1. 25 Dec, 2018 14 commits
    • Linus Torvalds's avatar
      Merge tag 'regmap-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap · b1669432
      Linus Torvalds authored
      Pull regmap updates from Mark Brown:
       "This has been a busy release for the regmap-irq code, there's several
        new features been added, including an API cleanup for how we specify
        types that affected one existing driver (gpio-max77620):
         - Support for hardware that flags rising and falling edges on
           separate status bits from Bartosz Golaszewski.
         - Support for explicitly clearing interrupts before unmasking from
           Bartosz Golaszewski.
         - Support for level triggered IRQs from Matti Vaittinen"
      * tag 'regmap-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
        regmap: irq: add an option to clear status registers on unmask
        regmap: regmap-irq/gpio-max77620: add level-irq support
        regmap: regmap-irq: Remove default irq type setting from core
        regmap: debugfs: convert to DEFINE_SHOW_ATTRIBUTE
        regmap: rbtree: convert to DEFINE_SHOW_ATTRIBUTE
        regmap: irq: handle HW using separate rising/falling edge interrupts
        regmap: add a new macro:REGMAP_IRQ_REG_LINE(_id, _reg_bits)
    • Linus Torvalds's avatar
      Merge tag 'spi-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi · 0051db82
      Linus Torvalds authored
      Pull spi updates from Mark Brown:
       "The main thing this release has been a lot of work on the integration
        with SPI NOR flashes, there's been some specific support for a while
        for controller features designed to make them perform better but it's
        not worked out as well as hoped so the interface has been redesigned
        in a way that will hopefully do better - it's already been adopted by
        a number of additional controllers so things are looking good.
        Otherwise most of the work has been driver specific:
         - Support for better integration with NOR flashes from Boris
           Brezillon and Yogesh Narayan Gaur plus usage of it in several
         - A big cleanup of the Rockchip driver from Emil Renner Berthing.
         - Lots of performance improvements for bcm2835 from Lukas Wunner.
         - Slave mode support for pxa2xx from Lubomir Rintel.
         - Support for Macronix MXIC, Mediatek MT7629 and MT8183, NPCM PSPI,
           and Renesas r8a77470"
      * tag 'spi-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (90 commits)
        spi: sh-msiof: Reduce the number of times write to and perform the transmission from FIFO
        spi: sh-msiof: Add r8a774c0 support
        doc: lpspi: Document DT bindings for LPSPI slave mode
        spi: lpspi: Let watermark change with send data length
        spi: lpspi: Add slave mode support
        spi: lpspi: Replace all "master" with "controller"
        spi: imx: drop useless member speed_hz from driver data struct
        spi: imx: rename config callback and add useful parameters
        spi: imx: style fixes
        spi: imx: mx51-ecspi: Move some initialisation to prepare_message hook.
        spi: imx: add a device specific prepare_message callback
        mtd: atmel-quadspi: disallow building on ebsa110
        spi: Update NPCM PSPI controller documentation
        spi: npcm: Modify pspi send function
        spi: Use of_node_name_eq for node name comparisons
        spi: dw-mmio: add ACPI support
        spi: bcm2835: Synchronize with callback on DMA termination
        spi: bcm2835: Speed up FIFO access if fill level is known
        spi: bcm2835: Polish transfer of DMA prologue
        spi: spi-mem: add support for octal mode I/O data transfer
    • Linus Torvalds's avatar
      Merge tag 'regulator-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator · 79f20778
      Linus Torvalds authored
      Pull regulator updates from Mark Brown:
       "This has been a very busy release for the core, some fixes, one large
        new feature and a big bit of refactoring to update the GPIO API:
         - Support for coupled regulators from Dmitry Osipenko based on a
           prior attempt by Maciej Purski, allowing us to handle situations
           where the voltages on two regulators can't be too far apart from
           each other.
         - Conversion of the GPIO support in both drivers and the core to use
           GPIO descriptors rather than numbers, part of the overall project
           to remove GPIO numbers.
         - Support for standby mode suspend states from Andrei Stefanescu.
         - New drivers for Allwinner AXP209, Cirrus Logic Lochnagar and
           Microchip MPC16502"
      * tag 'regulator-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (90 commits)
        regulator: tps65910: fix a missing check of return value
        regulator: mcp16502: Select REGMAP_I2C to fix build error
        regulator: convert to DEFINE_SHOW_ATTRIBUTE
        regulator: mcp16502: Fix missing n_voltages setting
        regulator: mcp16502: Use #ifdef CONFIG_PM_SLEEP around mcp16502_suspend/resume_noirq
        regulator: mcp16502: code cleanup
        regulator: act8945a-regulator: make symbol act8945a_pm static
        drivers/regulator: fix a missing check of return value
        regulator: act8945a-regulator: fix 'defined but not used' compiler warning
        regulator: axp20x: fix set_ramp_delay for AXP209/dcdc2
        regulator: mcp16502: add support for suspend
        mfd: axp20x: use explicit bit defines
        mfd: axp20x: Clean up included headers
        regulator: dts: enable soft-start and ramp delay for the OLinuXino Lime2
        dt-bindings: mfd: axp20x: Add software based soft_start for AXP209 LDO3
        regulator: axp20x: add software based soft_start for AXP209 LDO3
        dt-bindings: mfd: axp20x: add support for regulator-ramp-delay for AXP209
        regulator: axp20x: add support for set_ramp_delay for AXP209
        mfd: axp20x: name voltage ramping define properly
        regulator: mcp16502: add regulator driver for MCP16502
    • Linus Torvalds's avatar
      Merge tag 'pwm/for-4.21-rc1' of... · d923fd6d
      Linus Torvalds authored
      Merge tag 'pwm/for-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
      Pull pwm updates from Thierry Reding:
       "Not a lot going on this cycle.
        There's some more cleanup going on and new driver support that was not
        quite ready in time for v4.21-rc1, but here are a few fixes and
        improvements that are good to go.
        The Kona PWM driver can now be built on the Cygnus architecture and
        the i.MX driver gained support for hardware readback. Some small fixes
        are provided for the clks711x and lpc18xx-sct drivers.
        Finally, to round things off some drivers are switched to SPDX license
      * tag 'pwm/for-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
        dt-bindings: pwm: rcar: Add r8a774c0 support
        pwm: imx: Add ipg clock operation
        pwm: clps711x: Switch to SPDX identifier
        pwm: clps711x: Fix period calculation
        pwm: bcm2835: Switch to SPDX identifier
        pwm: Enable Kona PWM to be built for the Cygnus architecture
        pwm: Drop legacy wrapper for changing polarity
        pwm: imx: Implement get_state() function for hardware readout
        pwm: imx: Use bitops and bitfield macros to define register values
        pwm: imx: Sort include files
        pwm: lpc18xx-sct: Don't reconfigure PWM in .request and .free
    • Linus Torvalds's avatar
      Merge tag 'acpi-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · e6d13150
      Linus Torvalds authored
      Pull ACPI updates from Rafael Wysocki:
       "These update the ACPICA code in the kernel to the 20181213 upstream
        revision, make it possible to build the ACPI subsystem without PCI
        support, and a new OEM _OSI string, add a new device support to the
        ACPI driver for AMD SoCs and fix PM handling in the ACPI driver for
        Intel SoCs, fix the SPCR table handling and do some assorted fixes and
         - Update the ACPICA code in the kernel to the 20181213 upstream
           revision including:
            * New Windows _OSI strings (Bob Moore, Jung-uk Kim).
            * Buffers-to-string conversions update (Bob Moore).
            * Removal of support for expressions in package elements (Bob
            * New option to display method/object evaluation in debug output
              (Bob Moore).
            * Compiler improvements (Bob Moore, Erik Schmauss).
            * Minor debugger fix (Erik Schmauss).
            * Disassembler improvement (Erik Schmauss).
            * Assorted cleanups (Bob Moore, Colin Ian King, Erik Schmauss).
         - Add support for a new OEM _OSI string to indicate special handling
           of secondary graphics adapters on some systems (Alex Hung).
         - Make it possible to build the ACPI subystem without PCI support
           (Sinan Kaya).
         - Make the SPCR table handling regard baud rate 0 in accordance with
           the specification of it and make the DSDT override code support
           DSDT code names generated by recent ACPICA (Andy Shevchenko, Wang
           Dongsheng, Nathan Chancellor).
         - Add clock frequency for Hisilicon Hip08 SPI controller to the ACPI
           driver for AMD SoCs (APD) (Jay Fang).
         - Fix the PM handling during device init in the ACPI driver for Intel
           SoCs (LPSS) (Hans de Goede).
         - Avoid double panic()s by clearing the APEI GHES block_status before
           panic() (Lenny Szubowicz).
         - Clean up a function invocation in the ACPI core and get rid of some
           code duplication by using the DEFINE_SHOW_ATTRIBUTE macro in the
           APEI support code (Alexey Dobriyan, Yangtao Li)"
      * tag 'acpi-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (31 commits)
        ACPI / tables: Add an ifdef around amlcode and dsdt_amlcode
        ACPI/APEI: Clear GHES block_status before panic()
        ACPI: Make PCI slot detection driver depend on PCI
        ACPI/IORT: Stub out ACS functions when CONFIG_PCI is not set
        arm64: select ACPI PCI code only when both features are enabled
        PCI/ACPI: Allow ACPI to be built without CONFIG_PCI set
        ACPICA: Remove PCI bits from ACPICA when CONFIG_PCI is unset
        ACPI: Allow CONFIG_PCI to be unset for reboot
        ACPI: Move PCI reset to a separate function
        ACPI / OSI: Add OEM _OSI string to enable dGPU direct output
        ACPI / tables: add DSDT AmlCode new declaration name support
        ACPICA: Update version to 20181213
        ACPICA: change coding style to match ACPICA, no functional change
        ACPICA: Debug output: Add option to display method/object evaluation
        ACPICA: disassembler: disassemble OEMx tables as AML
        ACPICA: Add "Windows 2018.2" string in the _OSI support
        ACPICA: Expressions in package elements are not supported
        ACPICA: Update buffer-to-string conversions
        ACPICA: add comments, no functional change
        ACPICA: Remove defines that use deprecated flag
    • Linus Torvalds's avatar
      Merge tag 'pm-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm · 1e2af254
      Linus Torvalds authored
      Pull power management updates from Rafael Wysocki:
       "These add sysadmin documentation for cpuidle, extend the cpuidle
        subsystem somewhat, improve the handling of performance states in the
        generic power domains (genpd) and operating performance points (OPP)
        frameworks, add a new cpufreq driver for Qualcomm SoCs, update some
        other cpufreq drivers, switch over the runtime PM framework to using
        high-res timers for device autosuspend, fix a problem with
        suspend-to-idle on ACPI-based platforms, add system-wide suspend and
        resume handling to the devfreq framework, do some janitorial cleanups
        all over and update some utilities.
         - Add sysadmin documentation for cpuidle (Rafael Wysocki).
         - Make it possible to specify a cpuidle governor from kernel command
           line, add new cpuidle state sysfs attributes for governor
           evaluation, and improve the "polling" idle state handling (Rafael
         - Fix the handling of the "required-opps" DT property in the
           operating performance points (OPP) framework, improve the
           integration of it with the generic power domains (genpd) framework,
           improve the handling of performance states in them and clean up the
           idle states vs performance states separation in genpd (Viresh
           Kumar, Ulf Hansson).
         - Add a cpufreq driver called "qcom-hw" for Qualcomm SoCs using a
           hardware engine to control CPU frequency transitions along with DT
           bindings for it (Taniya Das).
         - Fix an intel_pstate driver issue related to CPU offline and update
           the documentation of it (Srinivas Pandruvada).
         - Clean up the imx6q cpufreq driver (Anson Huang).
         - Add SPDX license IDs to cpufreq schedutil governor files (Daniel
         - Switch over the runtime PM framework to using high-res timers for
           device autosuspend to allow the control of it to be more precise
           (Vincent Guittot).
         - Disable non-wakeup ACPI GPEs during suspend-to-idle so that they
           don't prevent the system from reaching the target low-power state
           and simplify the suspend-to-idle handling on ACPI platforms without
           full Low-Power S0 Idle (LPS0) support (Rafael Wysocki).
         - Add system-wide suspend and resume support to the devfreq framework
           (Lukasz Luba).
         - Clean up the SmartReflex adaptive voltage scaling (AVS) driver and
           add an SPDX license ID to it (Nishanth Menon, Uwe Kleine-König,
           Thomas Meyer).
         - Get rid of code duplication by using the DEFINE_SHOW_ATTRIBUTE
           macro in some places, fix some DT node refcount leaks, and do some
           other janitorial cleanups (Yangtao Li).
         - Update the cpupower, intel_pstate_tracer and turbosat utilities
           (Abhishek Goel, Doug Smythies, Len Brown)"
      * tag 'pm-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (54 commits)
        PM / Domains: remove define_genpd_open_function() and define_genpd_debugfs_fops()
        PM-runtime: Switch autosuspend over to using hrtimers
        cpufreq: qcom-hw: Add support for QCOM cpufreq HW driver
        dt-bindings: cpufreq: Introduce QCOM cpufreq firmware bindings
        ACPI: PM: Loop in full LPS0 mode only
        ACPI: EC / PM: Disable non-wakeup GPEs for suspend-to-idle
        tools/power/x86/intel_pstate_tracer: Fix non root execution for post processing a trace file
        tools/power turbostat: consolidate duplicate model numbers
        tools/power turbostat: fix goldmont C-state limit decoding
        PM / Domains: Propagate performance state updates
        PM / Domains: Factorize dev_pm_genpd_set_performance_state()
        PM / Domains: Save OPP table pointer in genpd
        OPP: Don't return 0 on error from of_get_required_opp_performance_state()
        OPP: Add dev_pm_opp_xlate_performance_state() helper
        OPP: Improve _find_table_of_opp_np()
        PM / Domains: Make genpd performance states orthogonal to the idlestates
        PM / sleep: convert to DEFINE_SHOW_ATTRIBUTE
        cpuidle: Add 'above' and 'below' idle state metrics
        PM / AVS: SmartReflex: Switch to SPDX Licence ID
        PM / AVS: SmartReflex: NULL check before some freeing functions is not needed
    • Linus Torvalds's avatar
      Merge tag 'edac_for_4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp · b271b212
      Linus Torvalds authored
      Pull EDAC updates from Borislav Petkov:
       - Support for ZynqMP DDR controller support to synopsys_edac along with
         a driver cleanup and generalization for the addition of support for
         the new IP. (Manish Narani)
       - Removal of the /sys/bus/edac devices hierarchy. This enabled us to
         get rid of the silly memory controllers maximum number notion. (Tony
         Luck and Borislav Petkov)
       - skx_edac improvements and fixes. (Qiuxu Zhuo and Tony Luck)
       - The usual garden variety of small cleanups and fixes.
      * tag 'edac_for_4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp: (25 commits)
        EDAC, fsl_ddr: Add LS1021A to the list of supported hardware
        EDAC, i5000: Remove set but not used local variables
        MAINTAINERS, EDAC: Drop bouncing email
        EDAC, i82975x: Fix spelling mistake "reserverd" -> "reserved"
        EDAC, fsl: Move error injection under CONFIG_EDAC_DEBUG
        EDAC, skx: Let EDAC core show the decoded result for debugfs
        EDAC, skx: Move debugfs node under EDAC's hierarchy
        EDAC, skx: Prepend hex formatting with '0x'
        EDAC, skx: Fix function calling order in skx_exit()
        EDAC: Drop per-memory controller buses
        EDAC: Don't add devices under /sys/bus/edac
        EDAC: Fix indentation issues in several EDAC drivers
        EDAC, skx: Fix randconfig builds in a better way
        EDAC, i82975x: Remove set but not used variable dtype
        EDAC, qcom_edac: Remove irq_handled local variable
        EDAC, synopsys: Add Error Injection support for ZynqMP DDR controller
        EDAC, synopsys: Add ECC support for ZynqMP DDR controller
        EDAC, synopsys: Add macro defines for ZynqMP DDRC
        dt: bindings: Document ZynqMP DDRC in Synopsys documentation
        EDAC, synopsys: Add error handling for the of_device_get_match_data() result
    • Linus Torvalds's avatar
      Merge tag 'sound-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound · 8e61e7b5
      Linus Torvalds authored
      Pull sound updates from Takashi Iwai:
       "There are no intensive changes in both ALSA and ASoC core parts while
        rather most of changes are a bunch of driver fixes and updates. A
        large diff pattern appears in ASoC TI part which now merges both OMAP
        and DaVinci stuff, but the rest spreads allover the places.
        Note that this pull request includes also some updates for LED trigger
        and platform drivers for mute LEDs, appearing in the diffstat as well.
        Some highlights:
         - Preparatory work for merging the audio-graph and audio-graph-scu
         - A merge of TI OMAP and DaVinci directories, as both product lines
           get merged together. Also including a few architecture changes as
         - Major cleanups of the Maxim MAX9867 driver
         - Small fixes for tablets & co with Intel BYT/CHT chips
         - Lots of rsnd updates as usual
         - Support for Asahi Kaesi AKM4118, AMD ACP3x, Intel platforms with
           RT5660, Meson AXG S/PDIF inputs, several Qualcomm IPs and Xilinx
           I2S controllers
         - Introduce audio-mute LED trigger for replacing the former hackish
           dynamic binding
         - Huawei WMI hotkey and mute LED support
         - Refactoring of PM code and display power controls
         - Headset button support in the generic jack code
         - A few updates for Tegra
         - Fixups for HP EliteBook and ASUS UX391UA
         - Lots of updates for Intel ASoC HD-audio, including the improved DSP
           detection and the fallback binding from ASoC SST to legacy HD-audio
           controller drivers
         - Updates for FireWire TASCAM and Fireface devices, some other fixes
         - A few potential Spectre v1 fixes that are all trivial"
      * tag 'sound-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (280 commits)
        ALSA: HD-Audio: SKL+: force HDaudio legacy or SKL+ driver selection
        ALSA: HD-Audio: SKL+: abort probe if DSP is present and Skylake driver selected
        ALSA: HDA: export process_unsol_events()
        ALSA: hda/realtek: Enable audio jacks of ASUS UX391UA with ALC294
        ALSA: bebob: fix model-id of unit for Apogee Ensemble
        ALSA: emu10k1: Fix potential Spectre v1 vulnerabilities
        ALSA: rme9652: Fix potential Spectre v1 vulnerability
        ASoC: ti: Kconfig: Remove the deprecated options
        ARM: davinci_all_defconfig: Update the audio options
        ARM: omap1_defconfig: Do not select ASoC by default
        ARM: omap2plus_defconfig: Update the audio options
        ARM: davinci: dm365-evm: Update for the new ASoC Kcofnig options
        ARM: OMAP2: Update for new MCBSP Kconfig option
        ARM: OMAP1: Makefile: Update for new MCBSP Kconfig option
        MAINTAINERS: Add entry for sound/soc/ti and update the OMAP audio support
        ASoC: ti: Merge davinci and omap directories
        ALSA: hda: add mute LED support for HP EliteBook 840 G4
        ALSA: fireface: code refactoring to handle model-specific registers
        ALSA: fireface: add support for packet streaming on Fireface 800
        ALSA: fireface: allocate isochronous resources in mode-specific implementation
    • Linus Torvalds's avatar
      Merge tag 'media/v4.20-7' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media · 996680d4
      Linus Torvalds authored
      Pull more media updates from Mauro Carvalho Chehab:
       "The Intel IPU3 camera driver"
      * tag 'media/v4.20-7' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (23 commits)
        media: staging/ipu3-imgu: Add MAINTAINERS entry
        media: staging/ipu3-imgu: Address documentation comments
        media: v4l: Add Intel IPU3 meta buffer formats
        media: doc-rst: Add Intel IPU3 documentation
        media: ipu3-imgu: Fix firmware binary location
        media: ipu3-imgu: Fix compiler warnings
        media: staging/intel-ipu3: Add dual pipe support
        media: staging/intel-ipu3: Add Intel IPU3 meta data uAPI
        media: staging/intel-ipu3: Add imgu top level pci device driver
        media: staging/intel-ipu3: Add v4l2 driver based on media framework
        media: staging/intel-ipu3: Add css pipeline programming
        media: staging/intel-ipu3: css: Initialize css hardware
        media: staging/intel-ipu3: css: Compute and program ccs
        media: staging/intel-ipu3: css: Add static settings for image pipeline
        media: staging/intel-ipu3: css: Add support for firmware management
        media: staging/intel-ipu3: css: Add dma buff pool utility functions
        media: staging/intel-ipu3: Implement DMA mapping functions
        media: staging/intel-ipu3: mmu: Implement driver
        media: staging/intel-ipu3: abi: Add structs
        media: staging/intel-ipu3: abi: Add register definitions and enum
    • Linus Torvalds's avatar
      Merge tag 'media/v4.20-6' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media · 5813540b
      Linus Torvalds authored
      Pull media updates from Mauro Carvalho Chehab:
       "First set of media patches contains:
         - Three new platform drivers: aspeed-video seco-sed and sun5i-csi;
         - One new sensor driver: imx214;
         - Support for Xbox DVD Movie Playback kit remote controller;
         - Removal of the legacy friio driver. The functionalities were ported
           to another driver, already merged;
         - New staging driver: Rockchip VPU;
         - Added license text or SPDX tags to all media documentation files;
         - Usual set of cleanup, fixes and enhancements"
      * tag 'media/v4.20-6' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (263 commits)
        media: cx23885: only reset DMA on problematic CPUs
        media: ddbridge: Move asm includes after linux ones
        media: drxk_hard: check if parameter is not NULL
        media: docs: fix some GPL licensing ambiguity at the text
        media: platform: Add Aspeed Video Engine driver
        media: dt-bindings: media: Add Aspeed Video Engine binding documentation
        media: vimc: fix start stream when link is disabled
        media: v4l2-device: Link subdevices to their parent devices if available
        media: siano: Use kmemdup instead of duplicating its function
        media: rockchip vpu: remove some unused vars
        media: cedrus: don't initialize pointers with zero
        media: cetrus: return an error if alloc fails
        media: cedrus: Add device-tree compatible and variant for A64 support
        media: cedrus: Add device-tree compatible and variant for H5 support
        media: dt-bindings: media: cedrus: Add compatibles for the A64 and H5
        media: video-i2c: check if chip struct has set_power function
        media: video-i2c: support runtime PM
        media: staging: media: imx: Use of_node_name_eq for node name comparisons
        media: v4l2-subdev: document controls need _FL_HAS_DEVNODE
        media: vivid: Improve timestamping
    • Linus Torvalds's avatar
      Merge tag 'mtd/for-4.21' of git://git.infradead.org/linux-mtd · eaa76499
      Linus Torvalds authored
      Pull mtd updates from Boris Brezillon:
       "SPI NOR Core changes:
         - Parse the 4BAIT SFDP section
         - Add a bunch of SPI NOR entries to the flash_info table
         - Add the concept of SFDP fixups and use it to fix a bug on MX25L25635F
         - A bunch of minor cleanups/comestic changes
        NAND core changes:
         - kernel-doc miscellaneous fixes.
         - Third batch of fixes/cleanup to the raw NAND core impacting various
           controller drivers (ams-delta, marvell, fsmc, denali, tegra,
            * Stop to pass mtd_info objects to internal functions
            * Reorganize code to avoid forward declarations
            * Drop useless test in nand_legacy_set_defaults()
            * Move nand_exec_op() to internal.h
            * Add nand_[de]select_target() helpers
            * Pass the CS line to be selected in struct nand_operation
            * Make ->select_chip() optional when ->exec_op() is implemented
            * Deprecate the ->select_chip() hook
            * Move the ->exec_op() method to nand_controller_ops
            * Move ->setup_data_interface() to nand_controller_ops
            * Deprecate the dummy_controller field
            * Fix JEDEC detection
            * Provide a helper for polling GPIO R/B pin
        Raw NAND chip drivers changes:
         - Macronix:
            * Flag 1.8V AC chips with a broken GET_FEATURES(TIMINGS)
        Raw NAND controllers drivers changes:
         - Ams-delta:
            * Fix the error path
            * SPDX tag added
            * May be compiled with COMPILE_TEST=y
            * Conversion to ->exec_op() interface
            * Drop .IOADDR_R/W use
            * Use GPIO API for data I/O
         - Denali:
            * Remove denali_reset_banks()
            * Remove ->dev_ready() hook
            * Include <linux/bits.h> instead of <linux/bitops.h>
            * Changes to comply with the above fixes/cleanup done in the core.
         - FSMC:
            * Add an SPDX tag to replace the license text
            * Make conversion from chip to fsmc consistent
            * Fix unchecked return value in fsmc_read_page_hwecc
            * Changes to comply with the above fixes/cleanup done in the core.
         - Marvell:
            * Prevent timeouts on a loaded machine (fix)
            * Changes to comply with the above fixes/cleanup done in the core.
         - OMAP2:
            * Pass the parent of pdev to dma_request_chan() (fix)
         - R852:
            * Use generic DMA API
         - sh_flctl:
            * Convert to SPDX identifiers
         - Sunxi:
            * Write pageprog related opcodes to the right register: WCMD_SET (fix)
         - Tegra:
            * Stop implementing ->select_chip()
         - VF610:
            * Add an SPDX tag to replace the license text
            * Changes to comply with the above fixes/cleanup done in the core.
         - Various trivial/spelling/coding style fixes.
        SPI-NAND drivers changes:
         - Remove the depreacated mt29f_spinand driver from staging.
         - Add support for:
            * Toshiba TC58CVG2S0H
            * GigaDevice GD5FxGQ4xA
            * Winbond W25N01GV
        JFFS2 changes:
         - Fix a lockdep issue
        MTD changes:
         - Rework the physmap driver to merge gpio-addr-flash and physmap_of
           in it
         - Add a new compatible for RedBoot partitions
         - Make sub-partitions RW if the parent partition was RO because of a
         - Add pinctrl support to the
         - Addition of /* fall-through */ comments where appropriate
         - Various minor fixes and cleanups
        Other changes:
         - Update my email address"
      * tag 'mtd/for-4.21' of git://git.infradead.org/linux-mtd: (108 commits)
        mtd: rawnand: sunxi: Write pageprog related opcodes to WCMD_SET
        MAINTAINERS: Update my email address
        mtd: rawnand: marvell: prevent timeouts on a loaded machine
        mtd: rawnand: omap2: Pass the parent of pdev to dma_request_chan()
        mtd: rawnand: Fix JEDEC detection
        mtd: spi-nor: Add support for is25lp016d
        mtd: spi-nor: parse SFDP 4-byte Address Instruction Table
        mtd: spi-nor: Add 4B_OPCODES flag to is25lp256
        mtd: spi-nor: Add an SPDX tag to spi-nor.{c,h}
        mtd: spi-nor: Make the enable argument passed to set_byte() a bool
        mtd: spi-nor: Stop passing flash_info around
        mtd: spi-nor: Avoid forward declaration of internal functions
        mtd: spi-nor: Drop inline on all internal helpers
        mtd: spi-nor: Add a post BFPT fixup for MX25L25635E
        mtd: spi-nor: Add a post BFPT parsing fixup hook
        mtd: spi-nor: Add the SNOR_F_4B_OPCODES flag
        mtd: spi-nor: cast to u64 to avoid uint overflows
        mtd: spi-nor: Add support for IS25LP032/064
        mtd: spi-nor: add entry for mt35xu512aba flash
        mtd: spi-nor: add macros related to MICRON flash
    • Linus Torvalds's avatar
      Merge tag 'i3c/for-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux · b3cc2bfe
      Linus Torvalds authored
      Pull initial i3c support from Boris Brezillon:
       "Add initial support for I3C along with two I3C master controller
      * tag 'i3c/for-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux:
        i3c: master: cdns: fix I2C transfers in Cadence I3C master driver
        ic3: off by one in mode_show()
        i3c: fix an error code in i3c_master_add_i3c_dev_locked()
        i3c: master: dw: fix mask operation by using the correct operator
        MAINTAINERS: Add myself as the dw-i3c-master module maintainer
        dt-binding: i3c: Document Synopsys DesignWare I3C
        i3c: master: Add driver for Synopsys DesignWare IP
        i3c: master: Remove set but not used variable 'old_i3c_scl_lim'
        dt-bindings: i3c: Document Cadence I3C master bindings
        i3c: master: Add driver for Cadence IP
        MAINTAINERS: Add myself as the I3C subsystem maintainer
        dt-bindings: i3c: Document core bindings
        i3c: Add sysfs ABI spec
        docs: driver-api: Add I3C documentation
        i3c: Add core I3C infrastructure
    • Linus Torvalds's avatar
      Merge tag 'drm-next-2018-12-14' of git://anongit.freedesktop.org/drm/drm · 4971f090
      Linus Torvalds authored
      Pull drm updates from Dave Airlie:
         - shared fencing staging removal
         - drop transactional atomic helpers and move helpers to new location
         - DP/MST atomic cleanup
         - Leasing cleanups and drop EXPORT_SYMBOL
         - Convert drivers to atomic helpers and generic fbdev.
         - removed deprecated obj_ref/unref in favour of get/put
         - Improve dumb callback documentation
         - MODESET_LOCK_BEGIN/END helpers
         - CDTech panels, Banana Pi Panel, DLC1010GIG,
         - Olimex LCD-O-LinuXino, Samsung S6D16D0, Truly NT35597 WQXGA,
         - Himax HX8357D, simulated RTSM AEMv8.
         - GPD Win2 panel
         - AUO G101EVN010
         - render node support
         - move global init out of drivers
         - fix LRU handling for ghost objects
         - Support for simultaneous submissions to multiple engines
         - timeout/fault handling changes to help GPU recovery
         - helpers for hw with preemption support
         - Scaler/Watermark fixes
         - DP MST + powerwell fixes
         - PSR fixes
         - Break long get/put shmemfs pages
         - Icelake fixes
         - Icelake DSI video mode enablement
         - Engine workaround improvements
         - freesync support
         - GPU reset enabled on CI, VI, SOC15 dGPUs
         - ABM support in DC
         - KFD support for vega12/polaris12
         - SDMA paging queue on vega
         - More amdkfd code sharing
         - DCC scanout on GFX9
         - DC kerneldoc
         - Updated SMU firmware for GFX8 chips
         - XGMI PSP + hive reset support
         - GPU reset
         - DC trace support
         - Powerplay updates for newer Polaris
         - Cursor plane update fast path
         - kfd dma-buf support
         - add EDID support
         - pageflip with damage support
         - Initial Turing TU104/TU106 modesetting support
         - a2xx gpu support for apq8060 and imx5
         - a2xx gpummu support
         - mdp4 display support for apq8060
         - DPU fixes and cleanups
         - enhanced profiling support
         - debug object naming interface
         - get_iova/page pinning decoupling
         - Tegra194 host1x, VIC and display support enabled
         - Audio over HDMI for Tegra186 and Tegra194
         - DMA/IOMMU refactoring
         - plane alpha + blend mode support
         - Color format fixes for mixer driver
         - R8A7744 and R8A77470 support
         - R8A77965 LVDS support
         - fbdev emulation fix
         - multi-tiled scalling fixes
         - SPDX identifiers
         - dw_hdmi support
         - dw-mipi-dsi + dual dsi support
         - mailbox read size fix
         - fix cursor pinning
         - YUV support (scaling + cursor)
         - enable TFU (Texture Formatting Unit)
         - add support for linear tiled formats
         - Display Engine 3 support
         - H6 DE3 mixer 0 support
         - H6 display engine support
         - dw-hdmi support
         - H6 HDMI phy support
         - implicit fence waiting
         - BGRX8888 support
         - Overlay plane support
         - implicit fence waiting
         - HDMI 1.4 4k modes
         - i2c fixes for sii902x"
      * tag 'drm-next-2018-12-14' of git://anongit.freedesktop.org/drm/drm: (1403 commits)
        drm/amd/display: Add fast path for cursor plane updates
        drm/amdgpu: Enable GPU recovery by default for CI
        drm/amd/display: Fix duplicating scaling/underscan connector state
        drm/amd/display: Fix unintialized max_bpc state values
        Revert "drm/amd/display: Set RMX_ASPECT as default"
        drm/amdgpu: Fix stub function name
        drm/msm/dpu: Fix clock issue after bind failure
        drm/msm/dpu: Clean up dpu_media_info.h static inline functions
        drm/msm/dpu: Further cleanups for static inline functions
        drm/msm/dpu: Cleanup the debugfs functions
        drm/msm/dpu: Remove dpu_irq and unused functions
        drm/msm: Make irq_postinstall optional
        drm/msm/dpu: Cleanup callers of dpu_hw_blk_init
        drm/msm/dpu: Remove unused functions
        drm/msm/dpu: Remove dpu_crtc_is_enabled()
        drm/msm/dpu: Remove dpu_crtc_get_mixer_height
        drm/msm/dpu: Remove dpu_dbg
        drm/msm: dpu: Remove crtc_lock
        drm/msm: dpu: Remove vblank_requested flag from dpu_crtc
        drm/msm: dpu: Separate crtc assignment from vblank enable
    • Linus Torvalds's avatar
      Merge tag 'platform-drivers-x86-v4.21-1' of git://git.infradead.org/linux-platform-drivers-x86 · c76cd634
      Linus Torvalds authored
      Pull x86 platform driver updates from Andy Shevchenko:
       - The USB Power Delivery discrete components now can be enumerated by
         i2c-multi-instantiate driver via several resources under single ACPI
         device node (ACPI ID is INT3515).
       - Touchscreen support is added for the Mediacom Flexbook Edge 11.
       - Mellanox driver got fixed due to updates in their firmware.
       - The power management stub driver for AtomISP v2 is fixed in order to
         support Intel Baytrail SoCs where same quirk is needed for S0ix to
       - Special key handling has been fixed for Favorites hotkey on Thinkpad,
         and Screen LOCK on ASUS.
       - Ideapad Yoga 2 13 has no HW rfkill switch, thus, driver has been
         updated to support this.
       - Few cleanups related to debugfs have been made in Intel IPS and Intel
         PMC drivers. Besides that Intel PMC has been extended to show more
         detailed information about Latency Tolerance
      * tag 'platform-drivers-x86-v4.21-1' of git://git.infradead.org/linux-platform-drivers-x86: (41 commits)
        platform/x86: mlx-platform: Convert to use SPDX identifier
        Documentation/ABI: Add new attribute for mlxreg-io sysfs interfaces
        platform/x86: mlx-platform: Allow mlxreg-io driver activation for new systems
        platform/x86: mlx-platform: Fix LED configuration
        platform/x86: mlx-platform: Fix tachometer registers
        platform/x86: mlx-platform: Rename new systems product names
        platform/x86: mlx-platform: Add definitions for new registers
        platform/x86: intel_telemetry: convert to DEFINE_SHOW_ATTRIBUTE
        platform/x86: intel_pmc_core: convert to DEFINE_SHOW_ATTRIBUTE
        platform/x86: thinkpad_acpi: Cleanup quirks macros
        platform/x86: touchscreen_dmi: Add info for the Mediacom Flexbook Edge 11
        platform/x86: Fix config space access for intel_atomisp2_pm
        platform/x86: Add the VLV ISP PCI ID to atomisp2_pm
        platform/x86: intel_ips: Convert to use DEFINE_SHOW_ATTRIBUTE macro
        platform/x86: intel_ips: Remove never happen condition
        platform/x86: intel_ips: NULL check before some freeing functions is not needed
        platform/x86: intel_ips: remove unnecessary checks in ips_debugfs_init
        iio: inv_mpu6050: Use i2c_acpi_get_i2c_resource() helper
        ACPI / scan: Create platform device for INT3515 ACPI nodes
        platform/x86: i2c-multi-instantiate: Allow to have same slaves
  2. 24 Dec, 2018 6 commits
  3. 23 Dec, 2018 2 commits
  4. 22 Dec, 2018 5 commits
    • Linus Torvalds's avatar
      Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · 9105b8aa
      Linus Torvalds authored
      Pull SCSI fixes from James Bottomley:
       "This is two simple target fixes and one discard related I/O starvation
        problem in sd.
        The discard problem occurs because the discard page doesn't have a
        mempool backing so if the allocation fails due to memory pressure, we
        then lose the forward progress we require if the writeout is on the
        same device. The fix is to back it with a mempool"
      * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
        scsi: sd: use mempool for discard special page
        scsi: target: iscsi: cxgbit: add missing spin_lock_init()
        scsi: target: iscsi: cxgbit: fix csk leak
    • Linus Torvalds's avatar
      Merge tag 'compiler-attributes-for-linus-v4.20' of https://github.com/ojeda/linux · 1104bd96
      Linus Torvalds authored
      Pull compiler_types.h fix from Miguel Ojeda:
       "A cleanup for userspace in compiler_types.h: don't pollute userspace
        with macro definitions (Xiaozhou Liu)
        This is harmless for the kernel, but v4.19 was released with a few
        macros exposed to userspace as the patch explains; which this removes,
        so it *could* happen that we break something for someone (although
        leaving inline redefined is probably worse)"
      * tag 'compiler-attributes-for-linus-v4.20' of https://github.com/ojeda/linux:
        include/linux/compiler_types.h: don't pollute userspace with macro definitions
    • Linus Torvalds's avatar
      Merge tag 'auxdisplay-for-linus-v4.20' of https://github.com/ojeda/linux · 38c0ecf6
      Linus Torvalds authored
      Pull auxdisplay fix from Miguel Ojeda:
       "charlcd: fix x/y command parsing (Mans Rullgard)"
      * tag 'auxdisplay-for-linus-v4.20' of https://github.com/ojeda/linux:
        auxdisplay: charlcd: fix x/y command parsing
    • Christian Brauner's avatar
      Revert "vfs: Allow userns root to call mknod on owned filesystems." · 94f82008
      Christian Brauner authored
      This reverts commit 55956b59.
      commit 55956b59 ("vfs: Allow userns root to call mknod on owned filesystems.")
      enabled mknod() in user namespaces for userns root if CAP_MKNOD is
      available. However, these device nodes are useless since any filesystem
      mounted from a non-initial user namespace will set the SB_I_NODEV flag on
      the filesystem. Now, when a device node s created in a non-initial user
      namespace a call to open() on said device node will fail due to:
      bool may_open_dev(const struct path *path)
              return !(path->mnt->mnt_flags & MNT_NODEV) &&
                      !(path->mnt->mnt_sb->s_iflags & SB_I_NODEV);
      The problem with this is that as of the aforementioned commit mknod()
      creates partially functional device nodes in non-initial user namespaces.
      In particular, it has the consequence that as of the aforementioned commit
      open() will be more privileged with respect to device nodes than mknod().
      Before it was the other way around. Specifically, if mknod() succeeded
      then it was transparent for any userspace application that a fatal error
      must have occured when open() failed.
      All of this breaks multiple userspace workloads and a widespread assumption
      about how to handle mknod(). Basically, all container runtimes and systemd
      live by the slogan "ask for forgiveness not permission" when running user
      namespace workloads. For mknod() the assumption is that if the syscall
      succeeds the device nodes are useable irrespective of whether it succeeds
      in a non-initial user namespace or not. This logic was chosen explicitly
      to allow for the glorious day when mknod() will actually be able to create
      fully functional device nodes in user namespaces.
      A specific problem people are already running into when running 4.18 rc
      kernels are failing systemd services. For any distro that is run in a
      container systemd services started with the PrivateDevices= property set
      will fail to start since the device nodes in question cannot be
      opened (cf. the arguments in [1]).
      Full disclosure, Seth made the very sound argument that it is already
      possible to end up with partially functional device nodes. Any filesystem
      mounted with MS_NODEV set will allow mknod() to succeed but will not allow
      open() to succeed. The difference to the case here is that the MS_NODEV
      case is transparent to userspace since it is an explicitly set mount option
      while the SB_I_NODEV case is an implicit property enforced by the kernel
      and hence opaque to userspace.
      [1]: https://github.com/systemd/systemd/pull/9483
      Signed-off-by: default avatarChristian Brauner <christian@brauner.io>
      Cc: "Eric W. Biederman" <ebiederm@xmission.com>
      Cc: Seth Forshee <seth.forshee@canonical.com>
      Cc: Serge Hallyn <serge@hallyn.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Christoph Hellwig's avatar
      dma-mapping: fix flags in dma_alloc_wc · 0cd60eb1
      Christoph Hellwig authored
      We really need the writecombine flag in dma_alloc_wc, fix a stupid
      Fixes: 7ed1d91a
       ("dma-mapping: translate __GFP_NOFAIL to DMA_ATTR_NO_WARN")
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
  5. 21 Dec, 2018 13 commits
    • Linus Torvalds's avatar
      Merge branch 'akpm' (patches from Andrew) · 23203e3f
      Linus Torvalds authored
      Merge misc fixes from Andrew Morton:
       "4 fixes"
      * emailed patches from Andrew Morton <akpm@linux-foundation.org>:
        mm, page_alloc: fix has_unmovable_pages for HugePages
        fork,memcg: fix crash in free_thread_stack on memcg charge fail
        mm: thp: fix flags for pmd migration when split
        mm, memory_hotplug: initialize struct pages for the full memory section
    • Oscar Salvador's avatar
      mm, page_alloc: fix has_unmovable_pages for HugePages · 17e2e7d7
      Oscar Salvador authored
      While playing with gigantic hugepages and memory_hotplug, I triggered
      the following #PF when "cat memoryX/removable":
        BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
        #PF error: [normal kernel read fault]
        PGD 0 P4D 0
        Oops: 0000 [#1] SMP PTI
        CPU: 1 PID: 1481 Comm: cat Tainted: G            E     4.20.0-rc6-mm1-1-default+ #18
        Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.0.0-prebuilt.qemu-project.org 04/01/2014
        RIP: 0010:has_unmovable_pages+0x154/0x210
        Call Trace:
      The reason is we do not pass the Head to page_hstate(), and so, the call
      to compound_order() in page_hstate() returns 0, so we end up checking
      all hstates's size to match PAGE_SIZE.
      Obviously, we do not find any hstate matching that size, and we return
      NULL.  Then, we dereference that NULL pointer in
      hugepage_migration_supported() and we got the #PF from above.
      Fix that by getting the head page before calling page_hstate().
      Also, since gigantic pages span several pageblocks, re-adjust the logic
      for skipping pages.  While are it, we can also get rid of the
      [osalvador@suse.de: remove round_up(), adjust skip pages logic per Michal]
        Link: http://lkml.kernel.org/r/20181221062809.31771-1-osalvador@suse.de
      Link: http://lkml.kernel.org/r/20181217225113.17864-1-osalvador@suse.de
      Signed-off-by: default avatarOscar Salvador <osalvador@suse.de>
      Acked-by: default avatarMichal Hocko <mhocko@suse.com>
      Reviewed-by: default avatarDavid Hildenbrand <david@redhat.com>
      Cc: Vlastimil Babka <vbabka@suse.cz>
      Cc: Pavel Tatashin <pavel.tatashin@microsoft.com>
      Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Rik van Riel's avatar
      fork,memcg: fix crash in free_thread_stack on memcg charge fail · 5eed6f1d
      Rik van Riel authored
      Commit 9b6f7e16 ("mm: rework memcg kernel stack accounting") will
      result in fork failing if allocating a kernel stack for a task in
      dup_task_struct exceeds the kernel memory allowance for that cgroup.
      Unfortunately, it also results in a crash.
      This is due to the code jumping to free_stack and calling
      free_thread_stack when the memcg kernel stack charge fails, but without
      tsk->stack pointing at the freshly allocated stack.
      This in turn results in the vfree_atomic in free_thread_stack oopsing
      with a backtrace like this:
      #5 [ffffc900244efc88] die at ffffffff8101f0ab
       #6 [ffffc900244efcb8] do_general_protection at ffffffff8101cb86
       #7 [ffffc900244efce0] general_protection at ffffffff818ff082
          [exception RIP: llist_add_batch+7]
          RIP: ffffffff8150d487  RSP: ffffc900244efd98  RFLAGS: 00010282
          RAX: 0000000000000000  RBX: ffff88085ef55980  RCX: 0000000000000000
          RDX: ffff88085ef55980  RSI: 343834343531203a  RDI: 343834343531203a
          RBP: ffffc900244efd98   R8: 0000000000000001   R9: ffff8808578c3600
          R10: 0000000000000000  R11: 0000000000000001  R12: ffff88029f6c21c0
          R13: 0000000000000286  R14: ffff880147759b00  R15: 0000000000000000
          ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
       #8 [ffffc900244efda0] vfree_atomic at ffffffff811df2c7
       #9 [ffffc900244efdb8] copy_process at ffffffff81086e37
      #10 [ffffc900244efe98] _do_fork at ffffffff810884e0
      #11 [ffffc900244eff10] sys_vfork at ffffffff810887ff
      #12 [ffffc900244eff20] do_syscall_64 at ffffffff81002a43
          RIP: 000000000049b948  RSP: 00007ffcdb307830  RFLAGS: 00000246
          RAX: ffffffffffffffda  RBX: 0000000000896030  RCX: 000000000049b948
          RDX: 0000000000000000  RSI: 00007ffcdb307790  RDI: 00000000005d7421
          RBP: 000000000067370f   R8: 00007ffcdb3077b0   R9: 000000000001ed00
          R10: 0000000000000008  R11: 0000000000000246  R12: 0000000000000040
          R13: 000000000000000f  R14: 0000000000000000  R15: 000000000088d018
          ORIG_RAX: 000000000000003a  CS: 0033  SS: 002b
      The simplest fix is to assign tsk->stack right where it is allocated.
      Link: http://lkml.kernel.org/r/20181214231726.7ee4843c@imladris.surriel.com
      Fixes: 9b6f7e16
       ("mm: rework memcg kernel stack accounting")
      Signed-off-by: default avatarRik van Riel <riel@surriel.com>
      Acked-by: default avatarRoman Gushchin <guro@fb.com>
      Acked-by: default avatarMichal Hocko <mhocko@suse.com>
      Cc: Shakeel Butt <shakeelb@google.com>
      Cc: Johannes Weiner <hannes@cmpxchg.org>
      Cc: Tejun Heo <tj@kernel.org>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Peter Xu's avatar
      mm: thp: fix flags for pmd migration when split · 2e83ee1d
      Peter Xu authored
      When splitting a huge migrating PMD, we'll transfer all the existing PMD
      bits and apply them again onto the small PTEs.  However we are fetching
      the bits unconditionally via pmd_soft_dirty(), pmd_write() or
      pmd_yound() while actually they don't make sense at all when it's a
      migration entry.  Fix them up.  Since at it, drop the ifdef together as
      not needed.
      Note that if my understanding is correct about the problem then if
      without the patch there is chance to lose some of the dirty bits in the
      migrating pmd pages (on x86_64 we're fetching bit 11 which is part of
      swap offset instead of bit 2) and it could potentially corrupt the
      memory of an userspace program which depends on the dirty bit.
      Link: http://lkml.kernel.org/r/20181213051510.20306-1-peterx@redhat.com
      Signed-off-by: default avatarPeter Xu <peterx@redhat.com>
      Reviewed-by: default avatarKonstantin Khlebnikov <khlebnikov@yandex-team.ru>
      Reviewed-by: default avatarWilliam Kucharski <william.kucharski@oracle.com>
      Acked-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
      Cc: Andrea Arcangeli <aarcange@redhat.com>
      Cc: Matthew Wilcox <willy@infradead.org>
      Cc: Michal Hocko <mhocko@suse.com>
      Cc: Dave Jiang <dave.jiang@intel.com>
      Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
      Cc: Souptick Joarder <jrdr.linux@gmail.com>
      Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
      Cc: Zi Yan <zi.yan@cs.rutgers.edu>
      Cc: <stable@vger.kernel.org>	[4.14+]
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Mikhail Zaslonko's avatar
      mm, memory_hotplug: initialize struct pages for the full memory section · 2830bf6f
      Mikhail Zaslonko authored
      If memory end is not aligned with the sparse memory section boundary,
      the mapping of such a section is only partly initialized.  This may lead
      to VM_BUG_ON due to uninitialized struct page access from
      is_mem_section_removable() or test_pages_in_a_zone() function triggered
      by memory_hotplug sysfs handlers:
      Here are the the panic examples:
       kernel parameter mem=2050M
       page:000003d082008000 is uninitialized and poisoned
       page dumped because: VM_BUG_ON_PAGE(PagePoisoned(p))
       Call Trace:
       ( test_pages_in_a_zone+0xde/0x160)
       Last Breaking-Event-Address:
       Kernel panic - not syncing: Fatal exception: panic_on_oops
       kernel parameter mem=3075M
       page:000003d08300c000 is uninitialized and poisoned
       page dumped because: VM_BUG_ON_PAGE(PagePoisoned(p))
       Call Trace:
       ( is_mem_section_removable+0xb4/0x190)
       Last Breaking-Event-Address:
       Kernel panic - not syncing: Fatal exception: panic_on_oops
      Fix the problem by initializing the last memory section of each zone in
      memmap_init_zone() till the very end, even if it goes beyond the zone end.
      Michal said:
      : This has alwways been problem AFAIU.  It just went unnoticed because we
      : have zeroed memmaps during allocation before f7f99100 ("mm: stop
      : zeroing memory during allocation in vmemmap") and so the above test
      : would simply skip these ranges as belonging to zone 0 or provided a
      : garbage.
      : So I guess we do care for post f7f99100 kernels mostly and
      : therefore Fixes: f7f99100 ("mm: stop zeroing memory during
      : allocation in vmemmap")
      Link: http://lkml.kernel.org/r/20181212172712.34019-2-zaslonko@linux.ibm.com
      Fixes: f7f99100
       ("mm: stop zeroing memory during allocation in vmemmap")
      Signed-off-by: default avatarMikhail Zaslonko <zaslonko@linux.ibm.com>
      Reviewed-by: default avatarGerald Schaefer <gerald.schaefer@de.ibm.com>
      Suggested-by: default avatarMichal Hocko <mhocko@kernel.org>
      Acked-by: default avatarMichal Hocko <mhocko@suse.com>
      Reported-by: default avatarMikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
      Tested-by: default avatarMikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
      Cc: Dave Hansen <dave.hansen@intel.com>
      Cc: Alexander Duyck <alexander.h.duyck@linux.intel.com>
      Cc: Pasha Tatashin <Pavel.Tatashin@microsoft.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: <stable@vger.kernel.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc · 6cafab50
      Linus Torvalds authored
      Pull sparc fixes from David Miller:
       "Just some small fixes here and there, and a refcount leak in a serial
        driver, nothing serious"
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
        serial/sunsu: fix refcount leak
        sparc: Set "ARCH: sunxx" information on the same line
        sparc: vdso: Drop implicit common-page-size linker flag
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · 87935eee
      Linus Torvalds authored
      Pull more networking fixes from David Miller:
       "Some more bug fixes have trickled in, we have:
        1) Local MAC entries properly in mscc driver, from Allan W. Nielsen.
        2) Eric Dumazet found some more of the typical "pskb_may_pull() -->
           oops forgot to reload the header pointer" bugs in ipv6 tunnel
        3) Bad SKB socket pointer in ipv6 fragmentation handling, from Herbert
        4) Overflow fix in sk_msg_clone(), from Vakul Garg.
        5) Validate address lengths in AF_PACKET, from Willem de Bruijn"
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
        qmi_wwan: Fix qmap header retrieval in qmimux_rx_fixup
        qmi_wwan: Add support for Fibocom NL678 series
        tls: Do not call sk_memcopy_from_iter with zero length
        ipv6: tunnels: fix two use-after-free
        Prevent overflow of sk_msg in sk_msg_clone()
        packet: validate address length
        net: netxen: fix a missing check and an uninitialized use
        tcp: fix a race in inet_diag_dump_icsk()
        MAINTAINERS: update cxgb4 and cxgb3 maintainer
        ipv6: frags: Fix bogus skb->sk in reassembled packets
        mscc: Configured MAC entries should be locked.
    • Mans Rullgard's avatar
      auxdisplay: charlcd: fix x/y command parsing · 9bc30ab8
      Mans Rullgard authored
      The x/y command parsing has been broken since commit 12995706
      ("staging: panel: Fixed checkpatch warning about simple_strtoul()").
      Commit b34050fa
       ("auxdisplay: charlcd: Fix and clean up handling of
      x/y commands") fixed some problems by rewriting the parsing code,
      but also broke things further by removing the check for a complete
      command before attempting to parse it.  As a result, parsing is
      terminated at the first x or y character.
      This reinstates the check for a final semicolon.  Whereas the original
      code use strchr(), this is wasteful seeing as the semicolon is always
      at the end of the buffer.  Thus check this character directly instead.
      Signed-off-by: default avatarMans Rullgard <mans@mansr.com>
      Signed-off-by: default avatarMiguel Ojeda <miguel.ojeda.sandonis@gmail.com>
    • Yangtao Li's avatar
      serial/sunsu: fix refcount leak · d430aff8
      Yangtao Li authored
      The function of_find_node_by_path() acquires a reference to the node
      returned by it and that reference needs to be dropped by its caller.
      su_get_type() doesn't do that. The match node are used as an identifier
      to compare against the current node, so we can directly drop the refcount
      after getting the node from the path as it is not used as pointer.
      Fix this by use a single variable and drop the refcount right after
      Signed-off-by: default avatarYangtao Li <tiny.windzz@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • Corentin Labbe's avatar
      sparc: Set "ARCH: sunxx" information on the same line · afaffac3
      Corentin Labbe authored
      While checking boot log from SPARC qemu, I saw that the "ARCH: sunxx"
      information was split on two different line.
      This patchs merge both line together.
      In the meantime, thoses information need to be printed via pr_info
      since printk print them by default via the warning loglevel.
      Signed-off-by: default avatarCorentin Labbe <clabbe@baylibre.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • ndesaulniers@google.com's avatar
      sparc: vdso: Drop implicit common-page-size linker flag · 0ff70f62
      ndesaulniers@google.com authored
      GNU linker's -z common-page-size's default value is based on the target
      architecture. arch/sparc/vdso/Makefile sets it to the architecture
      default, which is implicit and redundant. Drop it.
      Link: https://lkml.kernel.org/r/20181206191231.192355-1-ndesaulniers@google.com
      Signed-off-by: default avatarNick Desaulniers <ndesaulniers@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    • Linus Torvalds's avatar
      Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm · 5092adb2
      Linus Torvalds authored
      Pull kvm fix from Paolo Bonzini:
       "A simple patch for a pretty bad bug: Unbreak AMD nested
      * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
        KVM: x86: nSVM: fix switch to guest mmu
    • Daniele Palmas's avatar
      qmi_wwan: Fix qmap header retrieval in qmimux_rx_fixup · d667044f
      Daniele Palmas authored
      This patch fixes qmap header retrieval when modem is configured for
      dl data aggregation.
      Signed-off-by: default avatarDaniele Palmas <dnlplm@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>