summaryrefslogtreecommitdiff
path: root/Documentation
AgeCommit message (Collapse)Author
2020-06-10Merge branch 'rwonce/rework' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/will/linux Pull READ/WRITE_ONCE rework from Will Deacon: "This the READ_ONCE rework I've been working on for a while, which bumps the minimum GCC version and improves code-gen on arm64 when stack protector is enabled" [ Side note: I'm _really_ tempted to raise the minimum gcc version to 4.9, so that we can just say that we require _Generic() support. That would allow us to more cleanly handle a lot of the cases where we depend on very complex macros with 'sizeof' or __builtin_choose_expr() with __builtin_types_compatible_p() etc. This branch has a workaround for sparse not handling _Generic(), either, but that was already fixed in the sparse development branch, so it's really just gcc-4.9 that we'd require. - Linus ] * 'rwonce/rework' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux: compiler_types.h: Use unoptimized __unqual_scalar_typeof for sparse compiler_types.h: Optimize __unqual_scalar_typeof compilation time compiler.h: Enforce that READ_ONCE_NOCHECK() access size is sizeof(long) compiler-types.h: Include naked type in __pick_integer_type() match READ_ONCE: Fix comment describing 2x32-bit atomicity gcov: Remove old GCC 3.4 support arm64: barrier: Use '__unqual_scalar_typeof' for acquire/release macros locking/barriers: Use '__unqual_scalar_typeof' for load-acquire macros READ_ONCE: Drop pointer qualifiers when reading from scalar types READ_ONCE: Enforce atomicity for {READ,WRITE}_ONCE() memory accesses READ_ONCE: Simplify implementations of {READ,WRITE}_ONCE() arm64: csum: Disable KASAN for do_csum() fault_inject: Don't rely on "return value" from WRITE_ONCE() net: tls: Avoid assigning 'const' pointer to non-const pointer netfilter: Avoid assigning 'const' pointer to non-const pointer compiler/gcc: Raise minimum GCC version for kernel builds to 4.8
2020-06-10Merge tag 'docs-5.8-2' of git://git.lwn.net/linuxLinus Torvalds
Pull more documentation updates from Jonathan Corbet: "A handful of late-arriving docs fixes, along with a patch changing a lot of HTTP links to HTTPS that had to be yanked and redone before the first pull" * tag 'docs-5.8-2' of git://git.lwn.net/linux: docs/memory-barriers.txt/kokr: smp_mb__{before,after}_atomic(): update Documentation Documentation: devres: add missing entry for devm_platform_get_and_ioremap_resource() Replace HTTP links with HTTPS ones: documentation docs: it_IT: address invalid reference warnings doc: zh_CN: use doc reference to resolve undefined label warning docs: Update the location of the LF NDA program docs: dev-tools: coccinelle: underlines
2020-06-10Merge tag 'pm-5.8-rc1-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull more power management updates from Rafael Wysocki: "These are operating performance points (OPP) framework updates mostly, including support for interconnect bandwidth in the OPP core, plus a few cpufreq changes, including boost support in the CPPC cpufreq driver, an ACPI device power management fix and a hibernation code cleanup. Specifics: - Add support for interconnect bandwidth to the OPP core (Georgi Djakov, Saravana Kannan, Sibi Sankar, Viresh Kumar). - Add support for regulator enable/disable to the OPP core (Kamil Konieczny). - Add boost support to the CPPC cpufreq driver (Xiongfeng Wang). - Make the tegra186 cpufreq driver set the CPUFREQ_NEED_INITIAL_FREQ_CHECK flag (Mian Yousaf Kaukab). - Prevent the ACPI power management from using power resources with devices where the list of power resources for power state D0 (full power) is missing (Rafael Wysocki). - Annotate a hibernation-related function with __init (Christophe JAILLET)" * tag 'pm-5.8-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI: PM: Avoid using power resources if there are none for D0 cpufreq: CPPC: add SW BOOST support cpufreq: change '.set_boost' to act on one policy PM: hibernate: Add __init annotation to swsusp_header_init() opp: Don't parse icc paths unnecessarily opp: Remove bandwidth votes when target_freq is zero opp: core: add regulators enable and disable opp: Reorder the code for !target_freq case opp: Expose bandwidth information via debugfs cpufreq: dt: Add support for interconnect bandwidth scaling opp: Update the bandwidth on OPP frequency changes opp: Add sanity checks in _read_opp_key() opp: Add support for parsing interconnect bandwidth cpufreq: tegra186: add CPUFREQ_NEED_INITIAL_FREQ_CHECK flag OPP: Add helpers for reading the binding properties dt-bindings: opp: Introduce opp-peak-kBps and opp-avg-kBps bindings
2020-06-10Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull input updates from Dmitry Torokhov: - a new driver for the Azoteq IQS269A capacitive touch controller - a new driver for the Cypress CY8CTMA140 touchscreen - updates to Elan and ft5x06 touchscreen drivers - assorted driver fixes - msm-vibrator has been removed as we have a more generic solution * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (28 commits) Input: adi - work around module name confict Input: iqs269a - add missing I2C dependency Input: elants - refactor elants_i2c_execute_command() Input: elants - override touchscreen info with DT properties Input: elants - remove unused axes Input: add support for Azoteq IQS269A dt-bindings: input: Add bindings for Azoteq IQS269A Input: imx_sc_key - use devm_add_action_or_reset() to handle all cleanups Input: remove msm-vibrator driver dt-bindings: Input: remove msm-vibrator Input: elants_i2c - provide an attribute to show calibration count Input: introduce input_mt_report_slot_inactive() dt-bindings: input: touchscreen: elants_i2c: convert to YAML Input: add driver for the Cypress CY8CTMA140 touchscreen dt-bindings: touchscreen: Add CY8CTMA140 bindings Input: edt-ft5x06 - prefer asynchronous probe Input: edt-ft5x06 - improve power management operations Input: edt-ft5x06 - move parameter restore into helper Input: edt-ft5x06 - fix get_default register write access Input: atkbd - receive and use physcode->keycode mapping from FW ...
2020-06-10Merge tag 'mtd/for-5.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux Pull MTD updates from Richard Weinberger: "MTD core changes: - partition parser: Support MTD names containing one or more colons. - mtdblock: clear cache_state to avoid writing to bad blocks repeatedly. Raw NAND core changes: - Stop using nand_release(), patched all drivers. - Give more information about the ECC weakness when not matching the chip's requirement. - MAINTAINERS updates. - Support emulated SLC mode on MLC NANDs. - Support "constrained" controllers, adapt the core and ONFI/JEDEC table parsing and Micron's code. - Take check_only into account. - Add an invalid ECC mode to discriminate with valid ones. - Return an enum from of_get_nand_ecc_algo(). - Drop OOB_FIRST placement scheme. - Introduce nand_extract_bits(). - Ensure a consistent bitflips numbering. - BCH lib: - Allow easy bit swapping. - Rework a little bit the exported function names. - Fix nand_gpio_waitrdy(). - Propage CS selection to sub operations. - Add a NAND_NO_BBM_QUIRK flag. - Give the possibility to verify a read operation is supported. - Add a helper to check supported operations. - Avoid indirect access to ->data_buf(). - Rename the use_bufpoi variables. - Fix comments about the use of bufpoi. - Rename a NAND chip option. - Reorder the nand_chip->options flags. - Translate obscure bitfields into readable macros. - Timings: - Fix default values. - Add mode information to the timings structure. Raw NAND controller driver changes: - Fixed many error paths. - Arasan - New driver - Au1550nd: - Various cleanups - Migration to ->exec_op() - brcmnand: - Misc cleanup. - Support v2.1-v2.2 controllers. - Remove unused including <linux/version.h>. - Correctly verify erased pages. - Fix Hamming OOB layout. - Cadence - Make cadence_nand_attach_chip static. - Cafe: - Set the NAND_NO_BBM_QUIRK flag - cmx270: - Remove this controller driver. - cs553x: - Misc cleanup - Migration to ->exec_op() - Davinci: - Misc cleanup. - Migration to ->exec_op() - Denali: - Add more delays before latching incoming data - Diskonchip: - Misc cleanup - Migration to ->exec_op() - Fsmc: - Change to non-atomic bit operations. - GPMI: - Use nand_extract_bits() - Fix runtime PM imbalance. - Ingenic: - Migration to exec_op() - Fix the RB gpio active-high property on qi, lb60 - Make qi_lb60_ooblayout_ops static. - Marvell: - Misc cleanup and small fixes - Nandsim: - Fix the error paths, driver wide. - Omap_elm: - Fix runtime PM imbalance. - STM32_FMC2: - Misc cleanups (error cases, comments, timeout valus, cosmetic changes). SPI NOR core changes: - Add, update support and fix few flashes. - Prepare BFPT parsing for JESD216 rev D. - Kernel doc fixes. CFI changes: - Support the absence of protection registers for Intel CFI flashes. - Replace zero-length array with flexible-arrays" * tag 'mtd/for-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (208 commits) mtd: clear cache_state to avoid writing to bad blocks repeatedly mtd: parser: cmdline: Support MTD names containing one or more colons mtd: physmap_of_gemini: remove defined but not used symbol 'syscon_match' mtd: rawnand: Add an invalid ECC mode to discriminate with valid ones mtd: rawnand: Return an enum from of_get_nand_ecc_algo() mtd: rawnand: Drop OOB_FIRST placement scheme mtd: rawnand: Avoid a typedef mtd: Fix typo in mtd_ooblayout_set_databytes() description mtd: rawnand: Stop using nand_release() mtd: rawnand: nandsim: Reorganize ns_cleanup_module() mtd: rawnand: nandsim: Rename a label in ns_init_module() mtd: rawnand: nandsim: Manage lists on error in ns_init_module() mtd: rawnand: nandsim: Fix the label pointing on nand_cleanup() mtd: rawnand: nandsim: Free erase_block_wear on error mtd: rawnand: nandsim: Use an additional label when freeing the nandsim object mtd: rawnand: nandsim: Stop using nand_release() mtd: rawnand: nandsim: Free the partition names in ns_free() mtd: rawnand: nandsim: Free the allocated device on error in ns_init() mtd: rawnand: nandsim: Free partition names on error in ns_init() mtd: rawnand: nandsim: Fix the two ns_alloc_device() error paths ...
2020-06-10Merge tag 'clk-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux Pull clk updates from Stephen Boyd: "This time around we have four lines of diff in the core framework, removing a function that isn't used anymore. Otherwise the main new thing for the common clk framework is that it is selectable in the Kconfig language now. Hopefully this will let clk drivers and clk consumers be testable on more than the architectures that support the clk framework. The goal is to introduce some Kunit tests for the framework. Outside of the core framework we have the usual set of various driver updates and non-critical fixes. The dirstat shows that the new Baikal-T1 driver is the largest addition this time around in terms of lines of code. After that the x86 (Intel), Qualcomm, and Mediatek drivers introduce many lines to support new or upcoming SoCs. After that the dirstat shows the usual suspects working on their SoC support by fixing minor bugs, correcting data and converting some of their DT bindings to YAML. Core: - Allow the COMMON_CLK config to be selectable New Drivers: - Clk driver for Baikal-T1 SoCs - Mediatek MT6765 clock support - Support for Intel Agilex clks - Add support for X1830 and X1000 Ingenic SoC clk controllers - Add support for the new Renesas RZ/G1H (R8A7742) SoC - Add support for Qualcomm's MSM8939 Generic Clock Controller Updates: - Support IDT VersaClock 5P49V5925 - Bunch of updates for HSDK clock generation unit (CGU) driver - Start making audio and GPU clks work on Marvell MMP2/MMP3 SoCs - Add some GPU, NPU, and UFS clks to Qualcomm SM8150 driver - Enable supply regulators for GPU gdscs on Qualcomm SoCs - Add support for Si5342, Si5344 and Si5345 chips - Support custom flags in Xilinx zynq firmware - Various small fixes to the Xilinx clk driver - A single minor rounding fix for the legacy Allwinner clock support - A few patches from Abel Vesa as preparation of adding audiomix clock support on i.MX - A couple of cleanups from Anson Huang for i.MX clk-sscg-pll and clk-pllv3 drivers - Drop dependency on ARM64 for i.MX8M clock driver, to support aarch32 mode on aarch64 hardware - A series from Peng Fan to improve i.MX8M clock drivers, using composite clock for core and bus clk slice - Set a better parent clock for flexcan on i.MX6UL to support CiA102 defined bit rates - A couple changes for EMC frequency scaling on Tegra210 - Support for CPU frequency scaling on Tegra20/Tegra30 - New clk gate for CSI test pattern generator on Tegra210 - Regression fixes for Samsung exynos542x and exynos5433 SoCs - Use of fallthrough; attribute for Samsung s3c24xx - Updates and fixup HDMI and video clocks on Meson8b - Fixup reset polarity on Meson8b - Fix GPU glitch free mux switch on Meson gx and g12 - A minor fix for the currently unused suspend/resume handling on Renesas RZ/A1 and RZ/A2 - Two more conversions of Renesas DT bindings to json-schema - Add support for the USB 2.0 clock selector on Renesas R-Car M3-W+" * tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (155 commits) clk: mediatek: Remove ifr{0,1}_cfg_regs structures clk: baikal-t1: remove redundant assignment to variable 'divider' clk: baikal-t1: fix spelling mistake "Uncompatible" -> "Incompatible" dt-bindings: clock: Add a missing include to MMP Audio Clock binding dt: Add bindings for IDT VersaClock 5P49V5925 clk: vc5: Add support for IDT VersaClock 5P49V6965 clk: Add Baikal-T1 CCU Dividers driver clk: Add Baikal-T1 CCU PLLs driver dt-bindings: clk: Add Baikal-T1 CCU Dividers binding dt-bindings: clk: Add Baikal-T1 CCU PLLs binding clk: mediatek: assign the initial value to clk_init_data of mtk_mux clk: mediatek: Add MT6765 clock support clk: mediatek: add mt6765 clock IDs dt-bindings: clock: mediatek: document clk bindings vcodecsys for Mediatek MT6765 SoC dt-bindings: clock: mediatek: document clk bindings mipi0a for Mediatek MT6765 SoC dt-bindings: clock: mediatek: document clk bindings for Mediatek MT6765 SoC CLK: HSDK: CGU: add support for 148.5MHz clock CLK: HSDK: CGU: support PLL bypassing CLK: HSDK: CGU: check if PLL is bypassed first clk: clk-si5341: Add support for the Si5345 series ...
2020-06-10Merge tag 'for-v5.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply Pull power supply and reset updates from Sebastian Reichel: "This time there are lots of changes. Quite a few changes to the core, lots of driver changes and one change to kobject core (with Ack from Greg). Summary: kobject: - Increase number of allowed uevent variables power-supply core: - Add power-supply type in uevent - Cleanup property handling in core - Make property and usb_type pointers const - Convert core power-supply DT binding to YAML - Cleanup HWMON code - Add new health status "calibration required" - Add new properties for manufacture date and capacity error margin battery drivers: - new cw2015 battery driver used by pine64 Pinebook Pro laptop - axp22: blacklist on Meegopad T02 - sc27xx: support current/voltage reading - max17042: support time-to-empty reading - simple-battery: add more battery parameters - bq27xxx: convert DT binding document to YAML - sbs-battery: add TI BQ20Z65 support, fix technology property, convert DT binding to YAML, add option to disable charger broadcasts, add new properties: manufacture date, capacity error margin, average current, charge current and voltage and support calibration required health status - misc fixes charger drivers: - bq25890: cleanup, implement charge type, precharge current and input current limiting properties - bd70528: use new linear range helper library - bd99954: new charger driver - mp2629: new charger driver - misc fixes reboot drivers: - oxnas-restart: introduce new driver - syscon-reboot: convert DT binding to YAML, add parent syscon device support - misc fixes" * tag 'for-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (85 commits) power: supply: cw2015: Attach OF ID table to the driver power: reset: gpio-poweroff: add missing '\n' in dev_err() Revert "power: supply: sbs-battery: simplify read_read_string_data" Revert "power: supply: sbs-battery: add PEC support" dt-bindings: power: sbs-battery: Convert to yaml power: supply: sbs-battery: constify power-supply property array power: supply: sbs-battery: switch to i2c's probe_new power: supply: sbs-battery: switch from of_property_* to device_property_* power: supply: sbs-battery: add ability to disable charger broadcasts power: supply: sbs-battery: fix idle battery status power: supply: sbs-battery: add POWER_SUPPLY_HEALTH_CALIBRATION_REQUIRED support power: supply: sbs-battery: add MANUFACTURE_DATE support power: supply: sbs-battery: add POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT/VOLTAGE_MAX support power: supply: sbs-battery: Improve POWER_SUPPLY_PROP_TECHNOLOGY support power: supply: sbs-battery: add POWER_SUPPLY_PROP_CURRENT_AVG support power: supply: sbs-battery: add PEC support power: supply: sbs-battery: simplify read_read_string_data power: supply: sbs-battery: add POWER_SUPPLY_PROP_CAPACITY_ERROR_MARGIN support power: supply: sbs-battery: Add TI BQ20Z65 support power: supply: core: add POWER_SUPPLY_HEALTH_CALIBRATION_REQUIRED ...
2020-06-10Merge tag 'dmaengine-5.8-rc1' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds
Pull dmaengine updates from Vinod Koul: "A fairly small dmaengine update which includes mostly driver updates (dmatest, dw-edma, ioat, mmp-tdma and k3-udma) along with Renesas binding update to json-schema" * tag 'dmaengine-5.8-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (39 commits) dmaengine: imx-sdma: initialize all script addresses dmaengine: ti: k3-udma: Use proper return code in alloc_chan_resources dmaengine: ti: k3-udma: Remove udma_chan.in_ring_cnt dmaengine: ti: k3-udma: Add missing dma_sync call for rx flush descriptor dmaengine: at_xdmac: Replace zero-length array with flexible-array dmaengine: at_hdmac: Replace zero-length array with flexible-array dmaengine: qcom: bam_dma: Replace zero-length array with flexible-array dmaengine: ti: k3-udma: Use PTR_ERR_OR_ZERO() to simplify code dmaengine: moxart-dma: Drop pointless static qualifier in moxart_probe() dmaengine: sf-pdma: Simplify the error handling path in 'sf_pdma_probe()' dmaengine: qcom_hidma: use true,false for bool variable dmaengine: dw-edma: support local dma device transfer semantics dmaengine: Fix doc strings to satisfy validation script dmaengine: Include dmaengine.h into dmaengine.c dmaengine: dmatest: Describe members of struct dmatest_info dmaengine: dmatest: Describe members of struct dmatest_params dmaengine: dmatest: Allow negative timeout value to specify infinite wait Revert "dmaengine: dmatest: timeout value of -1 should specify infinite wait" dmaengine: stm32-dma: direct mode support through device tree dt-bindings: dma: add direct mode support through device tree in stm32-dma ...
2020-06-10Documentation/CodingStyle: Fix duplicate "are" typoGeert Uytterhoeven
The improved paragraph about line lengths contains a sentence with a duplicate word: there is one "are" at the end of a line, followed by a second one at the beginning of the next line. Drop the first one, as that one is part of the longest line. Fixes: bdc48fa11e46f867 ("checkpatch/coding-style: deprecate 80-column warning") Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-10Merge branch 'pm-opp'Rafael J. Wysocki
* pm-opp: opp: Don't parse icc paths unnecessarily opp: Remove bandwidth votes when target_freq is zero opp: core: add regulators enable and disable opp: Reorder the code for !target_freq case opp: Expose bandwidth information via debugfs cpufreq: dt: Add support for interconnect bandwidth scaling opp: Update the bandwidth on OPP frequency changes opp: Add sanity checks in _read_opp_key() opp: Add support for parsing interconnect bandwidth interconnect: Remove unused module exit code from core interconnect: Disallow interconnect core to be built as a module interconnect: Add of_icc_get_by_index() helper function OPP: Add helpers for reading the binding properties dt-bindings: opp: Introduce opp-peak-kBps and opp-avg-kBps bindings
2020-06-09Merge tag 'fuse-update-5.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse Pull fuse updates from Miklos Szeredi: - Fix a rare deadlock in virtiofs - Fix st_blocks in writeback cache mode - Fix wrong checks in splice move causing spurious warnings - Fix a race between a GETATTR request and a FUSE_NOTIFY_INVAL_INODE notification - Use rb-tree instead of linear search for pages currently under writeout by userspace - Fix copy_file_range() inconsistencies * tag 'fuse-update-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: fuse: copy_file_range should truncate cache fuse: fix copy_file_range cache issues fuse: optimize writepages search fuse: update attr_version counter on fuse_notify_inval_inode() fuse: don't check refcount after stealing page fuse: fix weird page warning fuse: use dump_page virtiofs: do not use fuse_fill_super_common() for device installation fuse: always allow query of st_dev fuse: always flush dirty data on close(2) fuse: invalidate inode attr in writeback cache mode fuse: Update stale comment in queue_interrupt() fuse: BUG_ON correction in fuse_dev_splice_write() virtiofs: Add mount option and atime behavior to the doc virtiofs: schedule blocking async replies in separate worker
2020-06-09Merge tag 'ovl-update-5.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs Pull overlayfs updates from Miklos Szeredi: "Fixes: - Resolve mount option conflicts consistently - Sync before remount R/O - Fix file handle encoding corner cases - Fix metacopy related issues - Fix an unintialized return value - Add missing permission checks for underlying layers Optimizations: - Allow multipe whiteouts to share an inode - Optimize small writes by inheriting SB_NOSEC from upper layer - Do not call ->syncfs() multiple times for sync(2) - Do not cache negative lookups on upper layer - Make private internal mounts longterm" * tag 'ovl-update-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: (27 commits) ovl: remove unnecessary lock check ovl: make oip->index bool ovl: only pass ->ki_flags to ovl_iocb_to_rwf() ovl: make private mounts longterm ovl: get rid of redundant members in struct ovl_fs ovl: add accessor for ofs->upper_mnt ovl: initialize error in ovl_copy_xattr ovl: drop negative dentry in upper layer ovl: check permission to open real file ovl: call secutiry hook in ovl_real_ioctl() ovl: verify permissions in ovl_path_open() ovl: switch to mounter creds in readdir ovl: pass correct flags for opening real directory ovl: fix redirect traversal on metacopy dentries ovl: initialize OVL_UPPERDATA in ovl_lookup() ovl: use only uppermetacopy state in ovl_lookup() ovl: simplify setting of origin for index lookup ovl: fix out of bounds access warning in ovl_check_fb_len() ovl: return required buffer size for file handles ovl: sync dirty data when remounting to ro mode ...
2020-06-09dt-bindings: clock: Add a missing include to MMP Audio Clock bindingLubomir Rintel
The include file for input clock in the example was missing, breaking the validation. Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Reported-by: Rob Herring <robh+dt@kernel.org> Link: https://lore.kernel.org/r/20200605065258.567858-1-lkundrak@v3.sk Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-06-09Merge tag 'f2fs-for-5.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs Pull f2fs updates from Jaegeuk Kim: "In this round, we've added some knobs to enhance compression feature and harden testing environment. In addition, we've fixed several bugs reported from Android devices such as long discarding latency, device hanging during quota_sync, etc. Enhancements: - support lzo-rle algorithm - add two ioctls to release and reserve blocks for compression - support partial truncation/fiemap on compressed file - introduce sysfs entries to attach IO flags explicitly - add iostat trace point along with read io stat Bug fixes: - fix long discard latency - flush quota data by f2fs_quota_sync correctly - fix to recover parent inode number for power-cut recovery - fix lz4/zstd output buffer budget - parse checkpoint mount option correctly - avoid inifinite loop to wait for flushing node/meta pages - manage discard space correctly And some refactoring and clean up patches were added" * tag 'f2fs-for-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (51 commits) f2fs: attach IO flags to the missing cases f2fs: add node_io_flag for bio flags likewise data_io_flag f2fs: remove unused parameter of f2fs_put_rpages_mapping() f2fs: handle readonly filesystem in f2fs_ioc_shutdown() f2fs: avoid utf8_strncasecmp() with unstable name f2fs: don't return vmalloc() memory from f2fs_kmalloc() f2fs: fix retry logic in f2fs_write_cache_pages() f2fs: fix wrong discard space f2fs: compress: don't compress any datas after cp stop f2fs: remove unneeded return value of __insert_discard_tree() f2fs: fix wrong value of tracepoint parameter f2fs: protect new segment allocation in expand_inode_data f2fs: code cleanup by removing ifdef macro surrounding f2fs: avoid inifinite loop to wait for flushing node pages at cp_error f2fs: flush dirty meta pages when flushing them f2fs: fix checkpoint=disable:%u%% f2fs: compress: fix zstd data corruption f2fs: add compressed/gc data read IO stat f2fs: fix potential use-after-free issue f2fs: compress: don't handle non-compressed data in workqueue ...
2020-06-09Merge tag 'trace-v5.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing updates from Steven Rostedt: "No new features this release. Mostly clean ups, restructuring and documentation. - Have ftrace_bug() show ftrace errors before the WARN, as the WARN will reboot the box before the error messages are printed if panic_on_warn is set. - Have traceoff_on_warn disable tracing sooner (before prints) - Write a message to the trace buffer that its being disabled when disable_trace_on_warning() is set. - Separate out synthetic events from histogram code to let it be used by other parts of the kernel. - More documentation on histogram design. - Other small fixes and clean ups" * tag 'trace-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing: Remove obsolete PREEMPTIRQ_EVENTS kconfig option tracing/doc: Fix ascii-art in histogram-design.rst tracing: Add a trace print when traceoff_on_warning is triggered ftrace,bug: Improve traceoff_on_warn selftests/ftrace: Distinguish between hist and synthetic event checks tracing: Move synthetic events to a separate file tracing: Fix events.rst section numbering tracing/doc: Fix typos in histogram-design.rst tracing: Add hist_debug trace event files for histogram debugging tracing: Add histogram-design document tracing: Check state.disabled in synth event trace functions tracing/probe: reverse arguments to list_add tools/bootconfig: Add a summary of test cases and return error ftrace: show debugging information when panic_on_warn set
2020-06-09Merge tag 'linux-kselftest-kunit-5.8-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull Kunit updates from Shuah Khan: "This consists of: - Several config fragment fixes from Anders Roxell to improve test coverage. - Improvements to kunit run script to use defconfig as default and restructure the code for config/build/exec/parse from Vitor Massaru Iha and David Gow. - Miscellaneous documentation warn fix" * tag 'linux-kselftest-kunit-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: security: apparmor: default KUNIT_* fragments to KUNIT_ALL_TESTS fs: ext4: default KUNIT_* fragments to KUNIT_ALL_TESTS drivers: base: default KUNIT_* fragments to KUNIT_ALL_TESTS lib: Kconfig.debug: default KUNIT_* fragments to KUNIT_ALL_TESTS kunit: default KUNIT_* fragments to KUNIT_ALL_TESTS kunit: Kconfig: enable a KUNIT_ALL_TESTS fragment kunit: Fix TabError, remove defconfig code and handle when there is no kunitconfig kunit: use KUnit defconfig by default kunit: use --build_dir=.kunit as default Documentation: test.h - fix warnings kunit: kunit_tool: Separate out config/build/exec/parse
2020-06-09Merge tag 'linux-kselftest-5.8-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kselftest updates from Shuah Khan: "This consists of: - Several fixes from Masami Hiramatsu to improve coverage for lib and sysctl tests. - Clean up to vdso test and a new test for getcpu() from Mark Brown. - Add new gen_tar selftests Makefile target generate selftest package running "make gen_tar" in selftests directory from Veronika Kabatova. - Other miscellaneous fixes to timens, exec, tpm2 tests" * tag 'linux-kselftest-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests/sysctl: Make sysctl test driver as a module selftests/sysctl: Fix to load test_sysctl module lib: Make test_sysctl initialized as module lib: Make prime number generator independently selectable selftests/ftrace: Return unsupported if no error_log file selftests/ftrace: Use printf for backslash included command selftests/timens: handle a case when alarm clocks are not supported Kernel selftests: Add check if TPM devices are supported selftests: vdso: Add a selftest for vDSO getcpu() selftests: vdso: Use a header file to prototype parse_vdso API selftests: vdso: Rename vdso_test to vdso_test_gettimeofday selftests/exec: Verify execve of non-regular files fail selftests: introduce gen_tar Makefile target
2020-06-09Merge branch 'akpm' (patches from Andrew)Linus Torvalds
Merge even more updates from Andrew Morton: - a kernel-wide sweep of show_stack() - pagetable cleanups - abstract out accesses to mmap_sem - prep for mmap_sem scalability work - hch's user acess work Subsystems affected by this patch series: debug, mm/pagemap, mm/maccess, mm/documentation. * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (93 commits) include/linux/cache.h: expand documentation over __read_mostly maccess: return -ERANGE when probe_kernel_read() fails x86: use non-set_fs based maccess routines maccess: allow architectures to provide kernel probing directly maccess: move user access routines together maccess: always use strict semantics for probe_kernel_read maccess: remove strncpy_from_unsafe tracing/kprobes: handle mixed kernel/userspace probes better bpf: rework the compat kernel probe handling bpf:bpf_seq_printf(): handle potentially unsafe format string better bpf: handle the compat string in bpf_trace_copy_string better bpf: factor out a bpf_trace_copy_string helper maccess: unify the probe kernel arch hooks maccess: remove probe_read_common and probe_write_common maccess: rename strnlen_unsafe_user to strnlen_user_nofault maccess: rename strncpy_from_unsafe_strict to strncpy_from_kernel_nofault maccess: rename strncpy_from_unsafe_user to strncpy_from_user_nofault maccess: update the top of file comment maccess: clarify kerneldoc comments maccess: remove duplicate kerneldoc comments ...
2020-06-09mmap locking API: convert mmap_sem commentsMichel Lespinasse
Convert comments that reference mmap_sem to reference mmap_lock instead. [akpm@linux-foundation.org: fix up linux-next leftovers] [akpm@linux-foundation.org: s/lockaphore/lock/, per Vlastimil] [akpm@linux-foundation.org: more linux-next fixups, per Michel] Signed-off-by: Michel Lespinasse <walken@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com> Cc: Davidlohr Bueso <dbueso@suse.de> Cc: David Rientjes <rientjes@google.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Jerome Glisse <jglisse@redhat.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Laurent Dufour <ldufour@linux.ibm.com> Cc: Liam Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ying Han <yinghan@google.com> Link: http://lkml.kernel.org/r/20200520052908.204642-13-walken@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-09mmap locking API: convert mmap_sem API commentsMichel Lespinasse
Convert comments that reference old mmap_sem APIs to reference corresponding new mmap locking APIs instead. Signed-off-by: Michel Lespinasse <walken@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Davidlohr Bueso <dbueso@suse.de> Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com> Cc: David Rientjes <rientjes@google.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Jerome Glisse <jglisse@redhat.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Laurent Dufour <ldufour@linux.ibm.com> Cc: Liam Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ying Han <yinghan@google.com> Link: http://lkml.kernel.org/r/20200520052908.204642-12-walken@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-09Merge branch 'x86/srbds' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 srbds fixes from Thomas Gleixner: "The 9th episode of the dime novel "The performance killer" with the subtitle "Slow Randomizing Boosts Denial of Service". SRBDS is an MDS-like speculative side channel that can leak bits from the random number generator (RNG) across cores and threads. New microcode serializes the processor access during the execution of RDRAND and RDSEED. This ensures that the shared buffer is overwritten before it is released for reuse. This is equivalent to a full bus lock, which means that many threads running the RNG instructions in parallel have the same effect as the same amount of threads issuing a locked instruction targeting an address which requires locking of two cachelines at once. The mitigation support comes with the usual pile of unpleasant ingredients: - command line options - sysfs file - microcode checks - a list of vulnerable CPUs identified by model and stepping this time which requires stepping match support for the cpu match logic. - the inevitable slowdown of affected CPUs" * branch 'x86/srbds' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/speculation: Add Ivy Bridge to affected list x86/speculation: Add SRBDS vulnerability and mitigation documentation x86/speculation: Add Special Register Buffer Data Sampling (SRBDS) mitigation x86/cpu: Add 'table' argument to cpu_matches()
2020-06-08f2fs: add node_io_flag for bio flags likewise data_io_flagJaegeuk Kim
This patch adds another way to attach bio flags to node writes. Description: Give a way to attach REQ_META|FUA to node writes given temperature-based bits. Now the bits indicate: * REQ_META | REQ_FUA | * 5 | 4 | 3 | 2 | 1 | 0 | * Cold | Warm | Hot | Cold | Warm | Hot | Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2020-06-08Merge tag 'rproc-v5.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc Pull remoteproc updates from Bjorn Andersson: "This introduces device managed versions of functions used to register remoteproc devices, add support for remoteproc driver specific resource control, enables remoteproc drivers to specify ELF class and machine for coredumps. It integrates pm_runtime in the core for keeping resources active while the remote is booted and holds a wake source while recoverying a remote processor after a firmware crash. It refactors the remoteproc device's allocation path to simplify the logic, fix a few cleanup bugs and to not clone const strings onto the heap. Debugfs code is simplifies using the DEFINE_SHOW_ATTRIBUTE and a zero-length array is replaced with flexible-array. A new remoteproc driver for the JZ47xx VPU is introduced, the Qualcomm SM8250 gains support for audio, compute and sensor remoteprocs and the Qualcomm SC7180 modem support is cleaned up and improved. The Qualcomm glink subsystem-restart driver is merged into the main glink driver, the Qualcomm sysmon driver is extended to properly notify remote processors about all other remote processors' state transitions" * tag 'rproc-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc: (43 commits) remoteproc: Fix an error code in devm_rproc_alloc() MAINTAINERS: Add myself as reviewer for Ingenic rproc driver remoteproc: ingenic: Added remoteproc driver remoteproc: Add support for runtime PM dt-bindings: Document JZ47xx VPU auxiliary processor remoteproc: wcss: Fix arguments passed to qcom_add_glink_subdev() remoteproc: Fix and restore the parenting hierarchy for vdev remoteproc: Fall back to using parent memory pool if no dedicated available remoteproc: Replace zero-length array with flexible-array remoteproc: wcss: add support for rpmsg communication remoteproc: core: Prevent system suspend during remoteproc recovery remoteproc: qcom_q6v5_mss: Remove unused q6v5_da_to_va function remoteproc: qcom_q6v5_mss: map/unmap mpss segments before/after use remoteproc: qcom_q6v5_mss: Drop accesses to MPSS PERPH register space dt-bindings: remoteproc: qcom: Replace halt-nav with spare-regs remoteproc: qcom: pas: Add SM8250 PAS remoteprocs dt-bindings: remoteproc: qcom: pas: Add SM8250 remoteprocs remoteproc: qcom_q6v5_mss: Extract mba/mpss from memory-region dt-bindings: remoteproc: qcom: Use memory-region to reference memory remoteproc: qcom: pas: Add SC7180 Modem support ...
2020-06-08Merge tag 'gfs2-for-5.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2 Pull gfs2 updates from Andreas Gruenbacher: - An iopen glock locking scheme rework that speeds up deletes of inodes accessed from multiple nodes - Various bug fixes and debugging improvements - Convert gfs2-glocks.txt to ReST * tag 'gfs2-for-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2: gfs2: fix use-after-free on transaction ail lists gfs2: new slab for transactions gfs2: initialize transaction tr_ailX_lists earlier gfs2: Smarter iopen glock waiting gfs2: Wake up when setting GLF_DEMOTE gfs2: Check inode generation number in delete_work_func gfs2: Move inode generation number check into gfs2_inode_lookup gfs2: Minor gfs2_lookup_by_inum cleanup gfs2: Try harder to delete inodes locally gfs2: Give up the iopen glock on contention gfs2: Turn gl_delete into a delayed work gfs2: Keep track of deleted inode generations in LVBs gfs2: Allow ASPACE glocks to also have an lvb gfs2: instrumentation wrt log_flush stuck gfs2: introduce new gfs2_glock_assert_withdraw gfs2: print mapping->nrpages in glock dump for address space glocks gfs2: Only do glock put in gfs2_create_inode for free inodes gfs2: Allow lock_nolock mount to specify jid=X gfs2: Don't ignore inode write errors during inode_go_sync docs: filesystems: convert gfs2-glocks.txt to ReST
2020-06-08Merge tag 's390-5.8-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Vasily Gorbik: - Add support for multi-function devices in pci code. - Enable PF-VF linking for architectures using the pdev->no_vf_scan flag (currently just s390). - Add reipl from NVMe support. - Get rid of critical section cleanup in entry.S. - Refactor PNSO CHSC (perform network subchannel operation) in cio and qeth. - QDIO interrupts and error handling fixes and improvements, more refactoring changes. - Align ioremap() with generic code. - Accept requests without the prefetch bit set in vfio-ccw. - Enable path handling via two new regions in vfio-ccw. - Other small fixes and improvements all over the code. * tag 's390-5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (52 commits) vfio-ccw: make vfio_ccw_regops variables declarations static vfio-ccw: Add trace for CRW event vfio-ccw: Wire up the CRW irq and CRW region vfio-ccw: Introduce a new CRW region vfio-ccw: Refactor IRQ handlers vfio-ccw: Introduce a new schib region vfio-ccw: Refactor the unregister of the async regions vfio-ccw: Register a chp_event callback for vfio-ccw vfio-ccw: Introduce new helper functions to free/destroy regions vfio-ccw: document possible errors vfio-ccw: Enable transparent CCW IPL from DASD s390/pci: Log new handle in clp_disable_fh() s390/cio, s390/qeth: cleanup PNSO CHSC s390/qdio: remove q->first_to_kick s390/qdio: fix up qdio_start_irq() kerneldoc s390: remove critical section cleanup from entry.S s390: add machine check SIGP s390/pci: ioremap() align with generic code s390/ap: introduce new ap function ap_get_qdev() Documentation/s390: Update / remove developerWorks web links ...
2020-06-08Merge tag 'iommu-updates-v5.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull iommu updates from Joerg Roedel: "A big part of this is a change in how devices get connected to IOMMUs in the core code. It contains the change from the old add_device() / remove_device() to the new probe_device() / release_device() call-backs. As a result functionality that was previously in the IOMMU drivers has been moved to the IOMMU core code, including IOMMU group allocation for each device. The reason for this change was to get more robust allocation of default domains for the iommu groups. A couple of fixes were necessary after this was merged into the IOMMU tree, but there are no known bugs left. The last fix is applied on-top of the merge commit for the topic branches. Other than that change, we have: - Removal of the driver private domain handling in the Intel VT-d driver. This was fragile code and I am glad it is gone now. - More Intel VT-d updates from Lu Baolu: - Nested Shared Virtual Addressing (SVA) support to the Intel VT-d driver - Replacement of the Intel SVM interfaces to the common IOMMU SVA API - SVA Page Request draining support - ARM-SMMU Updates from Will: - Avoid mapping reserved MMIO space on SMMUv3, so that it can be claimed by the PMU driver - Use xarray to manage ASIDs on SMMUv3 - Reword confusing shutdown message - DT compatible string updates - Allow implementations to override the default domain type - A new IOMMU driver for the Allwinner Sun50i platform - Support for ATS gets disabled for untrusted devices (like Thunderbolt devices). This includes a PCI patch, acked by Bjorn. - Some cleanups to the AMD IOMMU driver to make more use of IOMMU core features. - Unification of some printk formats in the Intel and AMD IOMMU drivers and in the IOVA code. - Updates for DT bindings - A number of smaller fixes and cleanups. * tag 'iommu-updates-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (109 commits) iommu: Check for deferred attach in iommu_group_do_dma_attach() iommu/amd: Remove redundant devid checks iommu/amd: Store dev_data as device iommu private data iommu/amd: Merge private header files iommu/amd: Remove PD_DMA_OPS_MASK iommu/amd: Consolidate domain allocation/freeing iommu/amd: Free page-table in protection_domain_free() iommu/amd: Allocate page-table in protection_domain_init() iommu/amd: Let free_pagetable() not rely on domain->pt_root iommu/amd: Unexport get_dev_data() iommu/vt-d: Fix compile warning iommu/vt-d: Remove real DMA lookup in find_domain iommu/vt-d: Allocate domain info for real DMA sub-devices iommu/vt-d: Only clear real DMA device's context entries iommu: Remove iommu_sva_ops::mm_exit() uacce: Remove mm_exit() op iommu/sun50i: Constify sun50i_iommu_ops iommu/hyper-v: Constify hyperv_ir_domain_ops iommu/vt-d: Use pci_ats_supported() iommu/arm-smmu-v3: Use pci_ats_supported() ...
2020-06-08Merge branch 'akpm' (patches from Andrew)Linus Torvalds
Merge still more updates from Andrew Morton: "Various trees. Mainly those parts of MM whose linux-next dependents are now merged. I'm still sitting on ~160 patches which await merges from -next. Subsystems affected by this patch series: mm/proc, ipc, dynamic-debug, panic, lib, sysctl, mm/gup, mm/pagemap" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (52 commits) doc: cgroup: update note about conditions when oom killer is invoked module: move the set_fs hack for flush_icache_range to m68k nommu: use flush_icache_user_range in brk and mmap binfmt_flat: use flush_icache_user_range exec: use flush_icache_user_range in read_code exec: only build read_code when needed m68k: implement flush_icache_user_range arm: rename flush_cache_user_range to flush_icache_user_range xtensa: implement flush_icache_user_range sh: implement flush_icache_user_range asm-generic: add a flush_icache_user_range stub mm: rename flush_icache_user_range to flush_icache_user_page arm,sparc,unicore32: remove flush_icache_user_range riscv: use asm-generic/cacheflush.h powerpc: use asm-generic/cacheflush.h openrisc: use asm-generic/cacheflush.h m68knommu: use asm-generic/cacheflush.h microblaze: use asm-generic/cacheflush.h ia64: use asm-generic/cacheflush.h hexagon: use asm-generic/cacheflush.h ...
2020-06-08doc: cgroup: update note about conditions when oom killer is invokedKonstantin Khlebnikov
Starting from v4.19 commit 29ef680ae7c2 ("memcg, oom: move out_of_memory back to the charge path") cgroup oom killer is no longer invoked only from page faults. Now it implements the same semantics as global OOM killer: allocation context invokes OOM killer and keeps retrying until success. [akpm@linux-foundation.org: fixes per Randy] Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Roman Gushchin <guro@fb.com> Cc: Randy Dunlap <rdunlap@infradead.org> Link: http://lkml.kernel.org/r/158894738928.208854.5244393925922074518.stgit@buzz Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-08docs: mm/gup: pin_user_pages.rst: add a "case 5"John Hubbard
Patch series "vhost, docs: convert to pin_user_pages(), new "case 5"" It recently became clear to me that there are some get_user_pages*() callers that don't fit neatly into any of the four cases that are so far listed in pin_user_pages.rst. vhost.c is one of those. Add a Case 5 to the documentation, and refer to that when converting vhost.c. Thanks to Jan Kara for helping me (again) in understanding the interaction between get_user_pages() and page writeback [1]. This is based on today's mmotm, which has a nearby patch to pin_user_pages.rst that rewords cases 3 and 4. Note that I have only compile-tested the vhost.c patch, although that does also include cross-compiling for a few other arches. Any run-time testing would be greatly appreciated. [1] https://lore.kernel.org/r/20200529070343.GL14550@quack2.suse.cz This patch (of 2): There are four cases listed in pin_user_pages.rst. These are intended to help developers figure out whether to use get_user_pages*(), or pin_user_pages*(). However, the four cases do not cover all the situations. For example, drivers/vhost/vhost.c has a "pin, write to page, set page dirty, unpin" case. Add a fifth case, to help explain that there is a general pattern that requires pin_user_pages*() API calls. [jhubbard@nvidia.com: v2] Link: http://lkml.kernel.org/r/20200601052633.853874-2-jhubbard@nvidia.com Signed-off-by: John Hubbard <jhubbard@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Jan Kara <jack@suse.cz> Cc: Jérôme Glisse <jglisse@redhat.com> Cc: Dave Chinner <david@fromorbit.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Souptick Joarder <jrdr.linux@gmail.com> Cc: "Michael S . Tsirkin" <mst@redhat.com> Cc: Jason Wang <jasowang@redhat.com> Link: http://lkml.kernel.org/r/20200529234309.484480-1-jhubbard@nvidia.com Link: http://lkml.kernel.org/r/20200529234309.484480-2-jhubbard@nvidia.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-08mm/gup: update pin_user_pages.rst for "case 3" (mmu notifiers)John Hubbard
Update case 3 so that it covers the use of mmu notifiers, for hardware that does, or does not have replayable page faults. Also, elaborate case 4 slightly, as it was quite cryptic. Signed-off-by: John Hubbard <jhubbard@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Jérôme Glisse <jglisse@redhat.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Jan Kara <jack@suse.cz> Cc: Dave Chinner <david@fromorbit.com> Cc: Jonathan Corbet <corbet@lwn.net> Link: http://lkml.kernel.org/r/20200527194953.11130-1-jhubbard@nvidia.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-08panic: add sysctl to dump all CPUs backtraces on oops eventGuilherme G. Piccoli
Usually when the kernel reaches an oops condition, it's a point of no return; in case not enough debug information is available in the kernel splat, one of the last resorts would be to collect a kernel crash dump and analyze it. The problem with this approach is that in order to collect the dump, a panic is required (to kexec-load the crash kernel). When in an environment of multiple virtual machines, users may prefer to try living with the oops, at least until being able to properly shutdown their VMs / finish their important tasks. This patch implements a way to collect a bit more debug details when an oops event is reached, by printing all the CPUs backtraces through the usage of NMIs (on architectures that support that). The sysctl added (and documented) here was called "oops_all_cpu_backtrace", and when set will (as the name suggests) dump all CPUs backtraces. Far from ideal, this may be the last option though for users that for some reason cannot panic on oops. Most of times oopses are clear enough to indicate the kernel portion that must be investigated, but in virtual environments it's possible to observe hypervisor/KVM issues that could lead to oopses shown in other guests CPUs (like virtual APIC crashes). This patch hence aims to help debug such complex issues without resorting to kdump. Signed-off-by: Guilherme G. Piccoli <gpiccoli@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Kees Cook <keescook@chromium.org> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Iurii Zaikin <yzaikin@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Matthew Wilcox <willy@infradead.org> Link: http://lkml.kernel.org/r/20200327224116.21030-1-gpiccoli@canonical.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-08kernel/hung_task.c: introduce sysctl to print all traces when a hung task is ↵Guilherme G. Piccoli
detected Commit 401c636a0eeb ("kernel/hung_task.c: show all hung tasks before panic") introduced a change in that we started to show all CPUs backtraces when a hung task is detected _and_ the sysctl/kernel parameter "hung_task_panic" is set. The idea is good, because usually when observing deadlocks (that may lead to hung tasks), the culprit is another task holding a lock and not necessarily the task detected as hung. The problem with this approach is that dumping backtraces is a slightly expensive task, specially printing that on console (and specially in many CPU machines, as servers commonly found nowadays). So, users that plan to collect a kdump to investigate the hung tasks and narrow down the deadlock definitely don't need the CPUs backtrace on dmesg/console, which will delay the panic and pollute the log (crash tool would easily grab all CPUs traces with 'bt -a' command). Also, there's the reciprocal scenario: some users may be interested in seeing the CPUs backtraces but not have the system panic when a hung task is detected. The current approach hence is almost as embedding a policy in the kernel, by forcing the CPUs backtraces' dump (only) on hung_task_panic. This patch decouples the panic event on hung task from the CPUs backtraces dump, by creating (and documenting) a new sysctl called "hung_task_all_cpu_backtrace", analog to the approach taken on soft/hard lockups, that have both a panic and an "all_cpu_backtrace" sysctl to allow individual control. The new mechanism for dumping the CPUs backtraces on hung task detection respects "hung_task_warnings" by not dumping the traces in case there's no warnings left. Signed-off-by: Guilherme G. Piccoli <gpiccoli@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Kees Cook <keescook@chromium.org> Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Link: http://lkml.kernel.org/r/20200327223646.20779-1-gpiccoli@canonical.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-08kernel/watchdog.c: convert {soft/hard}lockup boot parameters to sysctl aliasesGuilherme G. Piccoli
After a recent change introduced by Vlastimil's series [0], kernel is able now to handle sysctl parameters on kernel command line; also, the series introduced a simple infrastructure to convert legacy boot parameters (that duplicate sysctls) into sysctl aliases. This patch converts the watchdog parameters softlockup_panic and {hard,soft}lockup_all_cpu_backtrace to use the new alias infrastructure. It fixes the documentation too, since the alias only accepts values 0 or 1, not the full range of integers. We also took the opportunity here to improve the documentation of the previously converted hung_task_panic (see the patch series [0]) and put the alias table in alphabetical order. [0] http://lkml.kernel.org/r/20200427180433.7029-1-vbabka@suse.cz Signed-off-by: Guilherme G. Piccoli <gpiccoli@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Kees Cook <keescook@chromium.org> Cc: Iurii Zaikin <yzaikin@google.com> Cc: Luis Chamberlain <mcgrof@kernel.org> Link: http://lkml.kernel.org/r/20200507214624.21911-1-gpiccoli@canonical.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-08kernel/hung_task convert hung_task_panic boot parameter to sysctlVlastimil Babka
We can now handle sysctl parameters on kernel command line and have infrastructure to convert legacy command line options that duplicate sysctl to become a sysctl alias. This patch converts the hung_task_panic parameter. Note that the sysctl handler is more strict and allows only 0 and 1, while the legacy parameter allowed any non-zero value. But there is little reason anyone would not be using 1. Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Christian Brauner <christian.brauner@ubuntu.com> Cc: David Rientjes <rientjes@google.com> Cc: "Eric W . Biederman" <ebiederm@xmission.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Guilherme G . Piccoli" <gpiccoli@canonical.com> Cc: Iurii Zaikin <yzaikin@google.com> Cc: Ivan Teterevkov <ivan.teterevkov@nutanix.com> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20200427180433.7029-4-vbabka@suse.cz Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-08kernel/sysctl: support setting sysctl parameters from kernel command lineVlastimil Babka
Patch series "support setting sysctl parameters from kernel command line", v3. This series adds support for something that seems like many people always wanted but nobody added it yet, so here's the ability to set sysctl parameters via kernel command line options in the form of sysctl.vm.something=1 The important part is Patch 1. The second, not so important part is an attempt to clean up legacy one-off parameters that do the same thing as a sysctl. I don't want to remove them completely for compatibility reasons, but with generic sysctl support the idea is to remove the one-off param handlers and treat the parameters as aliases for the sysctl variants. I have identified several parameters that mention sysctl counterparts in Documentation/admin-guide/kernel-parameters.txt but there might be more. The conversion also has varying level of success: - numa_zonelist_order is converted in Patch 2 together with adding the necessary infrastructure. It's easy as it doesn't really do anything but warn on deprecated value these days. - hung_task_panic is converted in Patch 3, but there's a downside that now it only accepts 0 and 1, while previously it was any integer value - nmi_watchdog maps to two sysctls nmi_watchdog and hardlockup_panic, so there's no straighforward conversion possible - traceoff_on_warning is a flag without value and it would be required to handle that somehow in the conversion infractructure, which seems pointless for a single flag This patch (of 5): A recently proposed patch to add vm_swappiness command line parameter in addition to existing sysctl [1] made me wonder why we don't have a general support for passing sysctl parameters via command line. Googling found only somebody else wondering the same [2], but I haven't found any prior discussion with reasons why not to do this. Settings the vm_swappiness issue aside (the underlying issue might be solved in a different way), quick search of kernel-parameters.txt shows there are already some that exist as both sysctl and kernel parameter - hung_task_panic, nmi_watchdog, numa_zonelist_order, traceoff_on_warning. A general mechanism would remove the need to add more of those one-offs and might be handy in situations where configuration by e.g. /etc/sysctl.d/ is impractical. Hence, this patch adds a new parse_args() pass that looks for parameters prefixed by 'sysctl.' and tries to interpret them as writes to the corresponding sys/ files using an temporary in-kernel procfs mount. This mechanism was suggested by Eric W. Biederman [3], as it handles all dynamically registered sysctl tables, even though we don't handle modular sysctls. Errors due to e.g. invalid parameter name or value are reported in the kernel log. The processing is hooked right before the init process is loaded, as some handlers might be more complicated than simple setters and might need some subsystems to be initialized. At the moment the init process can be started and eventually execute a process writing to /proc/sys/ then it should be also fine to do that from the kernel. Sysctls registered later on module load time are not set by this mechanism - it's expected that in such scenarios, setting sysctl values from userspace is practical enough. [1] https://lore.kernel.org/r/BL0PR02MB560167492CA4094C91589930E9FC0@BL0PR02MB5601.namprd02.prod.outlook.com/ [2] https://unix.stackexchange.com/questions/558802/how-to-set-sysctl-using-kernel-command-line-parameter [3] https://lore.kernel.org/r/87bloj2skm.fsf@x220.int.ebiederm.org/ Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Luis Chamberlain <mcgrof@kernel.org> Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Kees Cook <keescook@chromium.org> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Iurii Zaikin <yzaikin@google.com> Cc: Ivan Teterevkov <ivan.teterevkov@nutanix.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: "Eric W . Biederman" <ebiederm@xmission.com> Cc: "Guilherme G . Piccoli" <gpiccoli@canonical.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Christian Brauner <christian.brauner@ubuntu.com> Link: http://lkml.kernel.org/r/20200427180433.7029-1-vbabka@suse.cz Link: http://lkml.kernel.org/r/20200427180433.7029-2-vbabka@suse.cz Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-08kernel: add panic_on_taintRafael Aquini
Analogously to the introduction of panic_on_warn, this patch introduces a kernel option named panic_on_taint in order to provide a simple and generic way to stop execution and catch a coredump when the kernel gets tainted by any given flag. This is useful for debugging sessions as it avoids having to rebuild the kernel to explicitly add calls to panic() into the code sites that introduce the taint flags of interest. For instance, if one is interested in proceeding with a post-mortem analysis at the point a given code path is hitting a bad page (i.e. unaccount_page_cache_page(), or slab_bug()), a coredump can be collected by rebooting the kernel with 'panic_on_taint=0x20' amended to the command line. Another, perhaps less frequent, use for this option would be as a means for assuring a security policy case where only a subset of taints, or no single taint (in paranoid mode), is allowed for the running system. The optional switch 'nousertaint' is handy in this particular scenario, as it will avoid userspace induced crashes by writes to sysctl interface /proc/sys/kernel/tainted causing false positive hits for such policies. [akpm@linux-foundation.org: tweak kernel-parameters.txt wording] Suggested-by: Qian Cai <cai@lca.pw> Signed-off-by: Rafael Aquini <aquini@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Luis Chamberlain <mcgrof@kernel.org> Cc: Dave Young <dyoung@redhat.com> Cc: Baoquan He <bhe@redhat.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kees Cook <keescook@chromium.org> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Adrian Bunk <bunk@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Laura Abbott <labbott@redhat.com> Cc: Jeff Mahoney <jeffm@suse.com> Cc: Jiri Kosina <jikos@kernel.org> Cc: Takashi Iwai <tiwai@suse.de> Link: http://lkml.kernel.org/r/20200515175502.146720-1-aquini@redhat.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-08dynamic_debug: add an option to enable dynamic debug for modules onlyOrson Zhai
Instead of enabling dynamic debug globally with CONFIG_DYNAMIC_DEBUG, CONFIG_DYNAMIC_DEBUG_CORE will only enable core function of dynamic debug. With the DYNAMIC_DEBUG_MODULE defined for any modules, dynamic debug will be tied to them. This is useful for people who only want to enable dynamic debug for kernel modules without worrying about kernel image size and memory consumption is increasing too much. [orson.zhai@unisoc.com: v2] Link: http://lkml.kernel.org/r/1587408228-10861-1-git-send-email-orson.unisoc@gmail.com Signed-off-by: Orson Zhai <orson.zhai@unisoc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Petr Mladek <pmladek@suse.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Jason Baron <jbaron@akamai.com> Cc: Randy Dunlap <rdunlap@infradead.org> Link: http://lkml.kernel.org/r/1586521984-5890-1-git-send-email-orson.unisoc@gmail.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-08docs/memory-barriers.txt/kokr: smp_mb__{before,after}_atomic(): update ↵SeongJae Park
Documentation Translate this commit to Korean: 39323c64b8a9 ("smp_mb__{before,after}_atomic(): update Documentation") Signed-off-by: SeongJae Park <sjpark@amazon.de> Reviewed-by: Yunjae Lee <lyj7694@gmail.com> Link: https://lore.kernel.org/r/20200606083746.20869-1-sjpark@amazon.de Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-06-08Documentation: devres: add missing entry for ↵Dejin Zheng
devm_platform_get_and_ioremap_resource() The devm_platform_get_and_ioremap_resource() should be documented in devres.rst. Add the missing entry. Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com> Link: https://lore.kernel.org/r/20200527144531.9376-1-zhengdejin5@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-06-08Replace HTTP links with HTTPS ones: documentationAlexander A. Klimov
Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Link: https://lore.kernel.org/r/20200526060544.25127-1-grandmaster@al2klimov.de Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-06-08docs: it_IT: address invalid reference warningsLukas Bulwahn
Documentation generation warns: it_IT/kernel-hacking/hacking.rst: WARNING: unknown document: ../core-api/symbol/namespaces it_IT/process/5.Posting.rst: WARNING: undefined label: it_email_clients it_IT/process/submitting-patches.rst: WARNING: undefined label: it_email_clients it_IT/process/howto.rst: WARNING: undefined label: it_managementstyle Refer to English documentation, as Italian translation does not exist, and add labels for Italian process documents to resolve label references. Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Link: https://lore.kernel.org/r/20200531185618.7099-1-lukas.bulwahn@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-06-08doc: zh_CN: use doc reference to resolve undefined label warningLukas Bulwahn
Documentation generation warns: Documentation/translations/zh_CN/filesystems/debugfs.rst:5: WARNING: undefined label: debugfs_index Use doc reference for files rather than introducing a label to refer to. This resolves the warning above. Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Reviewed-by: Alex Shi <alex.shi@linux.alibaba.com> Link: https://lore.kernel.org/r/20200531183556.5751-1-lukas.bulwahn@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-06-08docs: Update the location of the LF NDA programJonathan Corbet
The link to the Linux Foundation NDA program got broken in one of their web-site thrashups; now that the information is back online, point to its current location. This should last until the next thrashup... Reported-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Reviewed-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-06-08docs: dev-tools: coccinelle: underlinesHeinrich Schuchardt
Underline lengths should match the lengths of headings to avoid build warnings with Sphinx. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Acked-by: Julia Lawall <julia.lawall@inria.fr> Link: https://lore.kernel.org/r/20200605030405.6479-1-xypron.glpk@gmx.de Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-06-07Merge tag 'pinctrl-v5.8-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl Pull pin control updates from Linus Walleij: "This is the bulk of pin control changes for the v5.8 kernel cycle. It's just really boring this time. Zero core changes. Just linear development, cleanups and misc noncritical fixes. Some new drivers for very new Qualcomm and Intel chips. New drivers: - Intel Jasper Lake support. - NXP Freescale i.MX8DXL support. - Qualcomm SM8250 support. - Renesas R8A7742 SH-PFC support. Driver improvements: - Severe cleanup and modernization of the MCP23s08 driver. - Mediatek driver modularized. - Setting config supported in the Meson driver. - Wakeup support for the Broadcom BCM7211" * tag 'pinctrl-v5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (72 commits) pinctrl: sprd: Fix the incorrect pull-up definition pinctrl: pxa: pxa2xx: Remove 'pxa2xx_pinctrl_exit()' which is unused and broken pinctrl: freescale: imx: Use 'devm_of_iomap()' to avoid a resource leak in case of error in 'imx_pinctrl_probe()' pinctrl: freescale: imx: Fix an error handling path in 'imx_pinctrl_probe()' pinctrl: sirf: add missing put_device() call in sirfsoc_gpio_probe() pinctrl: imxl: Fix an error handling path in 'imx1_pinctrl_core_probe()' pinctrl: bcm2835: Add support for wake-up interrupts pinctrl: bcm2835: Match BCM7211 compatible string dt-bindings: pinctrl: Document optional BCM7211 wake-up interrupts dt-bindings: pinctrl: Document 7211 compatible for brcm, bcm2835-gpio.txt dt-bindings: pinctrl: stm32: Add missing interrupts property pinctrl: at91-pio4: Add COMPILE_TEST support pinctrl: Fix return value about devm_platform_ioremap_resource() MAINTAINERS: Renesas Pin Controllers are supported dt-bindings: pinctrl: ocelot: Add Sparx5 SoC support pinctrl: ocelot: Fix GPIO interrupt decoding on Jaguar2 pinctrl: ocelot: Remove instance number from pin functions pinctrl: ocelot: Always register GPIO driver dt-bindings: pinctrl: rockchip: update example pinctrl: amd: Add ACPI dependency ...
2020-06-07Merge tag 'char-misc-5.8-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here is the large set of char/misc driver patches for 5.8-rc1 Included in here are: - habanalabs driver updates, loads - mhi bus driver updates - extcon driver updates - clk driver updates (approved by the clock maintainer) - firmware driver updates - fpga driver updates - gnss driver updates - coresight driver updates - interconnect driver updates - parport driver updates (it's still alive!) - nvmem driver updates - soundwire driver updates - visorbus driver updates - w1 driver updates - various misc driver updates In short, loads of different driver subsystem updates along with the drivers as well. All have been in linux-next for a while with no reported issues" * tag 'char-misc-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (233 commits) habanalabs: correctly cast u64 to void* habanalabs: initialize variable to default value extcon: arizona: Fix runtime PM imbalance on error extcon: max14577: Add proper dt-compatible strings extcon: adc-jack: Fix an error handling path in 'adc_jack_probe()' extcon: remove redundant assignment to variable idx w1: omap-hdq: print dev_err if irq flags are not cleared w1: omap-hdq: fix interrupt handling which did show spurious timeouts w1: omap-hdq: fix return value to be -1 if there is a timeout w1: omap-hdq: cleanup to add missing newline for some dev_dbg /dev/mem: Revoke mappings when a driver claims the region misc: xilinx-sdfec: convert get_user_pages() --> pin_user_pages() misc: xilinx-sdfec: cleanup return value in xsdfec_table_write() misc: xilinx-sdfec: improve get_user_pages_fast() error handling nvmem: qfprom: remove incorrect write support habanalabs: handle MMU cache invalidation timeout habanalabs: don't allow hard reset with open processes habanalabs: GAUDI does not support soft-reset habanalabs: add print for soft reset due to event habanalabs: improve MMU cache invalidation code ...
2020-06-07Merge tag 'driver-core-5.8-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here is the set of driver core patches for 5.8-rc1. Not all that huge this release, just a number of small fixes and updates: - software node fixes - kobject now sends KOBJ_REMOVE when it is removed from sysfs, not when it is removed from memory (which could come much later) - device link additions and fixes based on testing on more devices - firmware core cleanups - other minor changes, full details in the shortlog All have been in linux-next for a while with no reported issues" * tag 'driver-core-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (23 commits) driver core: Update device link status correctly for SYNC_STATE_ONLY links firmware_loader: change enum fw_opt to u32 software node: implement software_node_unregister() kobject: send KOBJ_REMOVE uevent when the object is removed from sysfs driver core: Remove unnecessary is_fwnode_dev variable in device_add() drivers property: When no children in primary, try secondary driver core: platform: Fix spelling errors in platform.c driver core: Remove check in driver_deferred_probe_force_trigger() of: platform: Batch fwnode parsing when adding all top level devices driver core: fw_devlink: Add support for batching fwnode parsing driver core: Look for waiting consumers only for a fwnode's primary device driver core: Move code to the right part of the file Revert "Revert "driver core: Set fw_devlink to "permissive" behavior by default"" drivers: base: Fix NULL pointer exception in __platform_driver_probe() if a driver developer is foolish firmware_loader: move fw_fallback_config to a private kernel symbol namespace driver core: Add missing '\n' in log messages driver/base/soc: Use kobj_to_dev() API Add documentation on meaning of -EPROBE_DEFER driver core: platform: remove redundant assignment to variable ret debugfs: Use the correct style for SPDX License Identifier ...
2020-06-07Merge tag 'staging-5.8-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging/IIO driver updates from Greg KH: "Here is the large set of staging and IIO driver changes for 5.8-rc1 Nothing major, but a lot of new IIO drivers are included in here, along with other core iio cleanups and changes. On the staging driver front, again, nothing noticable. No new deletions or additions, just a ton of tiny cleanups all over the tree done by a lot of different people. Most coding style, but many actual real fixes and cleanups that are nice to see. All of these have been in linux-next for a while with no reported issues" * tag 'staging-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (618 commits) staging: rtl8723bs: Use common packet header constants staging: sm750fb: Add names to proc_setBLANK args staging: most: usb: init return value in default path of switch/case expression staging: vchiq: Get rid of VCHIQ_SERVICE_OPENEND callback reason staging: vchiq: move vchiq_release_message() into vchiq staging: vchi: Get rid of C++ guards staging: vchi: Get rid of not implemented function declarations staging: vchi: Get rid of vchiq_status_to_vchi() staging: vchi: Get rid of vchi_service_set_option() staging: vchi: Merge vchi_msg_queue() into vchi_queue_kernel_message() staging: vchiq: Move copy callback handling into vchiq staging: vchi: Get rid of vchi_queue_user_message() staging: vchi: Get rid of vchi_service_destroy() staging: most: usb: use function sysfs_streq staging: most: usb: add missing put_device calls staging: most: usb: use correct error codes staging: most: usb: replace code to calculate array index staging: most: usb: don't use error path to exit function on success staging: most: usb: move allocation of URB out of critical section staging: most: usb: return 0 instead of variable ...
2020-06-07Merge tag 'tty-5.8-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty Pull tty/serial driver updates from Greg KH: "Here is the tty and serial driver updates for 5.8-rc1 Nothing huge at all, just a lot of little serial driver fixes, updates for new devices and features, and other small things. Full details are in the shortlog. All of these have been in linux-next with no issues for a while" * tag 'tty-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (67 commits) tty: serial: qcom_geni_serial: Add 51.2MHz frequency support tty: serial: imx: clear Ageing Timer Interrupt in handler serial: 8250_fintek: Add F81966 Support sc16is7xx: Add flag to activate IrDA mode dt-bindings: sc16is7xx: Add flag to activate IrDA mode serial: 8250: Support rs485 bus termination GPIO serial: 8520_port: Fix function param documentation dt-bindings: serial: Add binding for rs485 bus termination GPIO vt: keyboard: avoid signed integer overflow in k_ascii serial: 8250: Enable 16550A variants by default on non-x86 tty: hvc_console, fix crashes on parallel open/close serial: imx: Initialize lock for non-registered console sc16is7xx: Read the LSR register for basic device presence check sc16is7xx: Allow sharing the IRQ line sc16is7xx: Use threaded IRQ sc16is7xx: Always use falling edge IRQ tty: n_gsm: Fix bogus i++ in gsm_data_kick tty: n_gsm: Remove unnecessary test in gsm_print_packet() serial: stm32: add no_console_suspend support tty: serial: fsl_lpuart: Use __maybe_unused instead of #if CONFIG_PM_SLEEP ...
2020-06-07Merge tag 'usb-5.8-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB/PHY driver updates from Greg KH: "Here are the large set of USB and PHY driver updates for 5.8-rc1. Nothing huge, just lots of little things: - USB gadget fixes and additions all over the place - new PHY drivers - PHY driver fixes and updates - XHCI driver updates - musb driver updates - more USB-serial driver ids added - various USB quirks added - thunderbolt minor updates and fixes - typec updates and additions All of these have been in linux-next for a while with no reported issues" * tag 'usb-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (245 commits) usb: dwc3: meson-g12a: fix USB2 PHY initialization on G12A and A1 SoCs usb: dwc3: meson-g12a: fix error path when fetching the reset line fails Revert "dt-bindings: usb: qcom,dwc3: Convert USB DWC3 bindings" Revert "dt-bindings: usb: qcom,dwc3: Add compatible for SC7180" Revert "dt-bindings: usb: qcom,dwc3: Introduce interconnect properties for Qualcomm DWC3 driver" USB: serial: ch341: fix lockup of devices with limited prescaler USB: serial: ch341: add basis for quirk detection CDC-ACM: heed quirk also in error handling USB: serial: option: add Telit LE910C1-EUX compositions usb: musb: Fix runtime PM imbalance on error usb: musb: jz4740: Prevent lockup when CONFIG_SMP is set usb: musb: mediatek: add reset FADDR to zero in reset interrupt handle usb: musb: use true for 'use_dma' usb: musb: start session in resume for host port usb: musb: return -ESHUTDOWN in urb when three-strikes error happened USB: serial: qcserial: add DW5816e QDL support thunderbolt: Add trivial .shutdown usb: dwc3: keystone: Turn on USB3 PHY before controller dt-bindings: usb: ti,keystone-dwc3.yaml: Add USB3.0 PHY property dt-bindings: usb: convert keystone-usb.txt to YAML ...
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-19 12:05:11 +0000