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2016-02-13net: mvneta: Fix the CPU choice in mvneta_percpu_electGregory CLEMENT
When passing to the management of multiple RX queue, the mvneta_percpu_elect function was broken. The use of the modulo can lead to elect the wrong cpu. For example with rxq_def=2, if the CPU 2 goes offline and then online, we ended with the third RX queue activated in the same time on CPU 0 and CPU2, which lead to a kernel crash. With this fix, we don't try to get "the closer" CPU if the default CPU is gone, now we just use CPU 0 which always be there. Thanks to this, the code becomes more readable, easier to maintain and more predicable. Cc: stable@vger.kernel.org Fixes: 2dcf75e2793c ("net: mvneta: Associate RX queues with each CPU") Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-13net: mvneta: Fix for_each_present_cpu usageGregory CLEMENT
This patch convert the for_each_present in on_each_cpu, instead of applying on the present cpus it will be applied only on the online cpus. This fix a bug reported on http://thread.gmane.org/gmane.linux.ports.arm.kernel/468173. Using the macro on_each_cpu (instead of a for_each_* loop) also ensures that all the calls will be done all at once. Fixes: f86428854480 ("net: mvneta: Statically assign queues to CPUs") Reported-by: Stefan Roese <stefan.roese@gmail.com> Suggested-by: Jisheng Zhang <jszhang@marvell.com> Suggested-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-13vsock: Fix blocking ops call in prepare_to_waitLaura Abbott
We receoved a bug report from someone using vmware: WARNING: CPU: 3 PID: 660 at kernel/sched/core.c:7389 __might_sleep+0x7d/0x90() do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffff810fa68d>] prepare_to_wait+0x2d/0x90 Modules linked in: vmw_vsock_vmci_transport vsock snd_seq_midi snd_seq_midi_event snd_ens1371 iosf_mbi gameport snd_rawmidi snd_ac97_codec ac97_bus snd_seq coretemp snd_seq_device snd_pcm snd_timer snd soundcore ppdev crct10dif_pclmul crc32_pclmul ghash_clmulni_intel vmw_vmci vmw_balloon i2c_piix4 shpchp parport_pc parport acpi_cpufreq nfsd auth_rpcgss nfs_acl lockd grace sunrpc btrfs xor raid6_pq 8021q garp stp llc mrp crc32c_intel serio_raw mptspi vmwgfx drm_kms_helper ttm drm scsi_transport_spi mptscsih e1000 ata_generic mptbase pata_acpi CPU: 3 PID: 660 Comm: vmtoolsd Not tainted 4.2.0-0.rc1.git3.1.fc23.x86_64 #1 Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 05/20/2014 0000000000000000 0000000049e617f3 ffff88006ac37ac8 ffffffff818641f5 0000000000000000 ffff88006ac37b20 ffff88006ac37b08 ffffffff810ab446 ffff880068009f40 ffffffff81c63bc0 0000000000000061 0000000000000000 Call Trace: [<ffffffff818641f5>] dump_stack+0x4c/0x65 [<ffffffff810ab446>] warn_slowpath_common+0x86/0xc0 [<ffffffff810ab4d5>] warn_slowpath_fmt+0x55/0x70 [<ffffffff8112551d>] ? debug_lockdep_rcu_enabled+0x1d/0x20 [<ffffffff810fa68d>] ? prepare_to_wait+0x2d/0x90 [<ffffffff810fa68d>] ? prepare_to_wait+0x2d/0x90 [<ffffffff810da2bd>] __might_sleep+0x7d/0x90 [<ffffffff812163b3>] __might_fault+0x43/0xa0 [<ffffffff81430477>] copy_from_iter+0x87/0x2a0 [<ffffffffa039460a>] __qp_memcpy_to_queue+0x9a/0x1b0 [vmw_vmci] [<ffffffffa0394740>] ? qp_memcpy_to_queue+0x20/0x20 [vmw_vmci] [<ffffffffa0394757>] qp_memcpy_to_queue_iov+0x17/0x20 [vmw_vmci] [<ffffffffa0394d50>] qp_enqueue_locked+0xa0/0x140 [vmw_vmci] [<ffffffffa039593f>] vmci_qpair_enquev+0x4f/0xd0 [vmw_vmci] [<ffffffffa04847bb>] vmci_transport_stream_enqueue+0x1b/0x20 [vmw_vsock_vmci_transport] [<ffffffffa047ae05>] vsock_stream_sendmsg+0x2c5/0x320 [vsock] [<ffffffff810fabd0>] ? wake_atomic_t_function+0x70/0x70 [<ffffffff81702af8>] sock_sendmsg+0x38/0x50 [<ffffffff81702ff4>] SYSC_sendto+0x104/0x190 [<ffffffff8126e25a>] ? vfs_read+0x8a/0x140 [<ffffffff817042ee>] SyS_sendto+0xe/0x10 [<ffffffff8186d9ae>] entry_SYSCALL_64_fastpath+0x12/0x76 transport->stream_enqueue may call copy_to_user so it should not be called inside a prepare_to_wait. Narrow the scope of the prepare_to_wait to avoid the bad call. This also applies to vsock_stream_recvmsg as well. Reported-by: Vinson Lee <vlee@freedesktop.org> Tested-by: Vinson Lee <vlee@freedesktop.org> Signed-off-by: Laura Abbott <labbott@fedoraproject.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-13r8169:fix system hange problem.Chun-Hao Lin
There are typos in setting RTL8168H hardware parameters. If system install another version driver that may cuase system hang. Signed-off-by: Chunhao Lin <hau@realtek.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-13ipv4: fix memory leaks in ip_cmsg_send() callersEric Dumazet
Dmitry reported memory leaks of IP options allocated in ip_cmsg_send() when/if this function returns an error. Callers are responsible for the freeing. Many thanks to Dmitry for the report and diagnostic. Reported-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-13net: mvpp2: Return correct error codesAmitoj Kaur Chawla
The return value of kzalloc on failure of allocation of memory should be -ENOMEM and not -1. Found using Coccinelle. A simplified version of the semantic patch used is: //<smpl> @@ expression *e; position p,q; @@ e@q = kzalloc(...); if@p (e == NULL) { ... return - -1 + -ENOMEM ; } //</smpl> This function may also return -1 after calling mpp2_prs_tcam_port_map_get. So that the function consistently returns meaningful error values on failure, the -1 is changed to -EINVAL. Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-13net: cavium: liquidio: Return correct error codeAmitoj Kaur Chawla
The return value of vmalloc on failure of allocation of memory should be -ENOMEM and not -1. Found using Coccinelle. A simplified version of the semantic patch used is: //<smpl> @@ expression *e; identifier l1; position p,q; @@ e@q = vmalloc(...); if@p (e == NULL) { ... goto l1; } l1: ... return -1 + -ENOMEM ; //</smpl The single call site of the containing function checks whether the returned value is -1, so this check is changed as well. The single call site of this call site, however, only checks whether the value is not 0, so no further change was required. Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-13bonding: Fix ARP monitor validationJay Vosburgh
The current logic in bond_arp_rcv will accept an incoming ARP for validation if (a) the receiving slave is either "active" (which includes the currently active slave, or the current ARP slave) or, (b) there is a currently active slave, and it has received an ARP since it became active. For case (b), the receiving slave isn't the currently active slave, and is receiving the original broadcast ARP request, not an ARP reply from the target. This logic can fail if there is no currently active slave. In this situation, the ARP probe logic cycles through all slaves, assigning each in turn as the "current_arp_slave" for one arp_interval, then setting that one as "active," and sending an ARP probe from that slave. The current logic expects the ARP reply to arrive on the sending current_arp_slave, however, due to switch FDB updating delays, the reply may be directed to another slave. This can arise if the bonding slaves and switch are working, but the ARP target is not responding. When the ARP target recovers, a condition may result wherein the ARP target host replies faster than the switch can update its forwarding table, causing each ARP reply to be sent to the previous current_arp_slave. This will never pass the logic in bond_arp_rcv, as neither of the above conditions (a) or (b) are met. Some experimentation on a LAN shows ARP reply round trips in the 200 usec range, but my available switches never update their FDB in less than 4000 usec. This patch changes the logic in bond_arp_rcv to additionally accept an ARP reply for validation on any slave if there is a current ARP slave and it sent an ARP probe during the previous arp_interval. Fixes: aeea64ac717a ("bonding: don't trust arp requests unless active slave really works") Cc: Veaceslav Falico <vfalico@gmail.com> Cc: Andy Gospodarek <gospo@cumulusnetworks.com> Signed-off-by: Jay Vosburgh <jay.vosburgh@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-02-13ALSA: usb-audio: avoid freeing umidi object twiceAndrey Konovalov
The 'umidi' object will be free'd on the error path by snd_usbmidi_free() when tearing down the rawmidi interface. So we shouldn't try to free it in snd_usbmidi_create() after having registered the rawmidi interface. Found by KASAN. Signed-off-by: Andrey Konovalov <andreyknvl@gmail.com> Acked-by: Clemens Ladisch <clemens@ladisch.de> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-02-12Merge tag 'pci-v4.5-fixes-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI fixes from Bjorn Helgaas: "These are some Renesas binding updates for PCI host controllers, a Broadcom fix for a regression we added in v4.5-rc1, and a fix for an AER use-after-free problem that can cause memory corruption. Summary: AER: Flush workqueue on device remove to avoid use-after-free (Sebastian Andrzej Siewior) Broadcom iProc host bridge driver: Allow multiple devices except on PAXC (Ray Jui) Renesas R-Car host bridge driver: Add gen2 device tree support for r8a7793 (Simon Horman) Add device tree support for r8a7793 (Simon Horman)" * tag 'pci-v4.5-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI: rcar: Add device tree support for r8a7793 PCI: rcar: Add gen2 device tree support for r8a7793 PCI: iproc: Allow multiple devices except on PAXC PCI/AER: Flush workqueue on device remove to avoid use-after-free
2016-02-12Merge remote-tracking branches 'spi/fix/atmel', 'spi/fix/bcm2835aux', ↵Mark Brown
'spi/fix/fsl-espi', 'spi/fix/imx', 'spi/fix/loopback' and 'spi/fix/omap2-mcspi' into spi-linus
2016-02-12spi: omap2-mcspi: Fix PM regression with deferred probe for pm_runtime_reinitTony Lindgren
Commit 5de85b9d57ab ("PM / runtime: Re-init runtime PM states at probe error and driver unbind") introduced pm_runtime_reinit() that is used to reinitialize PM runtime after -EPROBE_DEFER. This allows shutting down the device after a failed probe. However, for drivers using pm_runtime_use_autosuspend() this can cause a state where suspend callback is never called after -EPROBE_DEFER. On the following device driver probe, hardware state is different from the PM runtime state causing omap_device to produce the following error: omap_device_enable() called from invalid state 1 And with omap_device and omap hardware being picky for PM, this will block any deeper idle states in hardware. The solution is to fix the drivers to follow the PM runtime documentation: 1. For sections of code that needs the device disabled, use pm_runtime_put_sync_suspend() if pm_runtime_set_autosuspend() has been set. 2. For driver exit code, use pm_runtime_dont_use_autosuspend() before pm_runtime_put_sync() if pm_runtime_use_autosuspend() has been set. Fixes: 5de85b9d57ab ("PM / runtime: Re-init runtime PM states at probe error and driver unbind") Cc: linux-spi@vger.kernel.org Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Kevin Hilman <khilman@baylibre.com> Cc: Mark Brown <broonie@kernel.org> Cc: Nishanth Menon <nm@ti.com> Cc: Rafael J. Wysocki <rafael@kernel.org> Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: Tero Kristo <t-kristo@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-12Revert "clk: qcom: Specify LE device endianness"Stephen Boyd
This reverts commit 329cabcecf94d8d7821e729dda284ba9dec44c87. The commit that caused us to specify LE device endianness here, 29bb45f25ff3 (regmap-mmio: Use native endianness for read/write, 2015-10-29), has been reverted in mainline so now when we specify LE it actively breaks big endian kernels because the byte swapping in regmap-mmio is incorrect. Let's revert this change because it will 1) fix the big endian kernels and 2) be redundant to specify LE because that will become the default soon. Cc: Kevin Hilman <khilman@linaro.org> Tested-by: Kevin Hilman <khilman@baylibre.com> Cc: Mark Brown <broonie@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-02-12ASoC: qcom: Don't specify LE device endiannessStephen Boyd
This reverts commit 18560a4e3 (ASoC: qcom: Specify LE device endianness). The commit that caused us to specify LE device endianness here, 29bb45f25ff3 (regmap-mmio: Use native endianness for read/write, 2015-10-29), has been reverted in mainline so now when we specify LE it actively breaks big endian kernels because the byte swapping in regmap-mmio is incorrect. Let's revert this change because it will 1) fix the big endian kernels and 2) be redundant to specify LE because that will become the default soon. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-02-12rtc: s3c: Document required clocks in the DT bindingJavier Martinez Canillas
The S3C Real Time Clock driver requires the clock and source clock to be defined in the device node but that requirement is not documented. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Rob Herring <robh@kernel.org>
2016-02-12serial: fsl-imx-uart: Fix typo in fsl,dte-mode descriptionFabio Estevam
We should say "The uart works in DCE mode". Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Rob Herring <robh@kernel.org>
2016-02-12dt-bindings: arm, gic-v3: require that reserved cells are always 0Will Deacon
The arm,gic-v3 binding was written with good intentions and doesn't enforce interrupt-cells to be 3, therefore making it easy to extend the irq description in future if necessary: > Cells 4 and beyond are reserved for future use. Unfortunately, this sentence is immediately followed up with: > When the 1st cell has a value of 0 or 1, cells 4 and beyond act as > padding, and may be ignored. It is recommended that padding cells > have a value of 0. Consequently, any extensions to the PPI or SPI interrupt specifiers must be able to work with random crap from legacy DTs, effectively necessitating a new interrupt type in the first cell. Sigh. This patch fixes the text so that additional, reserved cells are required to be zero. This looks like a reasonable thing to require and is already satisifed by the .dts files in-tree. Cc: Mark Rutland <mark.rutland@arm.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Rob Herring <robh@kernel.org>
2016-02-12Merge branch 'akpm'(patches from Andrew)Linus Torvalds
Merge fixes from Andrew Morton: "10 fixes" The lockdep hlist conversion is in the locking tree too, waiting for the next merge window. Andrew thought it should go in now. I'll take it, since it fixes a real problem and looks trivially correct (famous last words). * emailed patches from Andrew Morton <akpm@linux-foundation.org>: arch/x86/Kconfig: CONFIG_X86_UV should depend on CONFIG_EFI mm: fix pfn_t vs highmem kernel/locking/lockdep.c: convert hash tables to hlists mm,thp: fix spellos in describing __HAVE_ARCH_FLUSH_PMD_TLB_RANGE mm,thp: khugepaged: call pte flush at the time of collapse mm/backing-dev.c: fix error path in wb_init() mm, dax: check for pmd_none() after split_huge_pmd() vsprintf: kptr_restrict is okay in IRQ when 2 mm: fix filemap.c kernel doc warning ubsan: cosmetic fix to Kconfig text
2016-02-12drm/radeon: Fix WARN_ON if DRM_DP_AUX_CHARDEV is enabledLukas Wunner
Rafael Antognolli's new DRM_DP_AUX_CHARDEV feature causes a WARN_ON if drm_dp_aux->dev == drm_connector->kdev and drm_dp_aux_unregister() is called after drm_connector_unregister(). radeon is the only driver affected by this besides i915. (amdgpu calls drm_dp_aux_unregister() before drm_connector_unregister().) Cc: Rafael Antognolli <rafael.antognolli@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Lukas Wunner <lukas@wunner.de> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-02-12drm/amdgpu/vi: move uvd tiling config setup into uvd codeAlex Deucher
Split uvd and gfx programming. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-02-12drm/amdgpu/vi: move sdma tiling config setup into sdma codeAlex Deucher
Split sdma and gfx programming. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-02-12drm/amdgpu/cik: move uvd tiling config setup into uvd codeAlex Deucher
Split uvd and gfx programming. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-02-12drm/amdgpu/cik: move sdma tiling config setup into sdma codeAlex Deucher
Split sdma and gfx programming. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-02-12drm/amdgpu/gfx7: rework gpu_init()Alex Deucher
Split the sw and hw parts into separate functions. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-02-12drm/amdgpu/gfx: clean up harvest configuration (v2)Alex Deucher
Read back harvest configuration from registers and simplify calculations. No need to program the raster config registers. These are programmed as golden registers and the user mode drivers program them as well. v2: rebase on Tom's patches Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-02-12drm/amdgpu: fix coding style in amdgpu_ctx.cChristian König
Don't use pointer arithmetic and fix the indentation. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2016-02-12drm/amdgpu: nuke the kernel contextChristian König
Not used any more. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2016-02-12drm/amdgpu: use separate scheduler entity for VCE submissionsChristian König
This allows us to remove the kernel context and use a better priority for the submissions. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2016-02-12drm/amdgpu: use separate scheduler entity for UVD submissionsChristian König
This allows us to remove the kernel context and use a better priority for the submissions. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2016-02-12drm/amdgpu: use separate scheduler entitiy for buffer movesChristian König
This allows us to remove the global kernel context. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2016-02-12drm/amdgpu: use SDMA round robin for VM updates v3Christian König
Distribute the load on both rings. v2: use a loop for the initialization v3: agd: rebase on upstream Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2016-02-12drm/amdgpu: remove is_pte_ringChristian König
Not used for anything. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2016-02-12drm/amdgpu: use per VM entity for page table updates (v2)Christian König
Updates from different VMs can be processed independently. v2: agd: rebase on upstream Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2016-02-12drm/amdgpu: remove the userptr rmn->lockChristian König
Avoid a lock inversion problem by just using the mmap_sem to protect the entries of the intervall tree. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
2016-02-12drm/amd/include: Update dce 8 headers for dalHarry Wentland
Signed-off-by: Harry Wentland <harry.wentland@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2016-02-12drm/amdgpu/gfx7: Fix whitespaceTom St Denis
Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2016-02-12drm/amdgpu/gfx7: Simplify wptr/rptr functionsTom St Denis
Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2016-02-12drm/amdgpu/gfx7: LOC reduction in gfx_v7_0_setup_rbTom St Denis
Reduce for loop with bitmask to simple complement and mask Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2016-02-12drm/amdgpu/gfx7: Simplify bitmask creationTom St Denis
Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2016-02-12drm/amdgpu/gfx7: Reduce linecount in table initTom St Denis
Replaces switch statements with direct assignments to reduce line count significantly. Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2016-02-12IB/mlx5: Fix RC transport send queue overhead computationLeon Romanovsky
Fix the RC QPs send queue overhead computation to take into account two additional segments in the WQE which are needed for registration operations. The ATOMIC and UMR segments can't coexist together, so chose maximum out of them. The commit 9e65dc371b5c ("IB/mlx5: Fix RC transport send queue overhead computation") was intended to update RC transport as commit messages states, but added the code to UC transport. Fixes: 9e65dc371b5c ("IB/mlx5: Fix RC transport send queue overhead computation") Signed-off-by: Kamal Heib <kamalh@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-02-12IB/ipoib: fix for rare multicast join race conditionAlex Estrin
A narrow window for race condition still exist between multicast join thread and *dev_flush workers. A kernel crash caused by prolong erratic link state changes was observed (most likely a faulty cabling): [167275.656270] BUG: unable to handle kernel NULL pointer dereference at 0000000000000020 [167275.665973] IP: [<ffffffffa05f8f2e>] ipoib_mcast_join+0xae/0x1d0 [ib_ipoib] [167275.674443] PGD 0 [167275.677373] Oops: 0000 [#1] SMP ... [167275.977530] Call Trace: [167275.982225] [<ffffffffa05f92f0>] ? ipoib_mcast_free+0x200/0x200 [ib_ipoib] [167275.992024] [<ffffffffa05fa1b7>] ipoib_mcast_join_task+0x2a7/0x490 [ib_ipoib] [167276.002149] [<ffffffff8109d5fb>] process_one_work+0x17b/0x470 [167276.010754] [<ffffffff8109e3cb>] worker_thread+0x11b/0x400 [167276.019088] [<ffffffff8109e2b0>] ? rescuer_thread+0x400/0x400 [167276.027737] [<ffffffff810a5aef>] kthread+0xcf/0xe0 Here was a hit spot: ipoib_mcast_join() { .............. rec.qkey = priv->broadcast->mcmember.qkey; ^^^^^^^ ..... } Proposed patch should prevent multicast join task to continue if link state change is detected. Signed-off-by: Alex Estrin <alex.estrin@intel.com> Changes from v4: - as suggested by Doug Ledford, optimized spinlock usage, i.e. ipoib_mcast_join() is called with lock held. Changes from v3: - sync with priv->lock before flag check. Chages from v2: - Move check for OPER_UP flag state to mcast_join() to ensure no event worker is in progress. - minor style fixes. Changes from v1: - No need to lock again if error detected. Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-02-12i2c: uniphier: fix typos in error messagesMasahiro Yamada
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-02-12i2c: omap: Fix PM regression with deferred probe for pm_runtime_reinitTony Lindgren
Commit 5de85b9d57ab ("PM / runtime: Re-init runtime PM states at probe error and driver unbind") introduced pm_runtime_reinit() that is used to reinitialize PM runtime after -EPROBE_DEFER. This allows shutting down the device after a failed probe. However, for drivers using pm_runtime_use_autosuspend() this can cause a state where suspend callback is never called after -EPROBE_DEFER. On the following device driver probe, hardware state is different from the PM runtime state causing omap_device to produce the following error: omap_device_enable() called from invalid state 1 And with omap_device and omap hardware being picky for PM, this will block any deeper idle states in hardware. The solution is to fix the drivers to follow the PM runtime documentation: 1. For sections of code that needs the device disabled, use pm_runtime_put_sync_suspend() if pm_runtime_set_autosuspend() has been set. 2. For driver exit code, use pm_runtime_dont_use_autosuspend() before pm_runtime_put_sync() if pm_runtime_use_autosuspend() has been set. Fixes: 5de85b9d57ab ("PM / runtime: Re-init runtime PM states at probe error and driver unbind") Signed-off-by: Tony Lindgren <tony@atomide.com> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-02-12MAINTAINERS: update Han's emailHan Xu
Update my email address from freescale to nxp. Signed-off-by: Han Xu <han.xu@nxp.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2016-02-12Merge tag 'mmc-v4.5-rc2' of git://git.linaro.org/people/ulf.hansson/mmcLinus Torvalds
Pull MMC fixes from Ulf Hansson: "Here are some mmc fixes intended for v4.5 rc4. MMC core: - Fix an sysfs ABI regression - Return an error in a specific error path dealing with mmc ioctls MMC host: - sdhci-pci|acpi: Fix card detect race for Intel BXT/APL - sh_mmcif: Correct TX DMA channel allocation - mmc_spi: Fix error handling for dma mapping errors - sdhci-of-at91: Fix an unbalance issue for the runtime PM usage count - pxamci: Fix the device-tree probe deferral path - pxamci: Fix read-only GPIO polarity" * tag 'mmc-v4.5-rc2' of git://git.linaro.org/people/ulf.hansson/mmc: Revert "mmc: block: don't use parameter prefix if built as module" mmc: sdhci-acpi: Fix card detect race for Intel BXT/APL mmc: sdhci-pci: Fix card detect race for Intel BXT/APL mmc: sdhci: Allow override of get_cd() called from sdhci_request() mmc: sdhci: Allow override of mmc host operations mmc: sh_mmcif: Correct TX DMA channel allocation mmc: block: return error on failed mmc_blk_get() mmc: pxamci: fix the device-tree probe deferral path mmc: mmc_spi: add checks for dma mapping error mmc: sdhci-of-at91: fix pm runtime unbalanced issue in error path mmc: pxamci: fix again read-only gpio detection polarity
2016-02-12Merge tag 'sound-4.5-rc4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "In this rc, we've got more volume than previous rc, unsurprisingly; the majority of updates in ASoC are about Intel drivers, and another major changes are the continued plumbing of ALSA timer bugs revealed by syzkaller fuzzer. Hopefully both settle down now. Other than that, HD-audio received a couple of code fixes as well as the usual quirks, and various small fixes are found for FireWire devices, ASoC codecs and drivers" * tag 'sound-4.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (50 commits) ASoC: arizona: fref must be limited in pseudo-fractional mode ASoC: sigmadsp: Fix missleading return value ALSA: timer: Fix race at concurrent reads ALSA: firewire-digi00x: Drop bogus const type qualifier on dot_scrt() ALSA: hda - Fix bad dereference of jack object ALSA: timer: Fix race between stop and interrupt ALSA: timer: Fix wrong instance passed to slave callbacks ASoC: Intel: Add module tags for common match module ASoC: Intel: Load the atom DPCM driver only ASoC: Intel: Create independent acpi match module ASoC: Intel: Revert "ASoC: Intel: fix ACPI probe regression with Atom DPCM driver" ALSA: dummy: Implement timer backend switching more safely ALSA: hda - Fix speaker output from VAIO AiO machines Revert "ALSA: hda - Fix noise on Gigabyte Z170X mobo" ALSA: firewire-tascam: remove needless member for control and status message ALSA: firewire-tascam: remove a flag for controller ALSA: firewire-tascam: add support for FW-1804 ALSA: firewire-tascam: fix NULL pointer dereference when model identification fails ALSA: hda - Fix static checker warning in patch_hdmi.c ASoC: Intel: Skylake: Remove autosuspend delay ...
2016-02-12Merge tag 'fbdev-fixes-4.5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux Pull fbdev fixes from Tomi Valkeinen: - fix omap2plus_defconfig to enable omapfb as it was in v4.4 - ocfb: fix timings for margins - s6e8ax0, da8xx-fb: fix compile warnings - mmp: fix build failure caused by bad printk parameters - imxfb: fix clock issue which kept the display off * tag 'fbdev-fixes-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux: video: fbdev: imxfb: Provide a reset mechanism fbdev: mmp: print IRQ resource using %pR format string fbdev: da8xx-fb: remove incorrect type cast fbdev: s6e8ax0: avoid unused function warnings ocfb: fix tgdel and tvdel timing parameters ARM: omap2plus_defconfig: update display configs
2016-02-12Merge tag 'scsi-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fixes from James Bottomley: "A set of seven fixes: Two regressions in the new hisi_sas arm driver, a blacklist entry for the marvell console which was causing a reset cascade without it, a race fix in the WRITE_SAME/DISCARD routines, a retry fix for the rdac driver, without which, it would prematurely return EIO and a couple of fixes for the hyper-v storvsc driver" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: block/sd: Return -EREMOTEIO when WRITE SAME and DISCARD are disabled SCSI: Add Marvell Console to VPD blacklist scsi_dh_rdac: always retry MODE SELECT on command lock violation storvsc: Use the specified target ID in device lookup storvsc: Install the storvsc specific timeout handler for FC devices hisi_sas: fix v1 hw check for slot error hisi_sas: add dependency for HAS_IOMEM
2016-02-12Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds
Pull drm amd fixes from Dave Airlie: "Been pretty quiet. This is an amdgpu fixes pull from AMD, a bunch of powerplay stability fixes, race fix, hibernate fix, and a possible circular locking fix" * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (21 commits) drm/amdgpu: fix issue with overlapping userptrs drm/radeon: hold reference to fences in radeon_sa_bo_new drm/amdgpu: remove unnecessary forward declaration drm/amdgpu: hold reference to fences in amdgpu_sa_bo_new (v2) drm/amdgpu: fix s4 resume drm/amdgpu/cz: plumb pg flags through to powerplay drm/amdgpu/tonga: plumb pg flags through to powerplay drma/dmgpu: move cg and pg flags into shared headers drm/amdgpu: remove unused cg defines drm/amdgpu: add a cgs interface to fetch cg and pg flags drm/amd/powerplay/tonga: disable vce pg drm/amd/powerplay/tonga: disable uvd pg drm/amd/powerplay/cz: disable vce pg drm/amd/powerplay/cz: disable uvd pg drm/amdgpu: be consistent with uvd cg flags drm/amdgpu: clean up vce pg flags for cz/st drm/amdgpu: handle vce pg flags properly drm/amdgpu: handle uvd pg flags properly drm/amdgpu/dpm/ci: switch over to the common pcie caps interface drm/amdgpu/cik: don't mess with aspm if gpu is root bus ...