
        virtio_mmio: add cleanup for virtio_mmio_remove
        virtio_mmio: add cleanup for virtio_mmio_probe
      900add27
    • Linus Torvalds's avatar
      Merge tag 'for-linus-4.15-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip · 32abeb09
      Linus Torvalds authored
      Pull xen fixes from Juergen Gross:
       "Just two small fixes for the new pvcalls frontend driver"
      
      * tag 'for-linus-4.15-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
        xen/pvcalls: Fix a check in pvcalls_front_remove()
        xen/pvcalls: check for xenbus_read() errors
      32abeb09
    • Linus Torvalds's avatar
      Merge tag 'powerpc-4.15-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux · d90696ed
      Linus Torvalds authored
      Pull powerpc fixes from Michael Ellerman:
      
       "One notable fix for kexec on Power9, where we were not clearing MMU
        PID properly which sometimes leads to hangs. Finally debugged to a
        root cause by Nick.
      
        A revert of a patch which tried to rework our panic handling to get
        more output on the console, but inadvertently broke reporting the
        panic to the hypervisor, which apparently people care about.
      
        Then a fix for an oops in the PMU code, and finally some s/%p/%px/ in
        xmon.
      
        Thanks to: David Gibson, Nicholas Piggin, Ravi Bangoria"
      
      * tag 'powerpc-4.15-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
        powerpc/xmon: Don't print hashed pointers in xmon
        powerpc/64s: Initialize ISAv3 MMU registers before setting partition table
        Revert "powerpc: Do not call ppc_md.panic in fadump panic notifier"
        powerpc/perf: Fix oops when grouping different pmu events
      d90696ed
    • David S. Miller's avatar
      Merge tag 'linux-can-fixes-for-4.15-20171208' of... · fd29117a
      David S. Miller authored
      Merge tag 'linux-can-fixes-for-4.15-20171208' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
      
      Marc Kleine-Budde says:
      
      ====================
      pull-request: can 2017-12-08
      
      this is a pull request of 6 patches for net/master.
      
      Martin Kelly provides 5 patches for various USB based CAN drivers, that
      properly cancel the URBs on adapter unplug, so that the driver doesn't
      end up in an endless loop. Stephane Grosjean provides a patch to restart
      the tx queue if zero length packages are transmitted.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      fd29117a
    • David S. Miller's avatar
      Merge tag 'wireless-drivers-for-davem-2017-12-08' of... · 03afb6e4
      David S. Miller authored
      Merge tag 'wireless-drivers-for-davem-2017-12-08' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers
      
      Kalle Valo says:
      
      ====================
      wireless-drivers fixes for 4.15
      
      Second set of fixes for 4.15. This time a lot of iwlwifi patches and
      two brcmfmac patches. Most important here are the MIC and IVC fixes
      for iwlwifi to unbreak 9000 series.
      
      iwlwifi
      
      * fix rate-scaling to not start lowest possible rate
      
      * fix the TX queue hang detection for AP/GO modes
      
      * fix the TX queue hang timeout in monitor interfaces
      
      * fix packet injection
      
      * remove a wrong error message when dumping PCI registers
      
      * fix race condition with RF-kill
      
      * tell mac80211 when the MIC has been stripped (9000 series)
      
      * tell mac80211 when the IVC has been stripped (9000 series)
      
      * add 2 new PCI IDs, one for 9000 and one for 22000
      
      * fix a queue hang due during a P2P Remain-on-Channel operation
      
      brcmfmac
      
      * fix a race which sometimes caused a crash during sdio unbind
      
      * fix a kernel-doc related build error
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      03afb6e4
    • Antoine Tenart's avatar
      net: mvpp2: fix the RSS table entry offset · 8a7b741e
      Antoine Tenart authored
      The macro used to access or set an RSS table entry was using an offset
      of 8, while it should use an offset of 0. This lead to wrongly configure
      the RSS table, not accessing the right entries.
      
      Fixes: 1d7d15d7 ("net: mvpp2: initialize the RSS tables")
      Signed-off-by: default avatarAntoine Tenart <antoine.tenart@free-electrons.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      8a7b741e
    • David S. Miller's avatar
      Merge branch 'tcp-RACK-loss-recovery-bug-fixes' · b7e445a1
      David S. Miller authored
      Yuchung Cheng says:
      
      ====================
      tcp: RACK loss recovery bug fixes
      
      This patch set has four minor bug fixes in TCP RACK loss recovery.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b7e445a1
    • Yuchung Cheng's avatar
      tcp: evaluate packet losses upon RTT change · 6065fd0d
      Yuchung Cheng authored
      RACK skips an ACK unless it advances the most recently delivered
      TX timestamp (rack.mstamp). Since RACK also uses the most recent
      RTT to decide if a packet is lost, RACK should still run the
      loss detection whenever the most recent RTT changes. For example,
      an ACK that does not advance the timestamp but triggers the cwnd
      undo due to reordering, would then use the most recent (higher)
      RTT measurement to detect further losses.
      Signed-off-by: default avatarYuchung Cheng <ycheng@google.com>
      Reviewed-by: default avatarNeal Cardwell <ncardwell@google.com>
      Reviewed-by: default avatarPriyaranjan Jha <priyarjha@google.com>
      Reviewed-by: default avatarEric Dumazet <edumazet@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      6065fd0d
    • Yuchung Cheng's avatar
      tcp: fix off-by-one bug in RACK · 428aec5e
      Yuchung Cheng authored
      RACK should mark a packet lost when remaining wait time is zero.
      Signed-off-by: default avatarYuchung Cheng <ycheng@google.com>
      Reviewed-by: default avatarNeal Cardwell <ncardwell@google.com>
      Reviewed-by: default avatarPriyaranjan Jha <priyarjha@google.com>
      Reviewed-by: default avatarEric Dumazet <edumazet@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      428aec5e
    • Yuchung Cheng's avatar
      tcp: always evaluate losses in RACK upon undo · cd1fc85b
      Yuchung Cheng authored
      When sender detects spurious retransmission, all packets
      marked lost are remarked to be in-flight. However some may
      be considered lost based on its timestamps in RACK. This patch
      forces RACK to re-evaluate, which may be skipped previously if
      the ACK does not advance RACK timestamp.
      Signed-off-by: default avatarYuchung Cheng <ycheng@google.com>
      Reviewed-by: default avatarNeal Cardwell <ncardwell@google.com>
      Reviewed-by: default avatarPriyaranjan Jha <priyarjha@google.com>
      Reviewed-by: default avatarEric Dumazet <edumazet@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      cd1fc85b
    • Yuchung Cheng's avatar
      tcp: correctly test congestion state in RACK · 0ce294d8
      Yuchung Cheng authored
      RACK does not test the loss recovery state correctly to compute
      the reordering window. It assumes if lost_out is zero then TCP is
      not in loss recovery. But it can be zero during recovery before
      calling tcp_rack_detect_loss(): when an ACK acknowledges all
      packets marked lost before receiving this ACK, but has not yet
      to discover new ones by tcp_rack_detect_loss(). The fix is to
      simply test the congestion state directly.
      Signed-off-by: default avatarYuchung Cheng <ycheng@google.com>
      Reviewed-by: default avatarNeal Cardwell <ncardwell@google.com>
      Reviewed-by: default avatarPriyaranjan Jha <priyarjha@google.com>
      Reviewed-by: default avatarEric Dumazet <edumazet@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      0ce294d8
    • Calvin Owens's avatar
      bnxt_en: Fix sources of spurious netpoll warnings · 2edbdb31
      Calvin Owens authored
      After applying 2270bc5d ("bnxt_en: Fix netpoll handling") and
      903649e7 ("bnxt_en: Improve -ENOMEM logic in NAPI poll loop."),
      we still see the following WARN fire:
      
        ------------[ cut here ]------------
        WARNING: CPU: 0 PID: 1875170 at net/core/netpoll.c:165 netpoll_poll_dev+0x15a/0x160
        bnxt_poll+0x0/0xd0 exceeded budget in poll
        <snip>
        Call Trace:
         [<ffffffff814be5cd>] dump_stack+0x4d/0x70
         [<ffffffff8107e013>] __warn+0xd3/0xf0
         [<ffffffff8107e07f>] warn_slowpath_fmt+0x4f/0x60
         [<ffffffff8179519a>] netpoll_poll_dev+0x15a/0x160
         [<ffffffff81795f38>] netpoll_send_skb_on_dev+0x168/0x250
         [<ffffffff817962fc>] netpoll_send_udp+0x2dc/0x440
         [<ffffffff815fa9be>] write_ext_msg+0x20e/0x250
         [<ffffffff810c8125>] call_console_drivers.constprop.23+0xa5/0x110
         [<ffffffff810c9549>] console_unlock+0x339/0x5b0
         [<ffffffff810c9a88>] vprintk_emit+0x2c8/0x450
         [<ffffffff810c9d5f>] vprintk_default+0x1f/0x30
         [<ffffffff81173df5>] printk+0x48/0x50
         [<ffffffffa0197713>] edac_raw_mc_handle_error+0x563/0x5c0 [edac_core]
         [<ffffffffa0197b9b>] edac_mc_handle_error+0x42b/0x6e0 [edac_core]
         [<ffffffffa01c3a60>] sbridge_mce_output_error+0x410/0x10d0 [sb_edac]
         [<ffffffffa01c47cc>] sbridge_check_error+0xac/0x130 [sb_edac]
         [<ffffffffa0197f3c>] edac_mc_workq_function+0x3c/0x90 [edac_core]
         [<ffffffff81095f8b>] process_one_work+0x19b/0x480
         [<ffffffff810967ca>] worker_thread+0x6a/0x520
         [<ffffffff8109c7c4>] kthread+0xe4/0x100
         [<ffffffff81884c52>] ret_from_fork+0x22/0x40
      
      This happens because we increment rx_pkts on -ENOMEM and -EIO, resulting
      in rx_pkts > 0. Fix this by only bumping rx_pkts if we were actually
      given a non-zero budget.
      Signed-off-by: default avatarCalvin Owens <calvinowens@fb.com>
      Acked-by: default avatarMichael Chan <michael.chan@broadcom.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      2edbdb31
    • Neil Armstrong's avatar
      ARM64: dts: meson-gx: fix UART pclk clock name · 39005e56
      Neil Armstrong authored
      The clock-names for pclk was wrongly set to "core", but the bindings
      specifies "pclk".
      This was not cathed until the legacy non-documented bindings were removed.
      Reported-by: default avatarAndreas Färber <afaerber@suse.de>
      Fixes: f72d6f60 ("ARM64: dts: meson-gx: use stable UART bindings with correct gate clock")
      Signed-off-by: default avatarNeil Armstrong <narmstrong@baylibre.com>
      Signed-off-by: default avatarKevin Hilman <khilman@baylibre.com>
      39005e56
    • David S. Miller's avatar
      Merge branch 'tcp-bbr-sampling-fixes' · b25b3e2f
      David S. Miller authored
      Neal Cardwell says:
      
      ====================
      TCP BBR sampling fixes for loss recovery undo
      
      This patch series has a few minor bug fixes for cases where spurious
      loss recoveries can trick BBR estimators into estimating that the
      available bandwidth is much lower than the true available bandwidth.
      In both cases the fix here is to just reset the estimator upon loss
      recovery undo.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      b25b3e2f
    • Neal Cardwell's avatar
      tcp_bbr: reset long-term bandwidth sampling on loss recovery undo · 600647d4
      Neal Cardwell authored
      Fix BBR so that upon notification of a loss recovery undo BBR resets
      long-term bandwidth sampling.
      
      Under high reordering, reordering events can be interpreted as loss.
      If the reordering and spurious loss estimates are high enough, this
      can cause BBR to spuriously estimate that we are seeing loss rates
      high enough to trigger long-term bandwidth estimation. To avoid that
      problem, this commit resets long-term bandwidth sampling on loss
      recovery undo events.
      Signed-off-by: default avatarNeal Cardwell <ncardwell@google.com>
      Reviewed-by: default avatarYuchung Cheng <ycheng@google.com>
      Acked-by: default avatarSoheil Hassas Yeganeh <soheil@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      600647d4
    • Neal Cardwell's avatar
      tcp_bbr: reset full pipe detection on loss recovery undo · 2f6c498e
      Neal Cardwell authored
      Fix BBR so that upon notification of a loss recovery undo BBR resets
      the full pipe detection (STARTUP exit) state machine.
      
      Under high reordering, reordering events can be interpreted as loss.
      If the reordering and spurious loss estimates are high enough, this
      could previously cause BBR to spuriously estimate that the pipe is
      full.
      
      Since spurious loss recovery means that our overall sending will have
      slowed down spuriously, this commit gives a flow more time to probe
      robustly for bandwidth and decide the pipe is really full.
      Signed-off-by: default avatarNeal Cardwell <ncardwell@google.com>
      Reviewed-by: default avatarYuchung Cheng <ycheng@google.com>
      Acked-by: default avatarSoheil Hassas Yeganeh <soheil@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      2f6c498e
    • Neal Cardwell's avatar
      tcp_bbr: record "full bw reached" decision in new full_bw_reached bit · c589e69b
      Neal Cardwell authored
      This commit records the "full bw reached" decision in a new
      full_bw_reached bit. This is a pure refactor that does not change the
      current behavior, but enables subsequent fixes and improvements.
      
      In particular, this enables simple and clean fixes because the full_bw
      and full_bw_cnt can be unconditionally zeroed without worrying about
      forgetting that we estimated we filled the pipe in Startup. And it
      enables future improvements because multiple code paths can be used
      for estimating that we filled the pipe in Startup; any new code paths
      only need to set this bit when they think the pipe is full.
      
      Note that this fix intentionally reduces the width of the full_bw_cnt
      counter, since we have never used the most significant bit.
      Signed-off-by: default avatarNeal Cardwell <ncardwell@google.com>
      Reviewed-by: default avatarYuchung Cheng <ycheng@google.com>
      Acked-by: default avatarSoheil Hassas Yeganeh <soheil@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      c589e69b
    • Bert Kenward's avatar
      sfc: pass valid pointers from efx_enqueue_unwind · d4a7a889
      Bert Kenward authored
      The bytes_compl and pkts_compl pointers passed to efx_dequeue_buffers
      cannot be NULL. Add a paranoid warning to check this condition and fix
      the one case where they were NULL.
      
      efx_enqueue_unwind() is called very rarely, during error handling.
      Without this fix it would fail with a NULL pointer dereference in
      efx_dequeue_buffer, with efx_enqueue_skb in the call stack.
      
      Fixes: e9117e50 ("sfc: Firmware-Assisted TSO version 2")
      Reported-by: default avatarJarod Wilson <jarod@redhat.com>
      Signed-off-by: default avatarBert Kenward <bkenward@solarflare.com>
      Tested-by: default avatarJarod Wilson <jarod@redhat.com>
      Acked-by: default avatarJarod Wilson <jarod@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d4a7a889