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2020-05-12i2c: pxa: consolidate i2c_pxa_*xfer() implementationsRussell King1-20/+16
Most of i2c_pxa_pio_xfer() and i2c_pxa_xfer() are identical; the only differences are that i2c_pxa_pio_xfer() may reset the bus, and they use different underlying transfer functions. The retry loop is the same. Consolidate these two functions. Signed-off-by: Russell King <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2020-05-11i2c: mux: pca954x: Convert license to SPDX identifierAndy Shevchenko1-5/+2
Use a shorter SPDX identifier instead of pasting the whole license. While here, replace duplicating PCA954x with PCA984x. Signed-off-by: Andy Shevchenko <[email protected]> Reviewed-by: Peter Rosin <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2020-05-11i2c: mux: pca954x: Move device_remove_file() out of pca954x_cleanup()Andy Shevchenko1-3/+2
device_create_file() is called the last in ->probe() but pca954x_cleanup(), which is called earlier in error path, tries to remove never created file. Move device_remove_file() call outside of pca954x_cleanup() to make it slightly closer to what pca954x_init() is doing. Signed-off-by: Andy Shevchenko <[email protected]> Reviewed-by: Peter Rosin <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2020-05-11i2c: mux: pca954x: Make use of device propertiesAndy Shevchenko1-10/+5
Device property API allows to gather device resources from different sources, such as ACPI. Convert the drivers to unleash the power of device property API. Signed-off-by: Andy Shevchenko <[email protected]> Reviewed-by: Peter Rosin <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2020-05-11i2c: mux: pca954x: Refactor pca954x_irq_handler()Andy Shevchenko1-10/+7
Refactor pca954x_irq_handler() to: - use for_each_set_bit() macro - use IRQ_RETVAL() macro Above change makes code easy to read and understand. Signed-off-by: Andy Shevchenko <[email protected]> Reviewed-by: Peter Rosin <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2020-05-08i2c: tegra: Synchronize DMA before terminationDmitry Osipenko1-0/+9
DMA transfer could be completed, but CPU (which handles DMA interrupt) may get too busy and can't handle the interrupt in a timely manner, despite of DMA IRQ being raised. In this case the DMA state needs to synchronized before terminating DMA transfer in order not to miss the DMA transfer completion. Signed-off-by: Dmitry Osipenko <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2020-05-08i2c: tegra: Better handle case where CPU0 is busy for a long timeDmitry Osipenko1-12/+15
Boot CPU0 always handle I2C interrupt and under some rare circumstances (like running KASAN + NFS root) it may stuck in uninterruptible state for a significant time. In this case we will get timeout if I2C transfer is running on a sibling CPU, despite of IRQ being raised. In order to handle this rare condition, the IRQ status needs to be checked after completion timeout. Signed-off-by: Dmitry Osipenko <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2020-05-08i2c: tegra: Keep IRQs enabled during suspend/resumeThierry Reding1-2/+2
One of the I2C controllers on Tegra SoCs is typically connected to a system PMIC, which provides controls for critical power supplies for most platforms. Some drivers, such as PCI, need to disable these regulators during a very late stage during suspend and resume them at a very early stage during resume. To support these use-cases, keep interrupts disabled during suspend/ resume. Suggested-by: Dmitry Osipenko <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
2020-05-08i2c: tegra: Restore pinmux on system resumeThierry Reding1-4/+19
Depending on the board design, the I2C controllers found on Tegra SoCs may require pinmuxing in order to function. This is done as part of the driver's runtime suspend/resume operations. However, the PM core does not allow devices to go into runtime suspend during system sleep to avoid potential races with the suspend/resume of their parents. As a result of this, when Tegra SoCs resume from system suspend, their I2C controllers may have lost the pinmux state in hardware, whereas the pinctrl subsystem is not aware of this. To fix this, make sure that if the I2C controller is not runtime suspended, the runtime suspend code is still executed in order to disable the module clock (which we don't need to be enabled during sleep) and set the pinmux to the idle state. Conversely, make sure that the I2C controller is properly resumed when waking up from sleep so that pinmux settings are properly restored. This fixes a bug seen with DDC transactions to an HDMI monitor timing out when resuming from system suspend. Signed-off-by: Thierry Reding <[email protected]>
2020-05-07Revert "i2c: tegra: Fix suspending in active runtime PM state"Thierry Reding1-9/+0
This reverts commit 9f42de8d4ec2304f10bbc51dc0484f3503d61196. It's not safe to use pm_runtime_force_{suspend,resume}(), especially during the noirq phase of suspend. See also the guidance provided in commit 1e2ef05bb8cf ("PM: Limit race conditions between runtime PM and system sleep (v2)"). Signed-off-by: Thierry Reding <[email protected]>
2020-05-05i2c: at91: Send bus clear command if SDA is downCodrin Ciubotariu3-8/+50
After a transfer timeout, some faulty I2C slave devices might hold down the SDA pin. We can generate a bus clear command, hoping that the slave might release the pins. If the CLEAR command is not supported, we will use gpio recovery, if available, to reset the bus. Signed-off-by: Codrin Ciubotariu <[email protected]> Acked-by: Ludovic Desroches <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2020-05-05i2c: use my kernel.org address from now onWolfram Sang5-4/+6
The old email is still active, but for easier handling, I am going to use my kernel.org address from now on. Also, add a mailmap for the now defunct Pengutronix address. Signed-off-by: Wolfram Sang <[email protected]>
2020-05-05i2c: fix missing pm_runtime_put_sync in i2c_device_probeAlain Volmat1-6/+16
In case of the I2C client exposes the flag I2C_CLIENT_HOST_NOTIFY, pm_runtime_get_sync is called in order to always keep active the adapter. However later on, pm_runtime_put_sync is never called within the function in case of an error. This commit add this error handling. Fixes: 72bfcee11cf8 ("i2c: Prevent runtime suspend of adapter when Host Notify is required") Signed-off-by: Alain Volmat <[email protected]> Reviewed-by: Jarkko Nikula <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2020-05-05i2c: pxa: fix i2c_pxa_wait_bus_not_busy() boundary conditionRussell King1-5/+12
Fix i2c_pxa_wait_bus_not_busy()'s boundary conditions, so that a coincidental success and timeout results in the function returning success. Signed-off-by: Russell King <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2020-05-05i2c: pxa: clean up decode_bits()Russell King1-4/+3
Clean up decode_bits() to use pr_cont(), and move the newline into the function rather than at its two callsites. Avoid printing an unnecessary space before the newline. Signed-off-by: Russell King <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2020-05-05i2c: pxa: fix i2c_pxa_scream_blue_murder() debug outputRussell King1-4/+3
The IRQ log output is supposed to appear on a single line. However, commit 3a2dc1677b60 ("i2c: pxa: Update debug function to dump more info on error") resulted in it being printed one-entry-per-line, which is excessively long. Fixing this is not a trivial matter; using pr_cont() doesn't work as the previous dev_dbg() may not have been compiled in, or may be dynamic. Since the rest of this function output is at error level, and is also debug output, promote this to error level as well to avoid this problem. Reduce the number of always zero prefix digits to save screen real- estate. Signed-off-by: Russell King <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2020-05-05i2c: pxa: move DT IDs along side platform IDsRussell King1-9/+9
Move the ID tables into one place, near the device dependent data. Signed-off-by: Russell King <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2020-05-05i2c: pxa: move private definitions to i2c-pxa.cRussell King2-48/+43
Move driver-private definitions out of the i2c-pxa.h platform data header file into the driver itself. Nothing outside of the driver makes use of these constants. Signed-off-by: Russell King <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2020-05-05i2c: pxa: always set fm and hs members for each typeRussell King1-2/+10
Always set the fm and hs members of struct pxa_reg_layout. These members are already taking space, we don't need code as well. Signed-off-by: Russell King <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2020-05-05i2c: pxa: add and use definitions for IBMR registerRussell King1-4/+8
Add definitions for the bits in the IBMR register, and use them in the code. This improves readability. Signed-off-by: Russell King <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2020-05-05i2c: pxa: re-arrange register field definitionsRussell King1-60/+53
Arrange the register field definitions to be grouped together, rather than the Armada-3700 definitions being separated from the rest of the definitions. Signed-off-by: Russell King <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2020-05-05i2c: pxa: re-arrange functions to flow betterRussell King1-163/+162
Re-arrange the PXA I2C code to avoid forward declarations, and keep similar functionality (e.g. the non-IRQ mode support) together. This improves code readability. Signed-off-by: Russell King <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2020-05-05i2c: pxa: re-arrange includes to be in alphabetical orderRussell King1-8/+8
Arrange the includes to be in alphabetical order to help avoid duplicated includes. Signed-off-by: Russell King <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2020-05-05i2c: pxa: remove unneeded includesRussell King1-4/+0
i2c-pxa does not need linux/sched.h nor linux/time.h includes, so remove these. Signed-off-by: Russell King <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2020-05-05i2c: pxa: use official address byte helperRussell King1-14/+4
i2c-pxa was created before i2c_8bit_addr_from_msg() was implemented, and used its own i2c_pxa_addr_byte() which is functionally the same. Sadly, it was never updated to use this new helper. Switch it over. Signed-off-by: Russell King <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2020-05-03Linux 5.7-rc4Linus Torvalds1-1/+1
2020-05-03Merge tag 'for-5.7-rc3-tag' of ↵Linus Torvalds4-7/+53
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux Pull more btrfs fixes from David Sterba: "A few more stability fixes, minor build warning fixes and git url fixup: - fix partial loss of prealloc extent past i_size after fsync - fix potential deadlock due to wrong transaction handle passing via journal_info - fix gcc 4.8 struct intialization warning - update git URL in MAINTAINERS entry" * tag 'for-5.7-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: MAINTAINERS: btrfs: fix git repo URL btrfs: fix gcc-4.8 build warning for struct initializer btrfs: transaction: Avoid deadlock due to bad initialization timing of fs_info::journal_info btrfs: fix partial loss of prealloc extent past i_size after fsync
2020-05-03Merge tag 'iommu-fixes-v5.7-rc3' of ↵Linus Torvalds5-7/+11
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull IOMMU fixes from Joerg Roedel: - Fix a memory leak when dev_iommu gets freed and a sub-pointer does not - Build dependency fixes for Mediatek, spapr_tce, and Intel IOMMU driver - Export iommu_group_get_for_dev() only for GPLed modules - Fix AMD IOMMU interrupt remapping when x2apic is enabled - Fix error path in the QCOM IOMMU driver probe function * tag 'iommu-fixes-v5.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: iommu/qcom: Fix local_base status check iommu: Properly export iommu_group_get_for_dev() iommu/vt-d: Use right Kconfig option name iommu/amd: Fix legacy interrupt remapping for x2APIC-enabled system iommu: spapr_tce: Disable compile testing to fix build on book3s_32 config iommu/mediatek: Fix MTK_IOMMU dependencies iommu: Fix the memory leak in dev_iommu_free()
2020-05-03MAINTAINERS: btrfs: fix git repo URLEric Biggers1-1/+1
The git repo listed for btrfs hasn't been updated in over a year. List the current one instead. Signed-off-by: Eric Biggers <[email protected]> Reviewed-by: David Sterba <[email protected]> Signed-off-by: David Sterba <[email protected]>
2020-05-02Merge tag 'pm-5.7-rc4' of ↵Linus Torvalds3-3/+10
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management fixes from Rafael Wysocki: - prevent the intel_pstate driver from printing excessive diagnostic messages in some cases (Chris Wilson) - make the hibernation restore kernel freeze kernel threads as well as user space tasks (Dexuan Cui) - fix the ACPI device PM disagnostic messages to include the correct power state name (Kai-Heng Feng). * tag 'pm-5.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: PM: ACPI: Output correct message on target power state PM: hibernate: Freeze kernel threads in software_resume() cpufreq: intel_pstate: Only mention the BIOS disabling turbo mode once
2020-05-02Merge branches 'pm-cpufreq' and 'pm-sleep'Rafael J. Wysocki2-1/+8
* pm-cpufreq: cpufreq: intel_pstate: Only mention the BIOS disabling turbo mode once * pm-sleep: PM: hibernate: Freeze kernel threads in software_resume()
2020-05-02Merge tag 'iomap-5.7-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linuxLinus Torvalds2-4/+9
Pull iomap fix from Darrick Wong: "Hoist the check for an unrepresentable FIBMAP return value into ioctl_fibmap. The internal kernel function can handle 64-bit values (and is needed to fix a regression on ext4 + jbd2). It is only the userspace ioctl that is so old that it cannot deal" * tag 'iomap-5.7-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: fibmap: Warn and return an error in case of block > INT_MAX
2020-05-02Merge tag 'nfs-for-5.7-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds10-36/+79
Pull NFS client bugfixes from Trond Myklebust: "Highlights include: Stable fixes: - fix handling of backchannel binding in BIND_CONN_TO_SESSION Bugfixes: - Fix a credential use-after-free issue in pnfs_roc() - Fix potential posix_acl refcnt leak in nfs3_set_acl - defer slow parts of rpc_free_client() to a workqueue - Fix an Oopsable race in __nfs_list_for_each_server() - Fix trace point use-after-free race - Regression: the RDMA client no longer responds to server disconnect requests - Fix return values of xdr_stream_encode_item_{present, absent} - _pnfs_return_layout() must always wait for layoutreturn completion Cleanups: - Remove unreachable error conditions" * tag 'nfs-for-5.7-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: NFS: Fix a race in __nfs_list_for_each_server() NFSv4.1: fix handling of backchannel binding in BIND_CONN_TO_SESSION SUNRPC: defer slow parts of rpc_free_client() to a workqueue. NFSv4: Remove unreachable error condition due to rpc_run_task() SUNRPC: Remove unreachable error condition xprtrdma: Fix use of xdr_stream_encode_item_{present, absent} xprtrdma: Fix trace point use-after-free race xprtrdma: Restore wake-up-all to rpcrdma_cm_event_handler() nfs: Fix potential posix_acl refcnt leak in nfs3_set_acl NFS/pnfs: Fix a credential use-after-free issue in pnfs_roc() NFS/pnfs: Ensure that _pnfs_return_layout() waits for layoutreturn completion
2020-05-02Merge tag 'dmaengine-fix-5.7-rc4' of ↵Linus Torvalds10-60/+65
git://git.infradead.org/users/vkoul/slave-dma Pull dmaengine fixes from Vinod Koul: "Core: - Documentation typo fixes - fix the channel indexes - dmatest: fixes for process hang and iterations Drivers: - hisilicon: build error fix without PCI_MSI - ti-k3: deadlock fix - uniphier-xdmac: fix for reg region - pch: fix data race - tegra: fix clock state" * tag 'dmaengine-fix-5.7-rc4' of git://git.infradead.org/users/vkoul/slave-dma: dmaengine: dmatest: Fix process hang when reading 'wait' parameter dmaengine: dmatest: Fix iteration non-stop logic dmaengine: tegra-apb: Ensure that clock is enabled during of DMA synchronization dmaengine: fix channel index enumeration dmaengine: mmp_tdma: Reset channel error on release dmaengine: mmp_tdma: Do not ignore slave config validation errors dmaengine: pch_dma.c: Avoid data race between probe and irq handler dt-bindings: dma: uniphier-xdmac: switch to single reg region include/linux/dmaengine: Typos fixes in API documentation dmaengine: xilinx_dma: Add missing check for empty list dmaengine: ti: k3-psil: fix deadlock on error path dmaengine: hisilicon: Fix build error without PCI_MSI
2020-05-01Merge tag 'vfio-v5.7-rc4' of git://github.com/awilliam/linux-vfioLinus Torvalds1-5/+5
Pull VFIO fixes from Alex Williamson: - copy_*_user validity check for new vfio_dma_rw interface (Yan Zhao) - Fix a potential math overflow (Yan Zhao) - Use follow_pfn() for calculating PFNMAPs (Sean Christopherson) * tag 'vfio-v5.7-rc4' of git://github.com/awilliam/linux-vfio: vfio/type1: Fix VA->PA translation for PFNMAP VMAs in vaddr_get_pfn() vfio: avoid possible overflow in vfio_iommu_type1_pin_pages vfio: checking of validity of user vaddr in vfio_dma_rw
2020-05-01Merge tag 'arm64-fixes' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fix from Catalin Marinas: "Add -fasynchronous-unwind-tables to the vDSO CFLAGS" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: vdso: Add -fasynchronous-unwind-tables to cflags
2020-05-01Merge tag 'io_uring-5.7-2020-05-01' of git://git.kernel.dk/linux-blockLinus Torvalds1-27/+31
Pull io_uring fixes from Jens Axboe: - Fix for statx not grabbing the file table, making AT_EMPTY_PATH fail - Cover a few cases where async poll can handle retry, eliminating the need for an async thread - fallback request busy/free fix (Bijan) - syzbot reported SQPOLL thread exit fix for non-preempt (Xiaoguang) - Fix extra put of req for sync_file_range (Pavel) - Always punt splice async. We'll improve this for 5.8, but wanted to eliminate the inode mutex lock from the non-blocking path for 5.7 (Pavel) * tag 'io_uring-5.7-2020-05-01' of git://git.kernel.dk/linux-block: io_uring: punt splice async because of inode mutex io_uring: check non-sync defer_list carefully io_uring: fix extra put in sync_file_range() io_uring: use cond_resched() in io_ring_ctx_wait_and_kill() io_uring: use proper references for fallback_req locking io_uring: only force async punt if poll based retry can't handle it io_uring: enable poll retry for any file with ->read_iter / ->write_iter io_uring: statx must grab the file table for valid fd
2020-05-01Merge tag 'block-5.7-2020-05-01' of git://git.kernel.dk/linux-blockLinus Torvalds2-1/+3
Pull block fixes from Jens Axboe: "A few fixes for this release: - NVMe pull request from Christoph, with a single fix for a double free in the namespace error handling. - Kill the bd_openers check in blk_drop_partitions(), fixing a regression in this merge window (Christoph)" * tag 'block-5.7-2020-05-01' of git://git.kernel.dk/linux-block: block: remove the bd_openers checks in blk_drop_partitions nvme: prevent double free in nvme_alloc_ns() error handling
2020-05-01Merge branch 'i2c/for-current-fixed' of ↵Linus Torvalds4-26/+20
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c fixes from Wolfram Sang: "Three driver bugfixes, and two reverts because the original patches revealed underlying problems which the Tegra guys are now working on" * 'i2c/for-current-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: aspeed: Avoid i2c interrupt status clear race condition. i2c: amd-mp2-pci: Fix Oops in amd_mp2_pci_init() error handling Revert "i2c: tegra: Better handle case where CPU0 is busy for a long time" Revert "i2c: tegra: Synchronize DMA before termination" i2c: iproc: generate stop event for slave writes
2020-05-01Merge tag 'sound-5.7-rc4' of ↵Linus Torvalds8-33/+35
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "Just a collection of small fixes around this time: - One more try for fixing PCM OSS regression - HD-audio: a new quirk for Lenovo, the improved driver blacklisting, a lock fix in the minor error path, and a fix for the possible race at monitor notifiaction - USB-audio: a quirk ID fix, a fix for POD HD500 workaround" * tag 'sound-5.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: usb-audio: Correct a typo of NuPrime DAC-10 USB ID ALSA: opti9xx: shut up gcc-10 range warning ALSA: hda/hdmi: fix without unlocked before return ALSA: hda/hdmi: fix race in monitor detection during probe ALSA: hda/realtek - Two front mics on a Lenovo ThinkCenter ALSA: line6: Fix POD HD500 audio playback ALSA: pcm: oss: Place the plugin buffer overflow checks correctly (for 5.7) ALSA: pcm: oss: Place the plugin buffer overflow checks correctly ALSA: hda: Match both PCI ID and SSID for driver blacklist
2020-05-01Merge tag 'drm-fixes-2020-05-01' of git://anongit.freedesktop.org/drm/drmLinus Torvalds40-154/+290
Pull drm fixes from Dave Airlie: "Regular scheduled fixes for graphics. Nothing to extreme bunch of amdgpu fixes, i915 and qxl fixes, along with some misc ones. All seems to be progressing normally. core: - EDID off by one DTD fix - DP mst write return code fix dma-buf: - fix SET_NAME ioctl uapi - doc fixes amdgpu: - Fix a green screen on resume issue - PM fixes for SR-IOV SDMA fix for navi - Renoir display fixes - Cursor and pageflip stuttering fixes - Misc additional display fixes - (uapi) Add additional DCC tiling flags for navi1x i915: - Fix selftest refcnt leak (Xiyu) - Fix gem vma lock (Chris) - Fix gt's i915_request.timeline acquire by checking if cacheline is valid (Chris) - Fix IRQ postinistall fault masks (Matt) qxl: - use after gree fix - fix lost kunmap - release leak fix virtio: - context destruction fix" * tag 'drm-fixes-2020-05-01' of git://anongit.freedesktop.org/drm/drm: (26 commits) dma-buf: fix documentation build warnings drm/qxl: qxl_release use after free drm/qxl: lost qxl_bo_kunmap_atomic_page in qxl_image_init_helper() drm/i915: Use proper fault mask in interrupt postinstall too drm/amd/display: Use cursor locking to prevent flip delays drm/amd/display: Update downspread percent to match spreadsheet for DCN2.1 drm/amd/display: Defer cursor update around VUPDATE for all ASIC drm/amd/display: fix rn soc bb update drm/amd/display: check if REFCLK_CNTL register is present drm/amdgpu: bump version for invalidate L2 before SDMA IBs drm/amdgpu: invalidate L2 before SDMA IBs (v2) drm/amdgpu: add tiling flags from Mesa drm/amd/powerplay: avoid using pm_en before it is initialized revised Revert "drm/amd/powerplay: avoid using pm_en before it is initialized" drm/qxl: qxl_release leak in qxl_hw_surface_alloc() drm/qxl: qxl_release leak in qxl_draw_dirty_fb() drm/virtio: only destroy created contexts drm/dp_mst: Fix drm_dp_send_dpcd_write() return code drm/i915/gt: Check cacheline is valid before acquiring drm/i915/gem: Hold obj->vma.lock over for_each_ggtt_vma() ...
2020-05-01Merge tag 'scsi-fixes' of ↵Linus Torvalds3-19/+19
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fixes from James Bottomley: "Four minor fixes: three in drivers and one in the core. The core one allows an additional state change that fixes a regression introduced by an update to the aacraid driver in the previous merge window" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: target/iblock: fix WRITE SAME zeroing scsi: qla2xxx: check UNLOADING before posting async work scsi: qla2xxx: set UNLOADING before waiting for session deletion scsi: core: Allow the state change from SDEV_QUIESCE to SDEV_BLOCK
2020-05-01io_uring: punt splice async because of inode mutexPavel Begunkov1-14/+2
Nonblocking do_splice() still may wait for some time on an inode mutex. Let's play safe and always punt it async. Reported-by: Jens Axboe <[email protected]> Signed-off-by: Pavel Begunkov <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2020-05-01io_uring: check non-sync defer_list carefullyPavel Begunkov1-1/+1
io_req_defer() do double-checked locking. Use proper helpers for that, i.e. list_empty_careful(). Signed-off-by: Pavel Begunkov <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2020-05-01io_uring: fix extra put in sync_file_range()Pavel Begunkov1-1/+1
[ 40.179474] refcount_t: underflow; use-after-free. [ 40.179499] WARNING: CPU: 6 PID: 1848 at lib/refcount.c:28 refcount_warn_saturate+0xae/0xf0 ... [ 40.179612] RIP: 0010:refcount_warn_saturate+0xae/0xf0 [ 40.179617] Code: 28 44 0a 01 01 e8 d7 01 c2 ff 0f 0b 5d c3 80 3d 15 44 0a 01 00 75 91 48 c7 c7 b8 f5 75 be c6 05 05 44 0a 01 01 e8 b7 01 c2 ff <0f> 0b 5d c3 80 3d f3 43 0a 01 00 0f 85 6d ff ff ff 48 c7 c7 10 f6 [ 40.179619] RSP: 0018:ffffb252423ebe18 EFLAGS: 00010286 [ 40.179623] RAX: 0000000000000000 RBX: ffff98d65e929400 RCX: 0000000000000000 [ 40.179625] RDX: 0000000000000001 RSI: 0000000000000086 RDI: 00000000ffffffff [ 40.179627] RBP: ffffb252423ebe18 R08: 0000000000000001 R09: 000000000000055d [ 40.179629] R10: 0000000000000c8c R11: 0000000000000001 R12: 0000000000000000 [ 40.179631] R13: ffff98d68c434400 R14: ffff98d6a9cbaa20 R15: ffff98d6a609ccb8 [ 40.179634] FS: 0000000000000000(0000) GS:ffff98d6af580000(0000) knlGS:0000000000000000 [ 40.179636] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.179638] CR2: 00000000033e3194 CR3: 000000006480a003 CR4: 00000000003606e0 [ 40.179641] Call Trace: [ 40.179652] io_put_req+0x36/0x40 [ 40.179657] io_free_work+0x15/0x20 [ 40.179661] io_worker_handle_work+0x2f5/0x480 [ 40.179667] io_wqe_worker+0x2a9/0x360 [ 40.179674] ? _raw_spin_unlock_irqrestore+0x24/0x40 [ 40.179681] kthread+0x12c/0x170 [ 40.179685] ? io_worker_handle_work+0x480/0x480 [ 40.179690] ? kthread_park+0x90/0x90 [ 40.179695] ret_from_fork+0x35/0x40 [ 40.179702] ---[ end trace 85027405f00110aa ]--- Opcode handler must never put submission ref, but that's what io_sync_file_range_finish() do. use io_steal_work() there. Signed-off-by: Pavel Begunkov <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2020-05-01iommu/qcom: Fix local_base status checkTang Bin1-1/+4
The function qcom_iommu_device_probe() does not perform sufficient error checking after executing devm_ioremap_resource(), which can result in crashes if a critical error path is encountered. Fixes: 0ae349a0f33f ("iommu/qcom: Add qcom_iommu") Signed-off-by: Tang Bin <[email protected]> Reviewed-by: Bjorn Andersson <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Joerg Roedel <[email protected]>
2020-05-01iommu: Properly export iommu_group_get_for_dev()Greg Kroah-Hartman1-1/+1
In commit a7ba5c3d008d ("drivers/iommu: Export core IOMMU API symbols to permit modular drivers") a bunch of iommu symbols were exported, all with _GPL markings except iommu_group_get_for_dev(). That export should also be _GPL like the others. Fixes: a7ba5c3d008d ("drivers/iommu: Export core IOMMU API symbols to permit modular drivers") Signed-off-by: Greg Kroah-Hartman <[email protected]> Acked-by: Will Deacon <[email protected]> Cc: Joerg Roedel <[email protected]> Cc: John Garry <[email protected]> Cc: Will Deacon <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Joerg Roedel <[email protected]>
2020-05-01iommu/vt-d: Use right Kconfig option nameLu Baolu1-2/+2
The CONFIG_ prefix should be added in the code. Fixes: 046182525db61 ("iommu/vt-d: Add Kconfig option to enable/disable scalable mode") Reported-and-tested-by: Kumar, Sanjay K <[email protected]> Signed-off-by: Lu Baolu <[email protected]> Cc: Ashok Raj <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Joerg Roedel <[email protected]>
2020-05-01iommu/amd: Fix legacy interrupt remapping for x2APIC-enabled systemSuravee Suthikulpanit1-1/+1
Currently, system fails to boot because the legacy interrupt remapping mode does not enable 128-bit IRTE (GA), which is required for x2APIC support. Fix by using AMD_IOMMU_GUEST_IR_LEGACY_GA mode when booting with kernel option amd_iommu_intr=legacy instead. The initialization logic will check GASup and automatically fallback to using AMD_IOMMU_GUEST_IR_LEGACY if GA mode is not supported. Fixes: 3928aa3f5775 ("iommu/amd: Detect and enable guest vAPIC support") Signed-off-by: Suravee Suthikulpanit <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Joerg Roedel <[email protected]>
2020-04-30io_uring: use cond_resched() in io_ring_ctx_wait_and_kill()Xiaoguang Wang1-1/+1
While working on to make io_uring sqpoll mode support syscalls that need struct files_struct, I got cpu soft lockup in io_ring_ctx_wait_and_kill(), while (ctx->sqo_thread && !wq_has_sleeper(&ctx->sqo_wait)) cpu_relax(); above loop never has an chance to exit, it's because preempt isn't enabled in the kernel, and the context calling io_ring_ctx_wait_and_kill() and io_sq_thread() run in the same cpu, if io_sq_thread calls a cond_resched() yield cpu and another context enters above loop, then io_sq_thread() will always in runqueue and never exit. Use cond_resched() can fix this issue. Reported-by: [email protected] Signed-off-by: Xiaoguang Wang <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
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