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2017-01-23Merge branch 'drm-fixes-4.10' of git://people.freedesktop.org/~agd5f/linux ↵Dave Airlie
into drm-fixes A little bigger than usual since it's two weeks worth. Highlights: - Add support for new smc firmware on some new hainan variants - add support for SI chips that require special mc firmware - remove workarounds for issues fixed by new mc firmware - fix a regression in cursor handling - various VCE fixes - fix for UVD clockgating * 'drm-fixes-4.10' of git://people.freedesktop.org/~agd5f/linux: drm/amdgpu: add support for new hainan variants drm/radeon: add support for new hainan variants drm/amdgpu: change clock gating mode for uvd_v4. drm/amdgpu: fix program vce instance logic error. drm/amdgpu: fix bug set incorrect value to vce register Revert "drm/amdgpu: Only update the CUR_SIZE register when necessary" drm/amd/powerplay: refine vce dpm update code on Cz. drm/amdgpu: fix vm_fault_stop on gfx6 drm/amd/powerplay: fix vce cg logic error on CZ/St. drm/radeon: drop the mclk quirk for hainan drm/radeon: drop oland quirks drm/amdgpu: drop the mclk quirk for hainan drm/amdgpu: drop oland quirks drm/amdgpu/si: load special ucode for certain MC configs drm/radeon/si: load special ucode for certain MC configs
2017-01-23Merge branch 'msm-fixes-4.10-rc4' of ↵Dave Airlie
git://people.freedesktop.org/~robclark/linux into drm-fixes * 'msm-fixes-4.10-rc4' of git://people.freedesktop.org/~robclark/linux: drm/msm: fix potential null ptr issue in non-iommu case drm/msm/mdp5: rip out plane->pending tracking
2017-01-23Merge tag 'drm-misc-fixes-2017-01-13' of ↵Dave Airlie
git://anongit.freedesktop.org/git/drm-misc into drm-fixes A few more core fixes. * tag 'drm-misc-fixes-2017-01-13' of git://anongit.freedesktop.org/git/drm-misc: drm/probe-helpers: Drop locking from poll_enable drm: Fix broken VT switch with video=1366x768 option drm: Schedule the output_poll_work with 1s delay if we have delayed event
2017-01-23Merge tag 'drm-intel-fixes-2017-01-19' of ↵Dave Airlie
git://anongit.freedesktop.org/git/drm-intel into drm-fixes More GVT-g stuff than I'd like at this stage, but then again that's pretty new and isolated so I'm not too worried. * tag 'drm-intel-fixes-2017-01-19' of git://anongit.freedesktop.org/git/drm-intel: (26 commits) drm/i915: Ignore bogus plane coordinates on SKL when the plane is not visible drm/i915: Remove WaDisableLSQCROPERFforOCL KBL workaround. drm/i915/gvt: rewrite gt reset handler using new function intel_gvt_reset_vgpu_locked drm/i915/gvt: fix vGPU instance reuse issues by vGPU reset function drm/i915/gvt: introduce intel_vgpu_reset_mmio() to reset mmio space drm/i915/gvt: move mmio init/clean function to mmio.c drm/i915/gvt: introduce intel_vgpu_reset_cfg_space to reset configuration space drm/i915/gvt: move cfg space inititation function to cfg_space.c drm/i915/gvt: introuduce intel_vgpu_reset_gtt() to reset gtt drm/i915/gvt: introudce intel_vgpu_reset_resource() to reset vgpu resource state drm/i915: Fix phys pwrite for struct_mutex-less operation drm/i915: Clear ret before unbinding in i915_gem_evict_something() drm/i915/gvt: cleanup GFP flags drm/i915/gvt/kvmgt: return meaningful error for vgpu creating failure drm/i915/gvt: cleanup opregion memory allocation code drm/i915/gvt: destroy the allocated idr on vgpu creating failures drm/i915/gvt: init/destroy vgpu_idr properly drm/i915/gvt: dec vgpu->running_workload_num after the workload is really done drm/i915/gvt: fix use after free for workload drm/i915/gvt: remove duplicated definition ...
2017-01-22Merge branch 'amd-xgbe-fixes'David S. Miller
Tom Lendacky says: ==================== amd-xgbe: AMD XGBE driver fixes 2017-01-20 This patch series addresses some issues in the AMD XGBE driver. The following fixes are included in this driver update series: - Add a fix for a version of the hardware that uses different register offset values for a device with the same PCI device ID - Add support to check the return code from the xgbe_init() function This patch series is based on net. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-22amd-xgbe: Check xgbe_init() return codeLendacky, Thomas
The xgbe_init() routine returns a return code indicating success or failure, but the return code is not checked. Add code to xgbe_init() to issue a message when failures are seen and add code to check the xgbe_init() return code. Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-22amd-xgbe: Add a hardware quirk for register definitionsLendacky, Thomas
A newer version of the hardware is using the same PCI ids for the network device but has altered register definitions for determining the window settings for the indirect PCS access. Add support to check for this hardware and if found use the new register values. Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-22Linux 4.10-rc5Linus Torvalds
2017-01-22Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fix from Thomas Gleixner: "Restore the retrigger callbacks in the IO APIC irq chips. That addresses a long standing regression which got introduced with the rewrite of the x86 irq subsystem two years ago and went unnoticed so far" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/ioapic: Restore IO-APIC irq_chip retrigger callback
2017-01-22Merge branch 'smp-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull smp/hotplug fix from Thomas Gleixner: "Remove an unused variable which is a leftover from the notifier removal" * 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: cpu/hotplug: Remove unused but set variable in _cpu_down()
2017-01-22Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhostLinus Torvalds
Pull virtio/vhost fixes from Michael Tsirkin: "Random fixes and cleanups that accumulated over the time" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: virtio/s390: virtio: constify virtio_config_ops structures virtio/s390: add missing \n to end of dev_err message virtio/s390: support READ_STATUS command for virtio-ccw tools/virtio/ringtest: tweaks for s390 tools/virtio/ringtest: fix run-on-all.sh for offline cpus virtio_console: fix a crash in config_work_handler vhost/scsi: silence uninitialized variable warning vhost: scsi: constify target_core_fabric_ops structures
2017-01-22Merge branch 'for-rc' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux Pull thermal management fixes from Zhang Rui: - fix a regression that thermal zone dynamically allocated sysfs attributes are freed before they're removed, which is introduced in 4.10-rc1 (Jacob von Chorus) - fix a boot warning because deprecated hwmon API is used (Fabio Estevam) - a couple of fixes for rockchip thermal driver (Brian Norris, Caesar Wang) * 'for-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: thermal: rockchip: fixes the conversion table thermal: core: move tz->device.groups cleanup to thermal_release thermal: thermal_hwmon: Convert to hwmon_device_register_with_info() thermal: rockchip: handle set_trips without the trip points thermal: rockchip: optimize the conversion table thermal: rockchip: fixes invalid temperature case thermal: rockchip: don't pass table structs by value thermal: rockchip: improve conversion error messages
2017-01-22iio: dht11: Use usleep_range instead of msleep for start signalJohn Brooks
The DHT22 (AM2302) datasheet specifies that the LOW start pulse should not exceed 20ms. However, observations with an oscilloscope of an RPi Model 2B (rev 1.1) communicating with a DHT22 sensor showed that the driver was consistently sending start pulses longer than 20ms: Kernel 4.7.10-v7+ (n=132): Minimum pulse length: 20.20ms Maximum: 29.84ms Mean: 24.96ms StDev: 2.82ms Sensor response rate: 100% Read success rate: 76% On kernel 4.8, the start pulse was so long that the sensor would not even respond 97% of the time: Kernel 4.8.16-v7+ (n=100): Minimum pulse length: 30.4ms Maximum: 74.4ms Mean: 39.3ms StDev: 10.2ms Sensor response rate: 3% Read success rate: 3% The driver would return ETIMEDOUT and write log messages like this: [ 51.430987] dht11 dht11@0: Only 1 signal edges detected [ 66.311019] dht11 dht11@0: Only 0 signal edges detected Replacing msleep(18) with usleep_range(18000, 20000) made the pulse length sane again and restored responsiveness: Kernel 4.8.16-v7+ with usleep_range (n=123): Minimum pulse length: 18.16ms Maximum: 20.20ms Mean: 19.85ms StDev: 0.51ms Sensor response rate: 100% Read success rate: 84% Cc: stable@vger.kernel.org Signed-off-by: John Brooks <john@fastquake.com> Reviewed-by: Harald Geyer <harald@ccbib.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-01-22platform/x86: ideapad-laptop: handle ACPI event 1Zach Ploskey
On Ideapad laptops, ACPI event 1 is currently not handled. Many models log "ideapad_laptop: Unknown event: 1" every 20 seconds or so while running on battery power. Some convertible laptops receive this event when switching in and out of tablet mode. This adds and additional case for event 1 in ideapad_acpi_notify to call ideapad_input_report(priv, vpc_bit), so that the event is reported to userspace and we avoid unnecessary logging. Fixes bug #107481 (https://bugzilla.kernel.org/show_bug.cgi?id=107481) Fixes bug #65751 (https://bugzilla.kernel.org/show_bug.cgi?id=65751) Signed-off-by: Zach Ploskey <zach@ploskey.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2017-01-22sched/Documentation/sched-rt-group: Fix incorrect exampleZhou Chengming
I feel that the example given in the document to show the possibility of task starvation of configurable period is wrong. The example says group A and B both have 50% bandwidth, and a while (1) loop in A will run for the full period of B and can starve B's tasks. So I think the runtime of group A should be 50000us, then the period and runtime of group B should be 50000us and 25000us. Signed-off-by: Zhou Chengming <zhouchengming1@huawei.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: corbet@lwn.net Cc: iamyooon@gmail.com Cc: linux-doc@vger.kernel.org Cc: lizefan@huawei.com Link: http://lkml.kernel.org/r/1485069755-44287-1-git-send-email-zhouchengming1@huawei.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-01-22x86/timer: Make delay() work during early bootupJiri Slaby
When a panic happens during bootup, "Rebooting in X seconds.." is shown, but reboot happens immediatelly. It is because panic() uses mdelay() and mdelay() calls __const_udelay() immediately, which does not work while booting. The per_cpu cpu_info.loops_per_jiffy value is not initialized yet, so __const_udelay() actually multiplies the number of loops by zero. This results in __const_udelay() to delay the execution only by a nanosecond or so. So check whether cpu_info.loops_per_jiffy is zero and use loops_per_jiffy in that case. mdelay() will not be so precise without proper calibration, but it works relatively well. Before: [ 0.170039] delaying 100ms [ 0.170828] done After [ 0.214042] delaying 100ms [ 0.313974] done I do not think the added check matters given we are about to spin the processor in the next few hundred cycles. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20170119114730.2670-1-jslaby@suse.cz [ Minor edits. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-01-22locking/rwsem: Reinit wake_q after useWaiman Long
In __rwsem_down_write_failed_common(), the same wake_q variable name is defined twice, with the inner wake_q hiding the one in outer scope. We can either use different names for the two wake_q's. Even better, we can use the same wake_q twice, if necessary. To enable the latter change, we need to define a new helper function wake_q_init() to enable reinitalization of wake_q after use. Signed-off-by: Waiman Long <longman@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1485052415-9611-1-git-send-email-longman@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-01-21Merge tag 'usb-4.10-rc5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB fixes from Greg KH: "Here are a few small USB fixes for 4.10-rc5. Most of these are gadget/dwc2 fixes for reported issues, all of these have been in linux-next for a while. The last one is a single xhci WARN_ON removal to handle an issue that the dwc3 driver is hitting in the 4.10-rc tree. The warning is harmless and needs to be removed, and a "real" fix that is more complex will show up in 4.11-rc1 for this device. That last patch hasn't been in linux-next yet due to the weekend timing, but it's a "simple" WARN_ON() removal so what could go wrong? :)" Famous last words. * tag 'usb-4.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: xhci: remove WARN_ON if dma mask is not set for platform devices usb: dwc2: host: fix Wmaybe-uninitialized warning usb: dwc2: gadget: Fix GUSBCFG.USBTRDTIM value usb: gadget: udc: atmel: remove memory leak usb: dwc3: exynos fix axius clock error path to do cleanup usb: dwc2: Avoid suspending if we're in gadget mode usb: dwc2: use u32 for DT binding parameters usb: gadget: f_fs: Fix iterations on endpoints. usb: dwc2: gadget: Fix DMA memory freeing usb: gadget: composite: Fix function used to free memory
2017-01-21Merge branch 'libnvdimm-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull libnvdimm fixes from Dan Williams: "Two fixes: - a regression fix for the multiple-pmem-namespace-per-region support added in 4.9. Even if an existing environment is not using that feature the act of creating and a destroying a single namespace with the ndctl utility will lead to the proliferation of extra unwanted namespace devices. - a fix for the error code returned from the pmem driver when the memcpy_mcsafe() routine returns -EFAULT. Btrfs seems to be the only block I/O consumer that tries to parse the meaning of the error code when it is non-zero. Neither of these fixes are critical, the namespace leak is awkward in that it can cause device naming to change and complicates debugging namespace initialization issues. The error code fix is included out of caution for what other consumers might be expecting -EIO for block I/O errors" * 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: libnvdimm, namespace: fix pmem namespace leak, delete when size set to zero pmem: return EIO on read_pmem() failure
2017-01-21Merge tag 'clk-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux Pull clk fix from Stephen Boyd: "One fix for Samsung Exynos524x SoCs where recent IOMMU patches have caused some of these clocks to turn off when they were always left on before" * tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: clk/samsung: exynos542x: mark some clocks as critical
2017-01-21Merge tag 'arc-4.10-rc5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc Pull ARC fixes from Vineet Gupta: - more intc updates [Yuriv] - fix module build when unwinder is turned off - IO Coherency Programming model updates - other miscellaneous * tag 'arc-4.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: ARC: Revert "ARC: mm: IOC: Don't enable IOC by default" ARC: mm: split arc_cache_init to allow __init reaping of bulk ARCv2: IOC: Use actual memory size to setup aperture size ARCv2: IOC: Adhere to progamming model guidelines to avoid DMA corruption ARCv2: IOC: refactor the IOC and SLC operations into own functions ARC: module: Fix !CONFIG_ARC_DW2_UNWIND builds ARCv2: save r30 on kernel entry as gcc uses it for code-gen ARCv2: IRQ: Call entry/exit functions for chained handlers in MCIP ARC: IRQ: Use hwirq instead of virq in mask/unmask ARC: mmu: clarify the MMUv3 programming model
2017-01-21Merge tag 'powerpc-4.10-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Michael Ellerman: "Two fixes for fallout from the hugetlb changes we merged this cycle. Ten other fixes, four only affect Power9, and the rest are a bit of a mixture though nothing terrible. Thanks to: Aneesh Kumar K.V, Anton Blanchard, Benjamin Herrenschmidt, Dave Martin, Gavin Shan, Madhavan Srinivasan, Nicholas Piggin, Reza Arbab" * tag 'powerpc-4.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc: Ignore reserved field in DCSR and PVR reads and writes powerpc/ptrace: Preserve previous TM fprs/vsrs on short regset write powerpc/ptrace: Preserve previous fprs/vsrs on short regset write powerpc/perf: Use MSR to report privilege level on P9 DD1 selftest/powerpc: Wrong PMC initialized in pmc56_overflow test powerpc/eeh: Enable IO path on permanent error powerpc/perf: Fix PM_BRU_CMPL event code for power9 powerpc/mm: Fix little-endian 4K hugetlb powerpc/mm/hugetlb: Don't panic when we don't find the default huge page size powerpc: Fix pgtable pmd cache init powerpc/icp-opal: Fix missing KVM case and harden replay powerpc/mm: Fix memory hotplug BUG() on radix
2017-01-21hwmon: (lm70) Add support for TI TMP122/124Florian Fainelli
Add support for Texas Instruments TMP122/124 which are nearly identical to their TMP121/123 except that they also support programmable temperature thresholds. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-01-21hwmon: (lm70) Utilize dev_warn instead of pr_warnFlorian Fainelli
We have a device reference, utilize it instead of pr_warn(). Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-01-21hwmon: (ltc4151) Export OF device ID table as module aliasesJavier Martinez Canillas
The I2C core always reports a MODALIAS of the form i2c:<foo> even if the device was registered via OF, this means that exporting the OF device ID table device aliases in the module is not needed. But in order to change how the core reports modaliases to user-space, it's better to export it. Before this patch: $ modinfo drivers/hwmon/ltc4151.ko | grep alias alias: i2c:ltc4151 After this patch: $ modinfo drivers/hwmon/ltc4151.ko | grep alias alias: i2c:ltc4151 alias: of:N*T*Clltc,ltc4151C* alias: of:N*T*Clltc,ltc4151 Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-01-21iio: adc: palmas_gpadc: retrieve a valid iio_dev in suspend/resumeAlison Schofield
The suspend/resume functions were using dev_to_iio_dev() to get the iio_dev. That only works on IIO dev's. Use dev_get_drvdata() for a platform device to get the correct iio_dev. Signed-off-by: Alison Schofield <amsfield22@gmail.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-01-21iio: health: max30100: fixed parenthesis around FIFO count checkMatt Ranostay
FIFO was being read every sample after the "almost full" state was reached. This was due to an incorrect placement of the parenthesis in the while condition check. Note - the fixes tag is not actually correct, but the fix in this patch would also be needed for it to function correctly so we'll go with that one. Backports should pick up both. Signed-off-by: Matt Ranostay <matt@ranostay.consulting> Fixes: b74fccad7 ("iio: health: max30100: correct FIFO check condition") Cc: Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-01-21iio: health: afe4404: retrieve a valid iio_dev in suspend/resumeAlison Schofield
The suspend/resume functions were using dev_to_iio_dev() to get the iio_dev. That only works on IIO dev's. Replace it with i2c functions to get the correct iio_dev. Signed-off-by: Alison Schofield <amsfield22@gmail.com> Acked-by: Andrew F. Davis <afd@ti.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-01-21iio: health: afe4403: retrieve a valid iio_dev in suspend/resumeAlison Schofield
The suspend/resume functions were using dev_to_iio_dev() to get the iio_dev. That only works on IIO dev's. Replace it with spi functions to get the correct iio_dev. Signed-off-by: Alison Schofield <amsfield22@gmail.com> Acked-by: Andrew F. Davis <afd@ti.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-01-21iwlwifi: fix kernel crash when unregistering thermal zoneJens Axboe
A recent firmware change seems to have enabled thermal zones on the iwlwifi driver. Unfortunately, my device fails when registering the thermal zone. This doesn't stop the driver from attempting to unregister the thermal zone at unload time, triggering a NULL pointer deference in strlen() off the thermal_zone_device_unregister() path. Don't unregister if name is NULL, for that case we failed registering. Do the same for the cooling zone. Signed-off-by: Jens Axboe <axboe@fb.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-01-21power: supply: bq2415x: check for NULL acpi_id to avoid null pointer dereferenceColin Ian King
acpi_match_device can potentially return NULL, so it is prudent to check if acpi_id is null before it is dereferenced. Add a check and an error message to indicate the failure. Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Pali Rohár <pali.rohar@gmail.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2017-01-20scsi: virtio_scsi: Reject commands when virtqueue is brokenEric Farman
In the case of a graceful set of detaches, where the virtio-scsi-ccw disk is removed from the guest prior to the controller, the guest behaves quite normally. Specifically, the detach gets us into sd_sync_cache to issue a Synchronize Cache(10) command, which immediately fails (and is retried a couple of times) because the device has been removed. Later, the removal of the controller sees two CRWs presented, but there's no further indication of the removal from the guest viewpoint. [ 17.217458] sd 0:0:0:0: [sda] Synchronizing SCSI cache [ 17.219257] sd 0:0:0:0: [sda] Synchronize Cache(10) failed: Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK [ 21.449400] crw_info : CRW reports slct=0, oflw=0, chn=1, rsc=3, anc=0, erc=4, rsid=2 [ 21.449406] crw_info : CRW reports slct=0, oflw=0, chn=0, rsc=3, anc=0, erc=4, rsid=0 However, on s390, the SCSI disks can be removed "by surprise" when an entire controller (host) is removed and all associated disks are removed via the loop in scsi_forget_host. The same call to sd_sync_cache is made, but because the controller has already been removed, the Synchronize Cache(10) command is neither issued (and then failed) nor rejected. That the I/O isn't returned means the guest cannot have other devices added nor removed, and other tasks (such as shutdown or reboot) issued by the guest will not complete either. The virtio ring has already been marked as broken (via virtio_break_device in virtio_ccw_remove), but we still attempt to queue the command only to have it remain there. The calling sequence provides a bit of distinction for us: virtscsi_queuecommand() -> virtscsi_kick_cmd() -> virtscsi_add_cmd() -> virtqueue_add_sgs() -> virtqueue_add() if success return 0 elseif vq->broken or vring_mapping_error() return -EIO else return -ENOSPC A return of ENOSPC is generally a temporary condition, so returning "host busy" from virtscsi_queuecommand makes sense here, to have it redriven in a moment or two. But the EIO return code is more of a permanent error and so it would be wise to return the I/O itself and allow the calling thread to finish gracefully. The result is these four kernel messages in the guest (the fourth one does not occur prior to this patch): [ 22.921562] crw_info : CRW reports slct=0, oflw=0, chn=1, rsc=3, anc=0, erc=4, rsid=2 [ 22.921580] crw_info : CRW reports slct=0, oflw=0, chn=0, rsc=3, anc=0, erc=4, rsid=0 [ 22.921978] sd 0:0:0:0: [sda] Synchronizing SCSI cache [ 22.921993] sd 0:0:0:0: [sda] Synchronize Cache(10) failed: Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK I opted to fill in the same response data that is returned from the more graceful device detach, where the disk device is removed prior to the controller device. Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com> Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-20scsi: hisi_sas: decrease running_req in hisi_sas_slot_task_free()Xiang Chen
There is an issue that hisi_sas_dev.running_req is not decremented properly for internal abort and TMF. To resolve, only decrease running_req in hisi_sas_slot_task_free() Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-20scsi: hisi_sas: fix probe ordering problemXiang Chen
There is a potential probe issue in how we trigger the hw initialisation. Although we use 1s timer to delay hw initialisation, there is still a potential that sas_register_ha() is not be finished before we start the PHY init from hw->hw_init(). To avoid this issue, initialise the hw after sas_register_ha() in the same probe context. Note: it is not necessary to use 1s timer now (modified v2 hw only). Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-20scsi: hisi_sas: downgrade internal abort exit printJohn Garry
Downgrade the exit print in hisi_sas_internal_task_abort() to dbg level, as info is not required. Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Xiang Chen <chenxiang66@hisilicon.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-20scsi: hisi_sas: modify hard reset for directed-attached diskXiang Chen
Correctly set registers in v2 for root PHY hardreset for directly attached disk. Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-20scsi: hisi_sas: downgrade refclk messageJohn Garry
The message to inform that the controller has no refclk is currently at warning level, which is unnecessary, so downgrade to debug. Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Xiang Chen <chenxiang66@hisilicon.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-20scsi: hisi_sas: modify some values of ITCT tableXiang Chen
Set SMP connection timeout and continue AWT timer; Clear ITCT table when dev gone. Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-20scsi: hisi_sas: workaround v2 hw SATA IO timeout issueXiang Chen
The v2 SAS controller needs more time to detect channel idle and send setup link request than SATA disk does, so it is difficult for the SAS controller to setup an STP link. Therefore it may cause some IO timeouts. We need to periodically configure the SAS controller so it doesn't receive STP setup requests from SATA disks for a while, so IO can be sent during this period. Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com> Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-20scsi: lpfc: Fix lpfc_wwn_set return code checkJames Smart
When I reversed the patch to re-add the lpfc_soft_wwn parameter feature, it re-added code that had a long-standing bug. (that's what I get I guess :) As Dan Carpenter pointed out - error checks looked at wrong polarity. 0 is success, -errno is failure. Updated checks. Signed-off-by: James Smart <james.smart@broadcom.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-21platform/x86: intel_mid_powerbtn: Set IRQ_ONESHOTAndy Shevchenko
The commit 1c6c69525b40 ("genirq: Reject bogus threaded irq requests") starts refusing misconfigured interrupt handlers. This makes intel_mid_powerbtn not working anymore. Add a mandatory flag to a threaded IRQ request in the driver. Fixes: 1c6c69525b40 ("genirq: Reject bogus threaded irq requests") Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2017-01-21platform/x86: surface3-wmi: fix uninitialized symbolBenjamin Tissoires
The patch 3dda3b3798f9: "platform/x86: Add custom surface3 platform device for controlling LID" from Nov 25, 2016, leads to the following static checker warning: drivers/platform/x86/surface3-wmi.c:168 s3_wmi_check_platform_device() error: uninitialized symbol 'ts_adev'. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2017-01-21platform/x86: surface3-wmi: Shut up unused-function warningArnd Bergmann
The newly added driver guards its "resume" callback with an warning in some configurations: drivers/platform/x86/surface3-wmi.c:248:12: error: 's3_wmi_resume' defined but not used [-Werror=unused-function] Using a __maybe_unused annotation without an #ifdef avoids the mistake more reliably. Fixes: 3dda3b3798f9 ("platform/x86: Add custom surface3 platform device for controlling LID") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2017-01-21platform/x86: mlx-platform: free first dev on errorDan Carpenter
There is an off-by-one error so we don't unregister priv->pdev_mux[0]. Also it's slightly simpler as a while loop instead of a for loop. Fixes: 58cbbee2391c ("x86/platform/mellanox: Introduce support for Mellanox systems platform") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Vadim Pasternak <vadimp@mellanox.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
2017-01-20delay: Add explanation of udelay() inaccuracyRussell King
There seems to be some misunderstanding that udelay() and friends will always guarantee the specified delay. This is a false understanding. When udelay() is based on CPU cycles, it can return early for many reasons which are detailed by Linus' reply to me in a thread in 2011: http://lists.openwall.net/linux-kernel/2011/01/12/372 However, a udelay test module was created in 2014 which allows udelay() to only be 0.5% fast, which is outside of the CPU-cycles udelay() results I measured back in 2011, which were deemed to be in the "we don't care" region. test_udelay() should be fixed to reflect the real allowable tolerance on udelay(), rather than 0.5%. Cc: David Riley <davidriley@chromium.org> Cc: John Stultz <john.stultz@linaro.org> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: John Stultz <john.stultz@linaro.org>
2017-01-20Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull KVM fixes from Radim Krčmář: "ARM: - Fix for timer setup on VHE machines - Drop spurious warning when the timer races against the vcpu running again - Prevent a vgic deadlock when the initialization fails (for stable) s390: - Fix a kernel memory exposure (for stable) x86: - Fix exception injection when hypercall instruction cannot be patched" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: s390: do not expose random data via facility bitmap KVM: x86: fix fixing of hypercalls KVM: arm/arm64: vgic: Fix deadlock on error handling KVM: arm64: Access CNTHCTL_EL2 bit fields correctly on VHE systems KVM: arm/arm64: Fix occasional warning from the timer work function
2017-01-20Merge branch 'scsi-target-for-v4.10' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/bvanassche/linux Pull SCSI target fixes from Bart Van Assche: - two small fixes for the ibmvscsis driver - ten patches with bug fixes for the target mode of the qla2xxx driver - four patches that avoid that the "sparse" and "smatch" static analyzer tools report false positives for the qla2xxx code base * 'scsi-target-for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/bvanassche/linux: qla2xxx: Disable out-of-order processing by default in firmware qla2xxx: Fix erroneous invalid handle message qla2xxx: Reduce exess wait during chip reset qla2xxx: Terminate exchange if corrupted qla2xxx: Fix crash due to null pointer access qla2xxx: Collect additional information to debug fw dump qla2xxx: Reset reserved field in firmware options to 0 qla2xxx: Set tcm_qla2xxx version to automatically track qla2xxx version qla2xxx: Include ATIO queue in firmware dump when in target mode qla2xxx: Fix wrong IOCB type assumption qla2xxx: Avoid that building with W=1 triggers complaints about set-but-not-used variables qla2xxx: Move two arrays from header files to .c files qla2xxx: Declare an array with file scope static qla2xxx: Fix indentation ibmvscsis: Fix sleeping in interrupt context ibmvscsis: Fix max transfer length
2017-01-20scsi: sd: Cleaned up comment references to @sdp argument explanation.John Pittman
In sd.c there are two comment references to 'struct scsi_device *sdp' as an argument. One of the references has a typo and the other should be a reference to 'struct device *dev' instead. Fixed by correcting the typo in the first and changing the explanation in the second. Signed-off-by: John Pittman <jpittman@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-20scsi: be2iscsi: Use GFP_ATOMIC under spin lockWei Yongjun
A spin lock is taken here so we should use GFP_ATOMIC. Fixes: 987132167f4b ("scsi: be2iscsi: Fix for crash in beiscsi_eh_device_reset") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-20scsi: lpfc: Replace BUG() with BUG_ON()Shyam Saini
Replace BUG() with BUG_ON() using coccinelle. Signed-off-by: Shyam Saini <mayhs11saini@gmail.com> Acked-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>