1. 19 Sep, 2016 2 commits
    • James Morse's avatar
      irqchip/gicv3: Silence noisy DEBUG_PER_CPU_MAPS warning · 727653d6
      James Morse authored
      gic_raise_softirq() walks the list of cpus using for_each_cpu(), it calls
      gic_compute_target_list() which advances the iterator by the number of
      CPUs in the cluster.
      
      If gic_compute_target_list() reaches the last CPU it leaves the iterator
      pointing at the last CPU. This means the next time round the for_each_cpu()
      loop cpumask_next() will be called with an invalid CPU.
      
      This triggers a warning when built with CONFIG_DEBUG_PER_CPU_MAPS:
      [    3.077738] GICv3: CPU1: found redistributor 1 region 0:0x000000002f120000
      [    3.077943] CPU1: Booted secondary processor [410fd0f0]
      [    3.078542] ------------[ cut here ]------------
      [    3.078746] WARNING: CPU: 1 PID: 0 at ../include/linux/cpumask.h:121 gic_raise_softirq+0x12c/0x170
      [    3.078812] Modules linked in:
      [    3.078869]
      [    3.078930] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.8.0-rc5+ #5188
      [    3.078994] Hardware name: Foundation-v8A (DT)
      [    3.079059] task: ffff80087a1a0080 task.stack: ffff80087a19c000
      [    3.079145] PC is at gic_raise_softirq+0x12c/0x170
      [    3.079226] LR is at gic_raise_softirq+0xa4/0x170
      [    3.079296] pc : [<ffff0000083ead24>] lr : [<ffff0000083eac9c>] pstate: 200001c9
      [    3.081139] Call trace:
      [    3.081202] Exception stack(0xffff80087a19fbe0 to 0xffff80087a19fd10)
      
      [    3.082269] [<ffff0000083ead24>] gic_raise_softirq+0x12c/0x170
      [    3.082354] [<ffff00000808e614>] smp_send_reschedule+0x34/0x40
      [    3.082433] [<ffff0000080e80a0>] resched_curr+0x50/0x88
      [    3.082512] [<ffff0000080e89d0>] check_preempt_curr+0x60/0xd0
      [    3.082593] [<ffff0000080e8a60>] ttwu_do_wakeup+0x20/0xe8
      [    3.082672] [<ffff0000080e8bb8>] ttwu_do_activate+0x90/0xc0
      [    3.082753] [<ffff0000080ea9a4>] try_to_wake_up+0x224/0x370
      [    3.082836] [<ffff0000080eabc8>] default_wake_function+0x10/0x18
      [    3.082920] [<ffff000008103134>] __wake_up_common+0x5c/0xa0
      [    3.083003] [<ffff0000081031f4>] __wake_up_locked+0x14/0x20
      [    3.083086] [<ffff000008103f80>] complete+0x40/0x60
      [    3.083168] [<ffff00000808df7c>] secondary_start_kernel+0x15c/0x1d0
      [    3.083240] [<00000000808911a4>] 0x808911a4
      [    3.113401] Detected PIPT I-cache on CPU2
      
      Avoid updating the iterator if the next call to cpumask_next() would
      cause the for_each_cpu() loop to exit.
      
      There is no change to gic_raise_softirq()'s behaviour, (cpumask_next()s
      eventual call to _find_next_bit() will return early as start >= nbits),
      this patch just silences the warning.
      
      Fixes: 021f6537 ("irqchip: gic-v3: Initial support for GICv3")
      Signed-off-by: default avatarJames Morse <james.morse@arm.com>
      Acked-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
      Cc: linux-arm-kernel@lists.infradead.org
      Cc: Jason Cooper <jason@lakedaemon.net>
      Link: http://lkml.kernel.org/r/1474306155-3303-1-git-send-email-james.morse@arm.comSigned-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
      727653d6
    • Marc Zyngier's avatar
      genirq: Skip chained interrupt trigger setup if type is IRQ_TYPE_NONE · 1984e075
      Marc Zyngier authored
      There is no point in trying to configure the trigger of a chained
      interrupt if no trigger information has been configured. At best
      this is ignored, and at the worse this confuses the underlying
      irqchip (which is likely not to handle such a thing), and
      unnecessarily alarms the user.
      
      Only apply the configuration if type is not IRQ_TYPE_NONE.
      
      Fixes: 1e12c4a9 ("genirq: Correctly configure the trigger on chained interrupts")
      Reported-and-tested-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
      Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
      Link: https://lkml.kernel.org/r/CAMuHMdVW1eTn20=EtYcJ8hkVwohaSuH_yQXrY2MGBEvZ8fpFOg@mail.gmail.com
      Link: http://lkml.kernel.org/r/1474274967-15984-1-git-send-email-marc.zyngier@arm.comSigned-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
      1984e075
  2. 18 Sep, 2016 8 commits
  3. 17 Sep, 2016 3 commits
  4. 16 Sep, 2016 27 commits
    • Linus Torvalds's avatar
      Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6 · 4d2899d7
      Linus Torvalds authored
      Pull cifs fixes from Steve French:
       "Small set of cifs fixes"
      
      * 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
        Move check for prefix path to within cifs_get_root()
        Compare prepaths when comparing superblocks
        Fix memory leaks in cifs_do_mount()
      4d2899d7
    • Linus Torvalds's avatar
      Merge tag 'nfsd-4.8-2' of git://linux-nfs.org/~bfields/linux · 87ee1280
      Linus Torvalds authored
      Pull nfsd bugfix from Bruce Fields:
       "Fix a memory corruption bug that I introduced in 4.7"
      
      * tag 'nfsd-4.8-2' of git://linux-nfs.org/~bfields/linux:
        svcauth_gss: Revert 64c59a37 ("Remove unnecessary allocation")
      87ee1280
    • Linus Torvalds's avatar
      Merge tag 'drm-fixes-for-4.8-rc6' of git://people.freedesktop.org/~airlied/linux · 5fbf3e32
      Linus Torvalds authored
      Pull drm fixes from Dave Airlie:
       "Two sets of i915 fixes, one set of vc4 crasher fixes, and a couple of
        atmel fixes.
      
        Nothing too out there at this stage, though I think some people are
        holidaying so it's been quiet enough"
      
      * tag 'drm-fixes-for-4.8-rc6' of git://people.freedesktop.org/~airlied/linux:
        drm/i915: Ignore OpRegion panel type except on select machines
        Revert "drm/i915/psr: Make idle_frames sensible again"
        drm/i915: Restore lost "Initialized i915" welcome message
        drm/vc4: mark vc4_bo_cache_purge() static
        drm/i915: Add GEN7_PCODE_MIN_FREQ_TABLE_GT_RATIO_OUT_OF_RANGE to SNB
        drm/i915: disable 48bit full PPGTT when vGPU is active
        drm/i915: enable vGPU detection for all
        drm/atmel-hlcdc: Make ->reset() implementation static
        drm: atmel-hlcdc: Fix vertical scaling
        drm/vc4: Allow some more signals to be packed with uniform resets.
        drm/i915/dvo: Remove dangling call to drm_encoder_cleanup()
      5fbf3e32
    • Linus Torvalds's avatar
      Merge tag 'pm-4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 095f5cfa
      Linus Torvalds authored
      Pull power management fix from Rafael Wysocki:
       "More annotations of tracepoints in the runtime PM framework to prevent
        RCU from complaining when that code is invoked from the idle path
        (Paul McKenney)"
      
      * tag 'pm-4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
        PM / runtime: Use _rcuidle for runtime suspend tracepoints
      095f5cfa
    • Dave Airlie's avatar
      Merge tag 'drm-vc4-fixes-2016-09-14' of https://github.com/anholt/linux into drm-fixes · 09cb5b78
      Dave Airlie authored
      This pull request brings in a fix for crashes in X on VC4.
      
      * tag 'drm-vc4-fixes-2016-09-14' of https://github.com/anholt/linux:
        drm/vc4: mark vc4_bo_cache_purge() static
        drm/vc4: Allow some more signals to be packed with uniform resets.
      09cb5b78
    • Dave Airlie's avatar
      Merge tag 'drm-intel-fixes-2016-09-15' of git://anongit.freedesktop.org/drm-intel into drm-fixes · 9929c097
      Dave Airlie authored
      i915 fixes from Jani.
      
      * tag 'drm-intel-fixes-2016-09-15' of git://anongit.freedesktop.org/drm-intel:
        drm/i915: Ignore OpRegion panel type except on select machines
        Revert "drm/i915/psr: Make idle_frames sensible again"
        drm/i915: Restore lost "Initialized i915" welcome message
      9929c097
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma · dd5a477c
      Linus Torvalds authored
      Pull rdma fixes from Doug Ledford:
       "Round three of 4.8 rc fixes.
      
        This is likely the last rdma pull request this cycle.  The new rxe
        driver had a few issues (you probably saw the boot bot bug report) and
        they should be addressed now.  There are a couple other fixes here,
        mainly mlx4.  There are still two outstanding issues that need
        resolved but I don't think their fix will make this kernel cycle.
      
        Summary:
      
         - Various fixes to rdmavt, ipoib, mlx5, mlx4, rxe"
      
      * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
        IB/rdmavt: Don't vfree a kzalloc'ed memory region
        IB/rxe: Fix kmem_cache leak
        IB/rxe: Fix race condition between requester and completer
        IB/rxe: Fix duplicate atomic request handling
        IB/rxe: Fix kernel panic in udp_setup_tunnel
        IB/mlx5: Set source mac address in FTE
        IB/mlx5: Enable MAD_IFC commands for IB ports only
        IB/mlx4: Diagnostic HW counters are not supported in slave mode
        IB/mlx4: Use correct subnet-prefix in QP1 mads under SR-IOV
        IB/mlx4: Fix code indentation in QP1 MAD flow
        IB/mlx4: Fix incorrect MC join state bit-masking on SR-IOV
        IB/ipoib: Don't allow MC joins during light MC flush
        IB/rxe: fix GFP_KERNEL in spinlock context
      dd5a477c
    • Linus Torvalds's avatar
      Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc · 008f08d6
      Linus Torvalds authored
      Pull ARM SoC fixes from Arnd Bergmann:
       "Here are a couple of bugfixes for v4.8-rc.
      
        Most of them have actually been around for a while this time but for
        some reason didn't get applied early on.  The shmobile regulator fix
        is the only one that isn't completely obvious.
      
        Device tree changes:
         - archtimer interrupts must be level triggered (multiple platforms)
         - fix for USB and MMC clocks on STiH410
         - fix split DT repository in case of raspberry-pi 3
         - a new use of skeleton.dtsi on arm64 has crept in after that was
           removed.
      
        defconfig updates:
         - xilinx vdma has a new Kconfig symbol name
         - keystone requires CONFIG_NOP_USB_XCEIV since v4.8-rc1
      
        Code fixes:
         - fix regulator quirk on shmobile
         - suspend-to-ram regression on EXYNOS
      
        Maintainer updates:
         - Javier Martinez Canillas is now a reviewer for Samsung EXYNOS"
      
      * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
        ARM: keystone: defconfig: Fix USB configuration
        arm64: dts: Fix broken architected timer interrupt trigger
        ARM: multi_v7_defconfig: update XILINX_VDMA
        ARM64: dts: bcm: Use a symlink to R-Pi dtsi files from arch=arm
        ARM: dts: Remove use of skeleton.dtsi from bcm283x.dtsi
        ARM: dts: STiH407-family: Provide interconnect clock for consumption in ST SDHCI
        ARM: dts: STiH410: Handle interconnect clock required by EHCI/OHCI (USB)
        ARM: shmobile: fix regulator quirk for Gen2
        ARM: EXYNOS: Clear OF_POPULATED flag from PMU node in IRQ init callback
        MAINTAINERS: Add myself as reviewer for Samsung Exynos support
      008f08d6
    • Linus Torvalds's avatar
      Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm · cac4662a
      Linus Torvalds authored
      Pull ARM fixes from Russell King:
       "Most of this update are fixes primarily discovered from testing on the
        older StrongARM 1110 and PXA systems, as a result of recent interest
        from several people in these platforms:
      
         - Locomo interrupt handling incorrectly stores the handler data in
           the chip's private data slot: when Locomo is combined with an
           interrupt controller who's chip uses the chip private data, this
           leads to an oops.
      
         - SA1111 was missing a call to clk_disable() to clean up after a
           failed probe.
      
         - SA1111 and PCMCIA suspend/resume was broken:
      
           The PCMCIA "ds" layer was using the legacy bus suspend/resume
           methods, which the core PM code is no longer calling as a result of
           device_pm_check_callbacks() introduced in commit aa8e54b5
           ("PM / sleep: Go direct_complete if driver has no callbacks").
      
           SA1111 was broken due to changes to PCMCIA which makes PCMCIA
           suspend itself later than the SA1111 code expects, and resume
           before the SA1111 code has initialised access to the pcmcia
           sub-device.
      
         - the default SA1111 interrupt mask polarity got messed up when it
           was converted to use a dynamic interrupt base number for its
           interrupts.
      
         - fix platform_get_irq() error code propagation, which was causing
           problems on platforms where the interrupt may not be available at
            probe time in DT setups.
      
         - fix the lack of clock to PCMCIA code on PXA platforms, which was
           omitted in conversions of PXA to CCF.
      
         - fix an oops in the PXA PCMCIA code caused by a previous commit not
           realising that Lubbock is different from the rest of the PXA PCMCIA
           drivers.
      
         - ensure that SA1111 low-level PCMCIA drivers propagate their error
           codes to the main probe function, rather than the driver silently
           accepting a failure.
      
         - fix the sa11xx debugfs reporting of timing information, which
           always indicated zero due to the clock being a factor of 1000 out.
      
         - fix the polarity of the status change signal reported from the
           sockets.
      
        Lastly, one ARM specific commit from Stefan Agner fixing the LPAE
        cache attributes"
      
      * 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
        ARM: pxa/lubbock: add pcmcia clock
        ARM: locomo: fix locomo irq handling
        ARM: 8612/1: LPAE: initialize cache policy correctly
        ARM: sa1111: fix missing clk_disable()
        ARM: sa1111: fix pcmcia suspend/resume
        ARM: sa1111: fix pcmcia interrupt mask polarity
        ARM: sa1111: fix error code propagation in sa1111_probe()
        pcmcia: lubbock: fix sockets configuration
        pcmcia: sa1111: fix propagation of lowlevel board init return code
        pcmcia: soc_common: fix SS_STSCHG polarity
        pcmcia: sa11xx_base: add units to the timing information
        pcmcia: sa11xx_base: fix reporting of timing information
        pcmcia: ds: fix suspend/resume
      cac4662a
    • Colin Ian King's avatar
      IB/rdmavt: Don't vfree a kzalloc'ed memory region · e4618d40
      Colin Ian King authored
      The userspace memory region 'mr' is allocated with kzalloc in
      __rvt_alloc_mr  however it is incorrectly being freed with vfree in
      __rvt_free_mr. Fix this by using kfree to free it.
      Signed-off-by: default avatarColin Ian King <colin.king@canonical.com>
      Reviewed-by: default avatarLeon Romanovsky <leonro@mellanox.com>
      Acked-by: default avatarDennis Dalessandro <dennis.dalessandro@intel.com>
      Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
      e4618d40
    • Yonatan Cohen's avatar
      IB/rxe: Fix kmem_cache leak · c1cc72cb
      Yonatan Cohen authored
      Decrement qp reference when handling error path
      in completer to prevent kmem_cache leak.
      
      Fixes: 8700e3e7 ("Soft RoCE driver")
      Signed-off-by: default avatarYonatan Cohen <yonatanc@mellanox.com>
      Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
      Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
      c1cc72cb
    • Yonatan Cohen's avatar
      IB/rxe: Fix race condition between requester and completer · 3050b998
      Yonatan Cohen authored
      rxe_requester() is sending a pkt with rxe_xmit_packet() and
      then calls rxe_update() to update the wqe and qp's psn values.
      But sometimes the response is received before the requester
      had time to update the wqe in which case the completer
      acts on errornous wqe values.
      This fix updates the wqe and qp before actually sending
      the request and rolls back when xmit fails.
      
      Fixes: 8700e3e7 ("Soft RoCE driver")
      Signed-off-by: default avatarYonatan Cohen <yonatanc@mellanox.com>
      Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
      Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
      3050b998
    • Yonatan Cohen's avatar
      IB/rxe: Fix duplicate atomic request handling · 90894887
      Yonatan Cohen authored
      When handling ack for atomic opcodes like "fetch&add"
      or "cmp&swp", the method send_atomic_ack() saves the ack
      before sending it, in case it gets lost and never reach the
      requester. In which case the method duplicate_request()
      will need to find it using the duplicated request.psn.
      But send_atomic_ack() used a wrong psn value and thus
      the above ack was never found.
      This fix uses the ack.psn to locate the ack in case
      its needed.
      This fix also copies the ack packet to the skb's control buffer
      since duplicate_request() will need it when calling rxe_xmit_packet()
      
      Fixes: 8700e3e7 ("Soft RoCE driver")
      Signed-off-by: default avatarYonatan Cohen <yonatanc@mellanox.com>
      Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
      Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
      90894887
    • Yonatan Cohen's avatar
      IB/rxe: Fix kernel panic in udp_setup_tunnel · dfdd6158
      Yonatan Cohen authored
      Disable creation of a UDP socket for ipv6 when
      CONFIG_IPV6 is not enabeld. Since udp_sock_create6()
      returns 0 when CONFIG_IPV6 is not set
      
      [   46.888632] IP: [<c220705a>] setup_udp_tunnel_sock+0x6/0x4f
      [   46.891355] *pdpt = 0000000000000000 *pde = f000ff53f000ff53
      [   46.893918] Oops: 0002 [#1] PREEMPT
      [   46.896014] CPU: 0 PID: 1 Comm: swapper Not tainted 4.7.0-rc4-00001-g8700e3e7 #1
      [   46.900280] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
      [   46.904905] task: cf06c040 ti: cf05e000 task.ti: cf05e000
      [   46.907854] EIP: 0060:[<c220705a>] EFLAGS: 00210246 CPU: 0
      [   46.911137] EIP is at setup_udp_tunnel_sock+0x6/0x4f
      [   46.914070] EAX: 00000044 EBX: 00000001 ECX: cf05fef0 EDX: ca8142e0
      [   46.917236] ESI: c2c4505b EDI: cf05fef0 EBP: cf05fed0 ESP: cf05fed0
      [   46.919836]  DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068
      [   46.922046] CR0: 80050033 CR2: 000001fc CR3: 02cec000 CR4: 000006b0
      [   46.924550] Stack:
      [   46.926014]  cf05ff10 c1fd4657 ca8142e0 0000000a 00000000 00000000 0000b712 00000008
      [   46.931274]  00000000 6bb5bd01 c1fd48de 00000000 00000000 cf05ff1c 00000000 00000000
      [   46.936122]  cf05ff1c c1fd4bdf 00000000 cf05ff28 c2c4507b ffffffff cf05ff88 c2bf1c74
      [   46.942350] Call Trace:
      [   46.944403]  [<c1fd4657>] rxe_setup_udp_tunnel+0x8f/0x99
      [   46.947689]  [<c1fd48de>] ? net_to_rxe+0x4e/0x4e
      [   46.950567]  [<c1fd4bdf>] rxe_net_init+0xe/0xa4
      [   46.953147]  [<c2c4507b>] rxe_module_init+0x20/0x4c
      [   46.955448]  [<c2bf1c74>] do_one_initcall+0x89/0x113
      [   46.957797]  [<c2bf15eb>] ? set_debug_rodata+0xf/0xf
      [   46.959966]  [<c2bf1dbc>] ? kernel_init_freeable+0xbe/0x15b
      [   46.962262]  [<c2bf1ddc>] kernel_init_freeable+0xde/0x15b
      [   46.964418]  [<c232eb54>] kernel_init+0x8/0xd0
      [   46.966618]  [<c2333122>] ret_from_kernel_thread+0xe/0x24
      [   46.969592]  [<c232eb4c>] ? rest_init+0x6f/0x6f
      
      Fixes: 8700e3e7 ("Soft RoCE driver")
      Signed-off-by: default avatarYonatan Cohen <yonatanc@mellanox.com>
      Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
      Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
      dfdd6158
    • Maor Gottlieb's avatar
      IB/mlx5: Set source mac address in FTE · ee3da804
      Maor Gottlieb authored
      Set the source mac address in the FTE when L2 specification
      is provided.
      
      Fixes: 038d2ef8 ('IB/mlx5: Add flow steering support')
      Signed-off-by: default avatarMaor Gottlieb <maorg@mellanox.com>
      Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
      Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
      ee3da804
    • Noa Osherovich's avatar
      IB/mlx5: Enable MAD_IFC commands for IB ports only · 7fae6655
      Noa Osherovich authored
      MAD_IFC command is supported only for physical functions (PF)
      and when physical port is IB. The proposed fix enforces it.
      
      Fixes: d603c809 ("IB/mlx5: Fix decision on using MAD_IFC")
      Reported-by: default avatarDavid Chang <dchang@suse.com>
      Signed-off-by: default avatarNoa Osherovich <noaos@mellanox.com>
      Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
      Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
      7fae6655
    • Kamal Heib's avatar
      IB/mlx4: Diagnostic HW counters are not supported in slave mode · 69d269d3
      Kamal Heib authored
      Modify the mlx4_ib_diag_counters() to avoid the following error in the
      hypervisor when the slave tries to query the hardware counters in SR-IOV
      mode.
      
      mlx4_core 0000:81:00.0: Unknown command:0x30 accepted from slave:1
      
      Fixes: 3f85f2aa ("IB/mlx4: Add diagnostic hardware counters")
      Signed-off-by: default avatarKamal Heib <kamalh@mellanox.com>
      Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
      Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
      69d269d3
    • Jack Morgenstein's avatar
      IB/mlx4: Use correct subnet-prefix in QP1 mads under SR-IOV · 8ec07bf8
      Jack Morgenstein authored
      When sending QP1 MAD packets which use a GRH, the source GID
      (which consists of the 64-bit subnet prefix, and the 64 bit port GUID)
      must be included in the packet GRH.
      
      For SR-IOV, a GID cache is used, since the source GID needs to be the
      slave's source GID, and not the Hypervisor's GID. This cache also
      included a subnet_prefix. Unfortunately, the subnet_prefix field in
      the cache was never initialized (to the default subnet prefix 0xfe80::0).
      As a result, this field remained all zeroes.  Therefore, when SR-IOV
      was active, all QP1 packets which included a GRH had a source GID
      subnet prefix of all-zeroes.
      
      However, the subnet-prefix should initially be 0xfe80::0 (the default
      subnet prefix). In addition, if OpenSM modifies a port's subnet prefix,
      the new subnet prefix must be used in the GRH when sending QP1 packets.
      To fix this we now initialize the subnet prefix in the SR-IOV GID cache
      to the default subnet prefix. We update the cached value if/when OpenSM
      modifies the port's subnet prefix. We take this cached value when sending
      QP1 packets when SR-IOV is active.
      
      Note that the value is stored as an atomic64. This eliminates any need
      for locking when the subnet prefix is being updated.
      
      Note also that we depend on the FW generating the "port management change"
      event for tracking subnet-prefix changes performed by OpenSM. If running
      early FW (before 2.9.4630), subnet prefix changes will not be tracked (but
      the default subnet prefix still will be stored in the cache; therefore
      users who do not modify the subnet prefix will not have a problem).
      IF there is a need for such tracking also for early FW, we will add that
      capability in a subsequent patch.
      
      Fixes: 1ffeb2eb ("IB/mlx4: SR-IOV IB context objects and proxy/tunnel SQP support")
      Signed-off-by: default avatarJack Morgenstein <jackm@dev.mellanox.co.il>
      Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
      Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
      8ec07bf8
    • Jack Morgenstein's avatar
      IB/mlx4: Fix code indentation in QP1 MAD flow · baa0be70
      Jack Morgenstein authored
      The indentation in the QP1 GRH flow in procedure build_mlx_header is
      really confusing. Fix it, in preparation for a commit which touches
      this code.
      
      Fixes: 1ffeb2eb ("IB/mlx4: SR-IOV IB context objects and proxy/tunnel SQP support")
      Signed-off-by: default avatarJack Morgenstein <jackm@dev.mellanox.co.il>
      Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
      Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
      baa0be70
    • Alex Vesker's avatar
      IB/mlx4: Fix incorrect MC join state bit-masking on SR-IOV · e5ac40cd
      Alex Vesker authored
      Because of an incorrect bit-masking done on the join state bits, when
      handling a join request we failed to detect a difference between the
      group join state and the request join state when joining as send only
      full member (0x8). This caused the MC join request not to be sent.
      This issue is relevant only when SRIOV is enabled and SM supports
      send only full member.
      
      This fix separates scope bits and join states bits a nibble each.
      
      Fixes: b9c5d6a6 ('IB/mlx4: Add multicast group (MCG) paravirtualization for SR-IOV')
      Signed-off-by: default avatarAlex Vesker <valex@mellanox.com>
      Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
      Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
      e5ac40cd
    • Alex Vesker's avatar
      IB/ipoib: Don't allow MC joins during light MC flush · 344bacca
      Alex Vesker authored
      This fix solves a race between light flush and on the fly joins.
      Light flush doesn't set the device to down and unset IPOIB_OPER_UP
      flag, this means that if while flushing we have a MC join in progress
      and the QP was attached to BC MGID we can have a mismatches when
      re-attaching a QP to the BC MGID.
      
      The light flush would set the broadcast group to NULL causing an on
      the fly join to rejoin and reattach to the BC MCG as well as adding
      the BC MGID to the multicast list. The flush process would later on
      remove the BC MGID and detach it from the QP. On the next flush
      the BC MGID is present in the multicast list but not found when trying
      to detach it because of the previous double attach and single detach.
      
      [18332.714265] ------------[ cut here ]------------
      [18332.717775] WARNING: CPU: 6 PID: 3767 at drivers/infiniband/core/verbs.c:280 ib_dealloc_pd+0xff/0x120 [ib_core]
      ...
      [18332.775198] Hardware name: Red Hat KVM, BIOS Bochs 01/01/2011
      [18332.779411]  0000000000000000 ffff8800b50dfbb0 ffffffff813fed47 0000000000000000
      [18332.784960]  0000000000000000 ffff8800b50dfbf0 ffffffff8109add1 0000011832f58300
      [18332.790547]  ffff880226a596c0 ffff880032482000 ffff880032482830 ffff880226a59280
      [18332.796199] Call Trace:
      [18332.798015]  [<ffffffff813fed47>] dump_stack+0x63/0x8c
      [18332.801831]  [<ffffffff8109add1>] __warn+0xd1/0xf0
      [18332.805403]  [<ffffffff8109aebd>] warn_slowpath_null+0x1d/0x20
      [18332.809706]  [<ffffffffa025d90f>] ib_dealloc_pd+0xff/0x120 [ib_core]
      [18332.814384]  [<ffffffffa04f3d7c>] ipoib_transport_dev_cleanup+0xfc/0x1d0 [ib_ipoib]
      [18332.820031]  [<ffffffffa04ed648>] ipoib_ib_dev_cleanup+0x98/0x110 [ib_ipoib]
      [18332.825220]  [<ffffffffa04e62c8>] ipoib_dev_cleanup+0x2d8/0x550 [ib_ipoib]
      [18332.830290]  [<ffffffffa04e656f>] ipoib_uninit+0x2f/0x40 [ib_ipoib]
      [18332.834911]  [<ffffffff81772a8a>] rollback_registered_many+0x1aa/0x2c0
      [18332.839741]  [<ffffffff81772bd1>] rollback_registered+0x31/0x40
      [18332.844091]  [<ffffffff81773b18>] unregister_netdevice_queue+0x48/0x80
      [18332.848880]  [<ffffffffa04f489b>] ipoib_vlan_delete+0x1fb/0x290 [ib_ipoib]
      [18332.853848]  [<ffffffffa04df1cd>] delete_child+0x7d/0xf0 [ib_ipoib]
      [18332.858474]  [<ffffffff81520c08>] dev_attr_store+0x18/0x30
      [18332.862510]  [<ffffffff8127fe4a>] sysfs_kf_write+0x3a/0x50
      [18332.866349]  [<ffffffff8127f4e0>] kernfs_fop_write+0x120/0x170
      [18332.870471]  [<ffffffff81207198>] __vfs_write+0x28/0xe0
      [18332.874152]  [<ffffffff810e09bf>] ? percpu_down_read+0x1f/0x50
      [18332.878274]  [<ffffffff81208062>] vfs_write+0xa2/0x1a0
      [18332.881896]  [<ffffffff812093a6>] SyS_write+0x46/0xa0
      [18332.885632]  [<ffffffff810039b7>] do_syscall_64+0x57/0xb0
      [18332.889709]  [<ffffffff81883321>] entry_SYSCALL64_slow_path+0x25/0x25
      [18332.894727] ---[ end trace 09ebbe31f831ef17 ]---
      
      Fixes: ee1e2c82 ("IPoIB: Refresh paths instead of flushing them on SM change events")
      Signed-off-by: default avatarAlex Vesker <valex@mellanox.com>
      Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
      Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
      344bacca
    • Alexey Khoroshilov's avatar
      IB/rxe: fix GFP_KERNEL in spinlock context · 5e102b3b
      Alexey Khoroshilov authored
      There is skb_clone(skb, GFP_KERNEL) in spinlock context
      in rxe_rcv_mcast_pkt().
      
      Found by Linux Driver Verification project (linuxtesting.org).
      Signed-off-by: default avatarAlexey Khoroshilov <khoroshilov@ispras.ru>
      Acked-by: default avatarMoni Shoua <monis@mellanox.com>
      Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
      5e102b3b
    • Greg Kroah-Hartman's avatar
      Merge tag 'usb-serial-4.8-rc7' of... · e06226e6
      Greg Kroah-Hartman authored
      Merge tag 'usb-serial-4.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
      
      Johan writes:
      
      USB-serial fixes for v4.8-rc7
      
      Here's another Infineon flashloader device id.
      Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
      e06226e6
    • Arnd Bergmann's avatar
      Merge tag 'samsung-fixes-4.8-2' of... · 64086491
      Arnd Bergmann authored
      Merge tag 'samsung-fixes-4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into fixes
      
      Pull "ARM: exynos: Fixes for v4.8, secound round" from Krzysztof Kozłowski:
      
      1. A recent change in populating irqchip devices from Device Tree
         broke Suspend to RAM on Exynos boards due to lack of probing of
         PMU (Power Management Unit) driver.  Multiple drivers attach to
         the PMU's DT node: irqchip, clock controller and PMU platform
         driver for handling suspend.  The new irqchip code marked the
         PMU's DT node as OF_POPULATED but we need to attach to this
         node also PMU platform driver.
      
      2. Add Javier as additional reviewer for Exynos patches.
      
      * tag 'samsung-fixes-4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
        ARM: EXYNOS: Clear OF_POPULATED flag from PMU node in IRQ init callback
        MAINTAINERS: Add myself as reviewer for Samsung Exynos support
      64086491
    • Alan Stern's avatar
      USB: change bInterval default to 10 ms · 08c5cd37
      Alan Stern authored
      Some full-speed mceusb infrared transceivers contain invalid endpoint
      descriptors for their interrupt endpoints, with bInterval set to 0.
      In the past they have worked out okay with the mceusb driver, because
      the driver sets the bInterval field in the descriptor to 1,
      overwriting whatever value may have been there before.  However, this
      approach was never sanctioned by the USB core, and in fact it does not
      work with xHCI controllers, because they use the bInterval value that
      was present when the configuration was installed.
      
      Currently usbcore uses 32 ms as the default interval if the value in
      the endpoint descriptor is invalid.  It turns out that these IR
      transceivers don't work properly unless the interval is set to 10 ms
      or below.  To work around this mceusb problem, this patch changes the
      endpoint-descriptor parsing routine, making the default interval value
      be 10 ms rather than 32 ms.
      Signed-off-by: default avatarAlan Stern <stern@rowland.harvard.edu>
      Tested-by: default avatarWade Berrier <wberrier@gmail.com>
      CC: <stable@vger.kernel.org>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      08c5cd37
    • Tony Lindgren's avatar
      usb: musb: Fix tusb6010 compile error on blackfin · ed3d6d0a
      Tony Lindgren authored
      We have CONFIG_BLACKFIN ifdef redefining all musb registers in
      musb_regs.h and tusb6010.h is never included causing a build
      error with blackfin-allmodconfig and COMPILE_TEST.
      
      Let's fix the issue by not building tusb6010 if CONFIG_BLACKFIN
      is selected.
      Reported-by: default avatarkbuild test robot <fengguang.wu@intel.com>
      Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
      Signed-off-by: default avatarBin Liu <b-liu@ti.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      ed3d6d0a
    • Matt Fleming's avatar
      perf/x86/amd: Make HW_CACHE_REFERENCES and HW_CACHE_MISSES measure L2 · 080fe0b7
      Matt Fleming authored
      While the Intel PMU monitors the LLC when perf enables the
      HW_CACHE_REFERENCES and HW_CACHE_MISSES events, these events monitor
      L1 instruction cache fetches (0x0080) and instruction cache misses
      (0x0081) on the AMD PMU.
      
      This is extremely confusing when monitoring the same workload across
      Intel and AMD machines, since parameters like,
      
        $ perf stat -e cache-references,cache-misses
      
      measure completely different things.
      
      Instead, make the AMD PMU measure instruction/data cache and TLB fill
      requests to the L2 and instruction/data cache and TLB misses in the L2
      when HW_CACHE_REFERENCES and HW_CACHE_MISSES are enabled,
      respectively. That way the events measure unified caches on both
      platforms.
      Signed-off-by: default avatarMatt Fleming <matt@codeblueprint.co.uk>
      Acked-by: default avatarPeter Zijlstra <peterz@infradead.org>
      Cc: <stable@vger.kernel.org>
      Cc: Borislav Petkov <bp@alien8.de>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Link: http://lkml.kernel.org/r/1472044328-21302-1-git-send-email-matt@codeblueprint.co.ukSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
      080fe0b7