1. 27 Sep, 2016 2 commits
  2. 23 Sep, 2016 3 commits
    • Arnd Bergmann's avatar
      usb: musb: da8xx: fix error handling message in probe · 984f3be5
      Arnd Bergmann authored
      We print an error message when platform_device_register_full()
      fails, but the initialization of the argument has been removed,
      as shown in this warning:
      
      drivers/usb/musb/da8xx.c: In function 'da8xx_probe':
      drivers/usb/musb/da8xx.c:521:3: error: 'ret' may be used uninitialized in this function [-Werror=maybe-uninitialized]
      
      This modifies the function to assign the return code before
      checking it, and does uses the same method in the check for
      usb_phy_generic_register() as well.
      
      Fixes: 947c49af ("usb: musb: da8xx: Remove mach code")
      Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
      Signed-off-by: default avatarBin Liu <b-liu@ti.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      984f3be5
    • Tony Lindgren's avatar
      usb: musb: Fix session based PM for first invalid VBUS · 2b9a8c40
      Tony Lindgren authored
      With the session bit based PM runtime working on musb, we've
      implemented few quirks to attempt to detect the current state of
      the hardware. One of the quirks is for invalid VBUS as peripheral,
      but it is not working in all cases.
      
      If we start musb on dm3730 as a peripheral with no cable connected,
      we will get the devctl 91 state once and will never idle as there
      are not further interrupts from musb. So we need to ignore the first
      devctl 91 state as there will be more interrupts if we're connected.
      
      The invalid VBUS state also can happen always when connected to
      certain USB hubs. Looks like musb on dm3730 can claim invalid VBUS
      with some hubs while 3717-evm and BeagleBone don't. This causes
      session as peripheral to fail for dm3730 with some hubs.
      
      This too is fixed by ignoring only the first invalid VBUS. When
      connected, we can just look at the session bit as that will clear
      automatically when the session ends.
      
      Fixes: 467d5c98 ("usb: musb: Implement session bit based runtime PM for musb-core")
      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>
      2b9a8c40
    • Tony Lindgren's avatar
      usb: musb: Fix PM runtime for disconnect after unconfigure · 4e719183
      Tony Lindgren authored
      If we unconfigure musb as a USB peripheral with cable connected,
      and then remove the cable, no interrupts will happen. And musb
      thinks we're still connected keeping the device active.
      
      Now with the session bit based PM runtime working for musb, we
      can fix this issue by calling musb irq_work. That rechecks the
      devctl register and reconfigures PM runtime based on the devctl.
      
      Fixes: 467d5c98 ("usb: musb: Implement session bit based runtime PM for musb-core")
      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>
      4e719183
  3. 22 Sep, 2016 1 commit
  4. 21 Sep, 2016 2 commits
    • Greg Kroah-Hartman's avatar
      usb: misc: legousbtower: Fix NULL pointer deference · 2fae9e5a
      Greg Kroah-Hartman authored
      This patch fixes a NULL pointer dereference caused by a race codition in
      the probe function of the legousbtower driver. It re-structures the
      probe function to only register the interface after successfully reading
      the board's firmware ID.
      
      The probe function does not deregister the usb interface after an error
      receiving the devices firmware ID. The device file registered
      (/dev/usb/legousbtower%d) may be read/written globally before the probe
      function returns. When tower_delete is called in the probe function
      (after an r/w has been initiated), core dev structures are deleted while
      the file operation functions are still running. If the 0 address is
      mappable on the machine, this vulnerability can be used to create a
      Local Priviege Escalation exploit via a write-what-where condition by
      remapping dev->interrupt_out_buffer in tower_write. A forged USB device
      and local program execution would be required for LPE. The USB device
      would have to delay the control message in tower_probe and accept
      the control urb in tower_open whilst guest code initiated a write to the
      device file as tower_delete is called from the error in tower_probe.
      
      This bug has existed since 2003. Patch tested by emulated device.
      Reported-by: default avatarJames Patrick-Evans <james@jmp-e.com>
      Tested-by: default avatarJames Patrick-Evans <james@jmp-e.com>
      Signed-off-by: default avatarJames Patrick-Evans <james@jmp-e.com>
      Cc: stable <stable@vger.kernel.org>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      2fae9e5a
    • Oliver Neukum's avatar
      cdc-acm: hardening against malicious devices · 2ad9d544
      Oliver Neukum authored
      This should fix the last holes against malicious devices
      still open in cdc-acm. It cannot go into stable due to
      the introduction of the common parser.
      The fix for stable already merged also covers the problems this patch
      fixes.
      Signed-off-by: default avatarOliver Neukum <oneukum@suse.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      2ad9d544
  5. 19 Sep, 2016 3 commits
  6. 18 Sep, 2016 7 commits
  7. 17 Sep, 2016 5 commits
  8. 16 Sep, 2016 17 commits
    • 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