5637 Commits

Author SHA1 Message Date
Linus Torvalds
a50a8c3833 regmap: Updates for v5.18
A couple of small fixes, plus some new features that enable us to handle
 devices that reformat register addresses depending on the bus used to
 handle the control interface more gracefully.
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Merge tag 'regmap-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap updates from Mark Brown:
 "A couple of small fixes, plus some new features that enable us to
  handle devices that reformat register addresses depending on the bus
  used to handle the control interface more gracefully"

* tag 'regmap-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: allow a defined reg_base to be added to every address
  regmap: add configurable downshift for addresses
  regmap: irq: cleanup comments
  regmap-irq: Fix typo in comment
2022-03-21 18:22:42 -07:00
Linus Torvalds
616355cc81 for-5.18/block-2022-03-18
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Merge tag 'for-5.18/block-2022-03-18' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:

 - BFQ cleanups and fixes (Yu, Zhang, Yahu, Paolo)

 - blk-rq-qos completion fix (Tejun)

 - blk-cgroup merge fix (Tejun)

 - Add offline error return value to distinguish it from an IO error on
   the device (Song)

 - IO stats fixes (Zhang, Christoph)

 - blkcg refcount fixes (Ming, Yu)

 - Fix for indefinite dispatch loop softlockup (Shin'ichiro)

 - blk-mq hardware queue management improvements (Ming)

 - sbitmap dead code removal (Ming, John)

 - Plugging merge improvements (me)

 - Show blk-crypto capabilities in sysfs (Eric)

 - Multiple delayed queue run improvement (David)

 - Block throttling fixes (Ming)

 - Start deprecating auto module loading based on dev_t (Christoph)

 - bio allocation improvements (Christoph, Chaitanya)

 - Get rid of bio_devname (Christoph)

 - bio clone improvements (Christoph)

 - Block plugging improvements (Christoph)

 - Get rid of genhd.h header (Christoph)

 - Ensure drivers use appropriate flush helpers (Christoph)

 - Refcounting improvements (Christoph)

 - Queue initialization and teardown improvements (Ming, Christoph)

 - Misc fixes/improvements (Barry, Chaitanya, Colin, Dan, Jiapeng,
   Lukas, Nian, Yang, Eric, Chengming)

* tag 'for-5.18/block-2022-03-18' of git://git.kernel.dk/linux-block: (127 commits)
  block: cancel all throttled bios in del_gendisk()
  block: let blkcg_gq grab request queue's refcnt
  block: avoid use-after-free on throttle data
  block: limit request dispatch loop duration
  block/bfq-iosched: Fix spelling mistake "tenative" -> "tentative"
  sr: simplify the local variable initialization in sr_block_open()
  block: don't merge across cgroup boundaries if blkcg is enabled
  block: fix rq-qos breakage from skipping rq_qos_done_bio()
  block: flush plug based on hardware and software queue order
  block: ensure plug merging checks the correct queue at least once
  block: move rq_qos_exit() into disk_release()
  block: do more work in elevator_exit
  block: move blk_exit_queue into disk_release
  block: move q_usage_counter release into blk_queue_release
  block: don't remove hctx debugfs dir from blk_mq_exit_queue
  block: move blkcg initialization/destroy into disk allocation/release handler
  sr: implement ->free_disk to simplify refcounting
  sd: implement ->free_disk to simplify refcounting
  sd: delay calling free_opal_dev
  sd: call sd_zbc_release_disk before releasing the scsi_device reference
  ...
2022-03-21 16:48:55 -07:00
Linus Torvalds
02b82b02c3 Power management updates for 5.18-rc1
- Allow device_pm_check_callbacks() to be called from interrupt
    context without issues (Dmitry Baryshkov).
 
  - Modify devm_pm_runtime_enable() to automatically handle
    pm_runtime_dont_use_autosuspend() at driver exit time (Douglas
    Anderson).
 
  - Make the schedutil cpufreq governor use to_gov_attr_set() instead
    of open coding it (Kevin Hao).
 
  - Replace acpi_bus_get_device() with acpi_fetch_acpi_dev() in the
    cpufreq longhaul driver (Rafael Wysocki).
 
  - Unify show() and store() naming in cpufreq and make it use
    __ATTR_XX (Lianjie Zhang).
 
  - Make the intel_pstate driver use the EPP value set by the firmware
    by default (Srinivas Pandruvada).
 
  - Re-order the init checks in the powernow-k8 cpufreq driver (Mario
    Limonciello).
 
  - Make the ACPI processor idle driver check for architectural
    support for LPI to avoid using it on x86 by mistake (Mario
    Limonciello).
 
  - Add Sapphire Rapids Xeon support to the intel_idle driver (Artem
    Bityutskiy).
 
  - Add 'preferred_cstates' module argument to the intel_idle driver
    to work around C1 and C1E handling issue on Sapphire Rapids (Artem
    Bityutskiy).
 
  - Add core C6 optimization on Sapphire Rapids to the intel_idle
    driver (Artem Bityutskiy).
 
  - Optimize the haltpoll cpuidle driver a bit (Li RongQing).
 
  - Remove leftover text from intel_idle() kerneldoc comment and fix
    up white space in intel_idle (Rafael Wysocki).
 
  - Fix load_image_and_restore() error path (Ye Bin).
 
  - Fix typos in comments in the system wakeup hadling code (Tom Rix).
 
  - Clean up non-kernel-doc comments in hibernation code (Jiapeng
    Chong).
 
  - Fix __setup handler error handling in system-wide suspend and
    hibernation core code (Randy Dunlap).
 
  - Add device name to suspend_report_result() (Youngjin Jang).
 
  - Make virtual guests honour ACPI S4 hardware signature by
    default (David Woodhouse).
 
  - Block power off of a parent PM domain unless child is in deepest
    state (Ulf Hansson).
 
  - Use dev_err_probe() to simplify error handling for generic PM
    domains (Ahmad Fatoum).
 
  - Fix sleep-in-atomic bug caused by genpd_debug_remove() (Shawn Guo).
 
  - Document Intel uncore frequency scaling (Srinivas Pandruvada).
 
  - Add DTPM hierarchy description (Daniel Lezcano).
 
  - Change the locking scheme in DTPM (Daniel Lezcano).
 
  - Fix dtpm_cpu cleanup at exit time and missing virtual DTPM pointer
    release (Daniel Lezcano).
 
  - Make dtpm_node_callback[] static (kernel test robot).
 
  - Fix spelling mistake "initialze" -> "initialize" in
    dtpm_create_hierarchy() (Colin Ian King).
 
  - Add tracer tool for the amd-pstate driver (Jinzhou Su).
 
  - Fix PC6 displaying in turbostat on some systems (Artem Bityutskiy).
 
  - Add AMD P-State support to the cpupower utility (Huang Rui).
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Merge tag 'pm-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management updates from Rafael Wysocki:
 "These are mostly fixes and cleanups all over the code and a new piece
  of documentation for Intel uncore frequency scaling.

  Functionality-wise, the intel_idle driver will support Sapphire Rapids
  Xeons natively now (with some extra facilities for controlling
  C-states more precisely on those systems), virtual guests will take
  the ACPI S4 hardware signature into account by default, the
  intel_pstate driver will take the defualt EPP value from the firmware,
  cpupower utility will support the AMD P-state driver added in the
  previous cycle, and there is a new tracer utility for that driver.

  Specifics:

   - Allow device_pm_check_callbacks() to be called from interrupt
     context without issues (Dmitry Baryshkov).

   - Modify devm_pm_runtime_enable() to automatically handle
     pm_runtime_dont_use_autosuspend() at driver exit time (Douglas
     Anderson).

   - Make the schedutil cpufreq governor use to_gov_attr_set() instead
     of open coding it (Kevin Hao).

   - Replace acpi_bus_get_device() with acpi_fetch_acpi_dev() in the
     cpufreq longhaul driver (Rafael Wysocki).

   - Unify show() and store() naming in cpufreq and make it use
     __ATTR_XX (Lianjie Zhang).

   - Make the intel_pstate driver use the EPP value set by the firmware
     by default (Srinivas Pandruvada).

   - Re-order the init checks in the powernow-k8 cpufreq driver (Mario
     Limonciello).

   - Make the ACPI processor idle driver check for architectural support
     for LPI to avoid using it on x86 by mistake (Mario Limonciello).

   - Add Sapphire Rapids Xeon support to the intel_idle driver (Artem
     Bityutskiy).

   - Add 'preferred_cstates' module argument to the intel_idle driver to
     work around C1 and C1E handling issue on Sapphire Rapids (Artem
     Bityutskiy).

   - Add core C6 optimization on Sapphire Rapids to the intel_idle
     driver (Artem Bityutskiy).

   - Optimize the haltpoll cpuidle driver a bit (Li RongQing).

   - Remove leftover text from intel_idle() kerneldoc comment and fix up
     white space in intel_idle (Rafael Wysocki).

   - Fix load_image_and_restore() error path (Ye Bin).

   - Fix typos in comments in the system wakeup hadling code (Tom Rix).

   - Clean up non-kernel-doc comments in hibernation code (Jiapeng
     Chong).

   - Fix __setup handler error handling in system-wide suspend and
     hibernation core code (Randy Dunlap).

   - Add device name to suspend_report_result() (Youngjin Jang).

   - Make virtual guests honour ACPI S4 hardware signature by default
     (David Woodhouse).

   - Block power off of a parent PM domain unless child is in deepest
     state (Ulf Hansson).

   - Use dev_err_probe() to simplify error handling for generic PM
     domains (Ahmad Fatoum).

   - Fix sleep-in-atomic bug caused by genpd_debug_remove() (Shawn Guo).

   - Document Intel uncore frequency scaling (Srinivas Pandruvada).

   - Add DTPM hierarchy description (Daniel Lezcano).

   - Change the locking scheme in DTPM (Daniel Lezcano).

   - Fix dtpm_cpu cleanup at exit time and missing virtual DTPM pointer
     release (Daniel Lezcano).

   - Make dtpm_node_callback[] static (kernel test robot).

   - Fix spelling mistake "initialze" -> "initialize" in
     dtpm_create_hierarchy() (Colin Ian King).

   - Add tracer tool for the amd-pstate driver (Jinzhou Su).

   - Fix PC6 displaying in turbostat on some systems (Artem Bityutskiy).

   - Add AMD P-State support to the cpupower utility (Huang Rui)"

* tag 'pm-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (58 commits)
  cpufreq: powernow-k8: Re-order the init checks
  cpuidle: intel_idle: Drop redundant backslash at line end
  cpuidle: intel_idle: Update intel_idle() kerneldoc comment
  PM: hibernate: Honour ACPI hardware signature by default for virtual guests
  cpufreq: intel_pstate: Use firmware default EPP
  cpufreq: unify show() and store() naming and use __ATTR_XX
  PM: core: keep irq flags in device_pm_check_callbacks()
  cpuidle: haltpoll: Call cpuidle_poll_state_init() later
  Documentation: amd-pstate: add tracer tool introduction
  tools/power/x86/amd_pstate_tracer: Add tracer tool for AMD P-state
  tools/power/x86/intel_pstate_tracer: make tracer as a module
  cpufreq: amd-pstate: Add more tracepoint for AMD P-State module
  PM: sleep: Add device name to suspend_report_result()
  turbostat: fix PC6 displaying on some systems
  intel_idle: add core C6 optimization for SPR
  intel_idle: add 'preferred_cstates' module argument
  intel_idle: add SPR support
  PM: runtime: Have devm_pm_runtime_enable() handle pm_runtime_dont_use_autosuspend()
  ACPI: processor idle: Check for architectural support for LPI
  cpuidle: PSCI: Move the `has_lpi` check to the beginning of the function
  ...
2022-03-21 14:26:28 -07:00
Linus Torvalds
242ba6656d ACPI updates for 5.18-rc1
- Use uintptr_t and offsetof() in the ACPICA code to avoid compiler
    warnings regarding NULL pointer arithmetic (Rafael Wysocki).
 
  - Fix possible NULL pointer dereference in acpi_ns_walk_namespace()
    when passed "acpi=off" in the command line (Rafael Wysocki).
 
  - Fix and clean up acpi_os_read/write_port() (Rafael Wysocki).
 
  - Introduce acpi_bus_for_each_dev() and use it for walking all ACPI
    device objects in the Type C code (Rafael Wysocki).
 
  - Fix the _OSC platform capabilities negotioation and prevent CPPC
    from being used if the platform firmware indicates that it not
    supported via _OSC (Rafael Wysocki).
 
  - Use ida_alloc() instead of ida_simple_get() for ACPI enumeration
    of devices (Rafael Wysocki).
 
  - Add AGDI and CEDT to the list of known ACPI table signatures (Ilkka
    Koskinen, Robert Kiraly).
 
  - Add power management debug messages related to suspend-to-idle in
    two places (Rafael Wysocki).
 
  - Fix __acpi_node_get_property_reference() return value and clean up
    that function (Andy Shevchenko, Sakari Ailus).
 
  - Fix return value of the __setup handler in the ACPI PM timer clock
    source driver (Randy Dunlap).
 
  - Clean up double words in two comments (Tom Rix).
 
  - Add "skip i2c clients" quirks for Lenovo Yoga Tablet 1050F/L and
    Nextbook Ares 8 (Hans de Goede).
 
  - Clean up frequency invariance handling on x86 in the ACPI CPPC
    library (Huang Rui).
 
  - Work around broken XSDT on the Advantech DAC-BJ01 board (Mark
    Cilissen).
 
  - Make wakeup events checks in the ACPI EC driver more
    straightforward and clean up acpi_ec_submit_event() (Rafael
    Wysocki).
 
  - Make it possible to obtain the CPU capacity with the help of CPPC
    information (Ionela Voinescu).
 
  - Improve fine grained fan control in the ACPI fan driver and
    document it (Srinivas Pandruvada).
 
  - Add device HID and quirk for Microsoft Surface Go 3 to the ACPI
    battery driver (Maximilian Luz).
 
  - Make the ACPI driver for Intel SoCs (LPSS) let the SPI driver know
    the exact type of the controller (Andy Shevchenko).
 
  - Force native backlight mode on Clevo NL5xRU and NL5xNU (Werner
    Sembach).
 
  - Fix return value of __setup handlers in the APEI code (Randy
    Dunlap).
 
  - Add Arm Generic Diagnostic Dump and Reset device driver (Ilkka
    Koskinen).
 
  - Limit printable size of BERT table data (Darren Hart).
 
  - Fix up HEST and GHES initialization (Shuai Xue).
 
  - Update the ACPI device enumeration documentation and unify the ASL
    style in GPIO-related examples (Andy Shevchenko).
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Merge tag 'acpi-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI updates from Rafael Wysocki:
 "From the new functionality perspective, the most significant items
  here are the new driver for the 'ARM Generic Diagnostic Dump and
  Reset' device, the extension of fine grain fan control in the ACPI fan
  driver, and the change making it possible to use CPPC information to
  obtain CPU capacity.

  There are also a few new quirks, a bunch of fixes, including the
  platform-level _OSC handling change to make it actually take the
  platform firmware response into account, some code and documentation
  cleanups, and a notable update of the ACPI device enumeration
  documentation.

  Specifics:

   - Use uintptr_t and offsetof() in the ACPICA code to avoid compiler
     warnings regarding NULL pointer arithmetic (Rafael Wysocki).

   - Fix possible NULL pointer dereference in acpi_ns_walk_namespace()
     when passed "acpi=off" in the command line (Rafael Wysocki).

   - Fix and clean up acpi_os_read/write_port() (Rafael Wysocki).

   - Introduce acpi_bus_for_each_dev() and use it for walking all ACPI
     device objects in the Type C code (Rafael Wysocki).

   - Fix the _OSC platform capabilities negotioation and prevent CPPC
     from being used if the platform firmware indicates that it not
     supported via _OSC (Rafael Wysocki).

   - Use ida_alloc() instead of ida_simple_get() for ACPI enumeration of
     devices (Rafael Wysocki).

   - Add AGDI and CEDT to the list of known ACPI table signatures (Ilkka
     Koskinen, Robert Kiraly).

   - Add power management debug messages related to suspend-to-idle in
     two places (Rafael Wysocki).

   - Fix __acpi_node_get_property_reference() return value and clean up
     that function (Andy Shevchenko, Sakari Ailus).

   - Fix return value of the __setup handler in the ACPI PM timer clock
     source driver (Randy Dunlap).

   - Clean up double words in two comments (Tom Rix).

   - Add "skip i2c clients" quirks for Lenovo Yoga Tablet 1050F/L and
     Nextbook Ares 8 (Hans de Goede).

   - Clean up frequency invariance handling on x86 in the ACPI CPPC
     library (Huang Rui).

   - Work around broken XSDT on the Advantech DAC-BJ01 board (Mark
     Cilissen).

   - Make wakeup events checks in the ACPI EC driver more
     straightforward and clean up acpi_ec_submit_event() (Rafael
     Wysocki).

   - Make it possible to obtain the CPU capacity with the help of CPPC
     information (Ionela Voinescu).

   - Improve fine grained fan control in the ACPI fan driver and
     document it (Srinivas Pandruvada).

   - Add device HID and quirk for Microsoft Surface Go 3 to the ACPI
     battery driver (Maximilian Luz).

   - Make the ACPI driver for Intel SoCs (LPSS) let the SPI driver know
     the exact type of the controller (Andy Shevchenko).

   - Force native backlight mode on Clevo NL5xRU and NL5xNU (Werner
     Sembach).

   - Fix return value of __setup handlers in the APEI code (Randy
     Dunlap).

   - Add Arm Generic Diagnostic Dump and Reset device driver (Ilkka
     Koskinen).

   - Limit printable size of BERT table data (Darren Hart).

   - Fix up HEST and GHES initialization (Shuai Xue).

   - Update the ACPI device enumeration documentation and unify the ASL
     style in GPIO-related examples (Andy Shevchenko)"

* tag 'acpi-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (52 commits)
  clocksource: acpi_pm: fix return value of __setup handler
  ACPI: bus: Avoid using CPPC if not supported by firmware
  Revert "ACPI: Pass the same capabilities to the _OSC regardless of the query flag"
  ACPI: video: Force backlight native for Clevo NL5xRU and NL5xNU
  arm64, topology: enable use of init_cpu_capacity_cppc()
  arch_topology: obtain cpu capacity using information from CPPC
  x86, ACPI: rename init_freq_invariance_cppc() to arch_init_invariance_cppc()
  ACPI: AGDI: Add driver for Arm Generic Diagnostic Dump and Reset device
  ACPI: tables: Add AGDI to the list of known table signatures
  ACPI/APEI: Limit printable size of BERT table data
  ACPI: docs: gpio-properties: Unify ASL style for GPIO examples
  ACPI / x86: Work around broken XSDT on Advantech DAC-BJ01 board
  ACPI: APEI: fix return value of __setup handlers
  x86/ACPI: CPPC: Move init_freq_invariance_cppc() into x86 CPPC
  x86: Expose init_freq_invariance() to topology header
  x86/ACPI: CPPC: Move AMD maximum frequency ratio setting function into x86 CPPC
  x86/ACPI: CPPC: Rename cppc_msr.c to cppc.c
  ACPI / x86: Add skip i2c clients quirk for Lenovo Yoga Tablet 1050F/L
  ACPI / x86: Add skip i2c clients quirk for Nextbook Ares 8
  ACPICA: Avoid walking the ACPI Namespace if it is not there
  ...
2022-03-21 14:17:20 -07:00
Linus Torvalds
d752e21114 - Merge the AMD and Intel PPIN code into a shared one by both vendors.
Add the PPIN number to sysfs so that sockets can be identified when
 replacement is needed
 
 - Minor fixes and cleanups
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Merge tag 'x86_cpu_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 cpu feature updates from Borislav Petkov:

 - Merge the AMD and Intel PPIN code into a shared one by both vendors.
   Add the PPIN number to sysfs so that sockets can be identified when
   replacement is needed

 - Minor fixes and cleanups

* tag 'x86_cpu_for_v5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/cpu: Clear SME feature flag when not in use
  x86/cpufeatures: Put the AMX macros in the word 18 block
  topology/sysfs: Add PPIN in sysfs under cpu topology
  topology/sysfs: Add format parameter to macro defining "show" functions for proc
  x86/cpu: Read/save PPIN MSR during initialization
  x86/cpu: X86_FEATURE_INTEL_PPIN finally has a CPUID bit
  x86/cpu: Merge Intel and AMD ppin_init() functions
  x86/CPU/AMD: Use default_groups in kobj_type
2022-03-21 11:11:48 -07:00
Rafael J. Wysocki
dfad78e07e Merge branches 'pm-sleep', 'pm-domains' and 'pm-docs'
Merge changes related to system sleep, PM domains changes and power
management documentation changes for 5.18-rc1:

 - Fix load_image_and_restore() error path (Ye Bin).

 - Fix typos in comments in the system wakeup hadling code (Tom Rix).

 - Clean up non-kernel-doc comments in hibernation code (Jiapeng
   Chong).

 - Fix __setup handler error handling in system-wide suspend and
   hibernation core code (Randy Dunlap).

 - Add device name to suspend_report_result() (Youngjin Jang).

 - Make virtual guests honour ACPI S4 hardware signature by
   default (David Woodhouse).

 - Block power off of a parent PM domain unless child is in deepest
   state (Ulf Hansson).

 - Use dev_err_probe() to simplify error handling for generic PM
   domains (Ahmad Fatoum).

 - Fix sleep-in-atomic bug caused by genpd_debug_remove() (Shawn Guo).

 - Document Intel uncore frequency scaling (Srinivas Pandruvada).

* pm-sleep:
  PM: hibernate: Honour ACPI hardware signature by default for virtual guests
  PM: sleep: Add device name to suspend_report_result()
  PM: suspend: fix return value of __setup handler
  PM: hibernate: fix __setup handler error handling
  PM: hibernate: Clean up non-kernel-doc comments
  PM: sleep: wakeup: Fix typos in comments
  PM: hibernate: fix load_image_and_restore() error path

* pm-domains:
  PM: domains: Fix sleep-in-atomic bug caused by genpd_debug_remove()
  PM: domains: use dev_err_probe() to simplify error handling
  PM: domains: Prevent power off for parent unless child is in deepest state

* pm-docs:
  Documentation: admin-guide: pm: Document uncore frequency scaling
2022-03-18 18:29:21 +01:00
Colin Foster
0074f3f2b1
regmap: allow a defined reg_base to be added to every address
There's an inconsistency that arises when a register set can be accessed
internally via MMIO, or externally via SPI. The VSC7514 chip allows both
modes of operation. When internally accessed, the system utilizes __iomem,
devm_ioremap_resource, and devm_regmap_init_mmio.

For SPI it isn't possible to utilize memory-mapped IO. To properly operate,
the resource base must be added to the register before every operation.

Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Link: https://lore.kernel.org/r/20220313224524.399947-3-colin.foster@in-advantage.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-03-18 16:53:19 +00:00
Colin Foster
86fc59ef81
regmap: add configurable downshift for addresses
Add an additional reg_downshift to be applied to register addresses before
any register accesses. An example of a device that uses this is a VSC7514
chip, which require each register address to be downshifted by two if the
access is performed over a SPI bus.

Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Link: https://lore.kernel.org/r/20220313224524.399947-2-colin.foster@in-advantage.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-03-18 16:53:18 +00:00
Rafael J. Wysocki
24b2b094b5 Merge branches 'acpi-ec', 'acpi-cppc', 'acpi-fan' and 'acpi-battery'
Merge ACPI EC driver changes, CPPC-related changes, ACPI fan driver
changes and ACPI battery driver changes for 5.18-rc1:

 - Make wakeup events checks in the ACPI EC driver more
   straightforward and clean up acpi_ec_submit_event() (Rafael
   Wysocki).

 - Make it possible to obtain the CPU capacity with the help of CPPC
   information (Ionela Voinescu).

 - Improve fine grained fan control in the ACPI fan driver and
   document it (Srinivas Pandruvada).

 - Add device HID and quirk for Microsoft Surface Go 3 to the ACPI
   battery driver (Maximilian Luz).

* acpi-ec:
  ACPI: EC: Rearrange code in acpi_ec_submit_event()
  ACPI: EC: Reduce indentation level in acpi_ec_submit_event()
  ACPI: EC: Do not return result from advance_transaction()

* acpi-cppc:
  arm64, topology: enable use of init_cpu_capacity_cppc()
  arch_topology: obtain cpu capacity using information from CPPC
  x86, ACPI: rename init_freq_invariance_cppc() to arch_init_invariance_cppc()

* acpi-fan:
  Documentation/admin-guide/acpi: Add documentation for fine grain control
  ACPI: fan: Add additional attributes for fine grain control
  ACPI: fan: Properly handle fine grain control
  ACPI: fan: Optimize struct acpi_fan_fif
  ACPI: fan: Separate file for attributes creation
  ACPI: fan: Fix error reporting to user space

* acpi-battery:
  ACPI: battery: Add device HID and quirk for Microsoft Surface Go 3
2022-03-18 17:36:54 +01:00
lizhe
901581389e drivers/base/dd.c : Remove the initial value of the global variable
The global variable driver_deferred_probe_enable has a default value of
false and does not need to be initialized to false.

Signed-off-by: lizhe <sensor1010@163.com>
Link: https://lore.kernel.org/r/20220309135418.31101-1-sensor1010@163.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-03-18 14:31:31 +01:00
Julia Lawall
451fd6ee1a devres: fix typos in comments
Various spelling mistakes in comments.
Detected with the help of Coccinelle.

Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>

Link: https://lore.kernel.org/r/20220314115354.144023-19-Julia.Lawall@inria.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-03-18 14:30:12 +01:00
Geert Uytterhoeven
b0f6807d35 base: soc: Make soc_device_match() simpler and easier to read
The function soc_device_match() is difficult to read for various
reasons:
  - There are two loop conditions using different styles: "while (...)"
    (which is BTW always true) vs. "if ... break",
  - The are two return condition using different logic: "if ... return
    foo" vs. "if ... else return bar".

Make the code easier to read by:
  1. Removing the always-true "!ret" loop condition, and dropping the
     now unneeded pre-initialization of "ret",
  2. Converting "if ... break" to a proper "while (...)" loop condition,
  3. Inverting the logic of the second return condition.

Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/9f9107c06f7d065ae6581e5290ef5d72f7298fd1.1646132835.git.geert+renesas@glider.be
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-03-18 14:28:07 +01:00
Randy Dunlap
f2aad54703 driver core: dd: fix return value of __setup handler
When "driver_async_probe=nulltty" is used on the kernel boot command line,
it causes an Unknown parameter message and the string is added to init's
environment strings, polluting them.

  Unknown kernel command line parameters "BOOT_IMAGE=/boot/bzImage-517rc6
  driver_async_probe=nulltty", will be passed to user space.

 Run /sbin/init as init process
   with arguments:
     /sbin/init
   with environment:
     HOME=/
     TERM=linux
     BOOT_IMAGE=/boot/bzImage-517rc6
     driver_async_probe=nulltty

Change the return value of the __setup function to 1 to indicate
that the __setup option has been handled.

Link: lore.kernel.org/r/64644a2f-4a20-bab3-1e15-3b2cdd0defe3@omprussia.ru
Fixes: 1ea61b68d0f8 ("async: Add cmdline option to specify drivers to be async probed")
Cc: Feng Tang <feng.tang@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Reported-by: Igor Zhbanov <i.zhbanov@omprussia.ru>
Reviewed-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20220301041829.15137-1-rdunlap@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-03-18 14:27:51 +01:00
Rob Herring
4b775aaf1e driver core: Refactor sysfs and drv/bus remove hooks
There are 3 copies of the same device sysfs cleanup and drv/bus remove()
hooks used for probe failure, testing re-probing, and device unbinding.

Let's refactor the code to its own function.

Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220223225257.1681968-3-robh@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-03-18 14:27:26 +01:00
Rob Herring
9ad307213f driver core: Refactor multiple copies of device cleanup
There are 3 copies of the same device cleanup code used for probe failure,
testing re-probing, and device unbinding. Changes to this code often miss
at least one of the copies of the code. See commits d0243bbd5dd3 ("drivers
core: Free dma_range_map when driver probe failed") and d8f7a5484f21
("driver core: Free DMA range map when device is released") for example.

Let's refactor the code to its own function.

Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220223225257.1681968-2-robh@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-03-18 14:27:26 +01:00
Ingo Molnar
ccdbf33c23 Linux 5.17-rc8
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Merge tag 'v5.17-rc8' into sched/core, to pick up fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2022-03-15 10:28:12 +01:00
Ionela Voinescu
9924fbb51e arch_topology: obtain cpu capacity using information from CPPC
Define topology_init_cpu_capacity_cppc() to use highest performance
values from _CPC objects to obtain and set maximum capacity information
for each CPU. acpi_cppc_processor_probe() is a good point at which to
trigger the initialization of CPU (u-arch) capacity values, as at this
point the highest performance values can be obtained from each CPU's
_CPC objects. Architectures can therefore use this functionality
through arch_init_invariance_cppc().

The performance scale used by CPPC is a unified scale for all CPUs in
the system. Therefore, by obtaining the raw highest performance values
from the _CPC objects, and normalizing them on the [0, 1024] capacity
scale, used by the task scheduler, we obtain the CPU capacity of each
CPU.

While an ACPI Notify(0x85) could alert about a change in the highest
performance value, which should in turn retrigger the CPU capacity
computations, this notification is not currently handled by the ACPI
processor driver. When supported, a call to arch_init_invariance_cppc()
would perform the update.

Signed-off-by: Ionela Voinescu <ionela.voinescu@arm.com>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Tested-by: Valentin Schneider <valentin.schneider@arm.com>
Tested-by: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-03-10 20:21:58 +01:00
Dmitry Baryshkov
524bb1da78 PM: core: keep irq flags in device_pm_check_callbacks()
The function device_pm_check_callbacks() can be called under the spin
lock (in the reported case it happens from genpd_add_device() ->
dev_pm_domain_set(), when the genpd uses spinlocks rather than mutexes.

However this function uncoditionally uses spin_lock_irq() /
spin_unlock_irq(), thus not preserving the CPU flags. Use the
irqsave/irqrestore instead.

The backtrace for the reference:
[    2.752010] ------------[ cut here ]------------
[    2.756769] raw_local_irq_restore() called with IRQs enabled
[    2.762596] WARNING: CPU: 4 PID: 1 at kernel/locking/irqflag-debug.c:10 warn_bogus_irq_restore+0x34/0x50
[    2.772338] Modules linked in:
[    2.775487] CPU: 4 PID: 1 Comm: swapper/0 Tainted: G S                5.17.0-rc6-00384-ge330d0d82eff-dirty #684
[    2.781384] Freeing initrd memory: 46024K
[    2.785839] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[    2.785841] pc : warn_bogus_irq_restore+0x34/0x50
[    2.785844] lr : warn_bogus_irq_restore+0x34/0x50
[    2.785846] sp : ffff80000805b7d0
[    2.785847] x29: ffff80000805b7d0 x28: 0000000000000000 x27: 0000000000000002
[    2.785850] x26: ffffd40e80930b18 x25: ffff7ee2329192b8 x24: ffff7edfc9f60800
[    2.785853] x23: ffffd40e80930b18 x22: ffffd40e80930d30 x21: ffff7edfc0dffa00
[    2.785856] x20: ffff7edfc09e3768 x19: 0000000000000000 x18: ffffffffffffffff
[    2.845775] x17: 6572206f74206465 x16: 6c696166203a3030 x15: ffff80008805b4f7
[    2.853108] x14: 0000000000000000 x13: ffffd40e809550b0 x12: 00000000000003d8
[    2.860441] x11: 0000000000000148 x10: ffffd40e809550b0 x9 : ffffd40e809550b0
[    2.867774] x8 : 00000000ffffefff x7 : ffffd40e809ad0b0 x6 : ffffd40e809ad0b0
[    2.875107] x5 : 000000000000bff4 x4 : 0000000000000000 x3 : 0000000000000000
[    2.882440] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff7edfc03a8000
[    2.889774] Call trace:
[    2.892290]  warn_bogus_irq_restore+0x34/0x50
[    2.896770]  _raw_spin_unlock_irqrestore+0x94/0xa0
[    2.901690]  genpd_unlock_spin+0x20/0x30
[    2.905724]  genpd_add_device+0x100/0x2d0
[    2.909850]  __genpd_dev_pm_attach+0xa8/0x23c
[    2.914329]  genpd_dev_pm_attach_by_id+0xc4/0x190
[    2.919167]  genpd_dev_pm_attach_by_name+0x3c/0xd0
[    2.924086]  dev_pm_domain_attach_by_name+0x24/0x30
[    2.929102]  psci_dt_attach_cpu+0x24/0x90
[    2.933230]  psci_cpuidle_probe+0x2d4/0x46c
[    2.937534]  platform_probe+0x68/0xe0
[    2.941304]  really_probe.part.0+0x9c/0x2fc
[    2.945605]  __driver_probe_device+0x98/0x144
[    2.950085]  driver_probe_device+0x44/0x15c
[    2.954385]  __device_attach_driver+0xb8/0x120
[    2.958950]  bus_for_each_drv+0x78/0xd0
[    2.962896]  __device_attach+0xd8/0x180
[    2.966843]  device_initial_probe+0x14/0x20
[    2.971144]  bus_probe_device+0x9c/0xa4
[    2.975092]  device_add+0x380/0x88c
[    2.978679]  platform_device_add+0x114/0x234
[    2.983067]  platform_device_register_full+0x100/0x190
[    2.988344]  psci_idle_init+0x6c/0xb0
[    2.992113]  do_one_initcall+0x74/0x3a0
[    2.996060]  kernel_init_freeable+0x2fc/0x384
[    3.000543]  kernel_init+0x28/0x130
[    3.004132]  ret_from_fork+0x10/0x20
[    3.007817] irq event stamp: 319826
[    3.011404] hardirqs last  enabled at (319825): [<ffffd40e7eda0268>] __up_console_sem+0x78/0x84
[    3.020332] hardirqs last disabled at (319826): [<ffffd40e7fd6d9d8>] el1_dbg+0x24/0x8c
[    3.028458] softirqs last  enabled at (318312): [<ffffd40e7ec90410>] _stext+0x410/0x588
[    3.036678] softirqs last disabled at (318299): [<ffffd40e7ed1bf68>] __irq_exit_rcu+0x158/0x174
[    3.045607] ---[ end trace 0000000000000000 ]---

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-03-10 19:40:15 +01:00
Youngjin Jang
a759de6991 PM: sleep: Add device name to suspend_report_result()
Currently, suspend_report_result() prints only function information.

If any driver uses a common PM function, nobody knows who exactly
called the failing function.

A device pinter is needed to recognize the failing device.

For example:

 PM: dpm_run_callback(): pnp_bus_suspend+0x0/0x10 returns 0
 PM: dpm_run_callback(): pci_pm_suspend+0x0/0x150 returns 0

become after the change:

 serial 00:05: PM: dpm_run_callback(): pnp_bus_suspend+0x0/0x10 returns 0
 pci 0000:00:01.3: PM: dpm_run_callback(): pci_pm_suspend+0x0/0x150 returns 0

Signed-off-by: Youngjin Jang <yj84.jang@samsung.com>
[ rjw: Changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-03-08 19:57:01 +01:00
Douglas Anderson
b4060db925 PM: runtime: Have devm_pm_runtime_enable() handle pm_runtime_dont_use_autosuspend()
The PM Runtime docs say:

  Drivers in ->remove() callback should undo the runtime PM changes done
  in ->probe(). Usually this means calling pm_runtime_disable(),
  pm_runtime_dont_use_autosuspend() etc.

From grepping code, it's clear that many people aren't aware of the
need to call pm_runtime_dont_use_autosuspend().

When brainstorming solutions, one idea that came up was to leverage
the new-ish devm_pm_runtime_enable() function. The idea here is that:

 * When the devm action is called we know that the driver is being
   removed. It's the perfect time to undo the use_autosuspend.

 * The code of pm_runtime_dont_use_autosuspend() already handles the
   case of being called when autosuspend wasn't enabled.

Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-03-04 18:26:54 +01:00
Tom Rix
7dfe105dfc PM: sleep: wakeup: Fix typos in comments
Remove the second 'the'.
Replace the second 'of' with 'the'.
Replace 'couter' with 'counter'.

Signed-off-by: Tom Rix <trix@redhat.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-03-01 16:17:32 +01:00
Shawn Guo
f6bfe8b5b2 PM: domains: Fix sleep-in-atomic bug caused by genpd_debug_remove()
When a genpd with GENPD_FLAG_IRQ_SAFE gets removed, the following
sleep-in-atomic bug will be seen, as genpd_debug_remove() will be called
with a spinlock being held.

[    0.029183] BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1460
[    0.029204] in_atomic(): 1, irqs_disabled(): 128, non_block: 0, pid: 1, name: swapper/0
[    0.029219] preempt_count: 1, expected: 0
[    0.029230] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.17.0-rc4+ #489
[    0.029245] Hardware name: Thundercomm TurboX CM2290 (DT)
[    0.029256] Call trace:
[    0.029265]  dump_backtrace.part.0+0xbc/0xd0
[    0.029285]  show_stack+0x3c/0xa0
[    0.029298]  dump_stack_lvl+0x7c/0xa0
[    0.029311]  dump_stack+0x18/0x34
[    0.029323]  __might_resched+0x10c/0x13c
[    0.029338]  __might_sleep+0x4c/0x80
[    0.029351]  down_read+0x24/0xd0
[    0.029363]  lookup_one_len_unlocked+0x9c/0xcc
[    0.029379]  lookup_positive_unlocked+0x10/0x50
[    0.029392]  debugfs_lookup+0x68/0xac
[    0.029406]  genpd_remove.part.0+0x12c/0x1b4
[    0.029419]  of_genpd_remove_last+0xa8/0xd4
[    0.029434]  psci_cpuidle_domain_probe+0x174/0x53c
[    0.029449]  platform_probe+0x68/0xe0
[    0.029462]  really_probe+0x190/0x430
[    0.029473]  __driver_probe_device+0x90/0x18c
[    0.029485]  driver_probe_device+0x40/0xe0
[    0.029497]  __driver_attach+0xf4/0x1d0
[    0.029508]  bus_for_each_dev+0x70/0xd0
[    0.029523]  driver_attach+0x24/0x30
[    0.029534]  bus_add_driver+0x164/0x22c
[    0.029545]  driver_register+0x78/0x130
[    0.029556]  __platform_driver_register+0x28/0x34
[    0.029569]  psci_idle_init_domains+0x1c/0x28
[    0.029583]  do_one_initcall+0x50/0x1b0
[    0.029595]  kernel_init_freeable+0x214/0x280
[    0.029609]  kernel_init+0x2c/0x13c
[    0.029622]  ret_from_fork+0x10/0x20

It doesn't seem necessary to call genpd_debug_remove() with the lock, so
move it out from locking to fix the problem.

Fixes: 718072ceb211 ("PM: domains: create debugfs nodes when adding power domains")
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Cc: 5.11+ <stable@vger.kernel.org> # 5.11+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-03-01 16:00:46 +01:00
Ahmad Fatoum
9a6582b839 PM: domains: use dev_err_probe() to simplify error handling
dev_err_probe() can reduce code size, makes the code easier to read
and has the added benefit of recording the defer reason for later
read out. Use it where appropriate.

This also fixes an issue, where an error message in __genpd_dev_pm_attach
was not terminated by a line break.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-03-01 15:58:17 +01:00
Ulf Hansson
e7d90cfac5 PM: domains: Prevent power off for parent unless child is in deepest state
A PM domain managed by genpd may support multiple idlestates (power-off
states). During genpd_power_off() a genpd governor may be asked to select
one of the idlestates based upon the dev PM QoS constraints, for example.

However, there is a problem with the behaviour around this in genpd. More
precisely, a parent-domain is allowed to be powered off, no matter of what
idlestate that has been selected for the child-domain.

For the stm32mp1 platform from STMicro, this behaviour doesn't play well.
Instead, the parent-domain must not be powered off, unless the deepest
idlestate has been selected for the child-domain. As the current behaviour
in genpd is quite questionable anyway, let's simply change it into what is
needed by the stm32mp1 platform.

If it surprisingly turns out that other platforms may need a different
behaviour from genpd, then we will have to revisit this to find a way to
make it configurable.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-03-01 15:55:41 +01:00
Greg Kroah-Hartman
4a248f85b3 Merge 5.17-rc6 into driver-core-next
We need the driver core fix in here as well for future changes.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-28 07:45:41 +01:00
Linus Torvalds
0e9894e6aa regmap: Fix for v5.17
A fix for interrupt controllers which require the explicit
 acknowledgement of interrupts using a different register to the one
 where interrupts are reported.  Urgent for the few devices this affects.
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Merge tag 'regmap-fix-v5.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap fix from Mark Brown:
 "A fix for interrupt controllers which require the explicit
  acknowledgement of interrupts using a different register to the one
  where interrupts are reported.

  Urgent for the few devices this affects"

* tag 'regmap-fix-v5.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap-irq: Update interrupt clear register for proper reset
2022-02-25 12:30:01 -08:00
Linus Torvalds
d68ccfdbe5 Driver core fix for 5.17-rc6
Here is a single driver core fix for 5.17-rc6.  It resolves a reported
 problem when the DMA map of a device is not properly released.
 
 It has been in linux-next with no reported problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.17-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core fix from Greg KH:
 "Here is a single driver core fix for 5.17-rc6. It resolves a reported
  problem when the DMA map of a device is not properly released.

  It has been in linux-next with no reported problems"

* tag 'driver-core-5.17-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  driver core: Free DMA range map when device is released
2022-02-25 12:05:40 -08:00
Yong Wu
2502960fba component: Add common helper for compare/release functions
The component requires the compare/release functions, there are so many
copies in current kernel. Just define four common helpers for them.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Link: https://lore.kernel.org/r/20220214060819.7334-2-yong.wu@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-25 12:16:12 +01:00
Randy Dunlap
36744c117a firmware_loader: EXTRA_FIRMWARE does not support compressed files
Document in the firmware loader Kconfig help text that firmware image
file compression is not supported for builtin EXTRA_FIRMWARE files so
that someone does not waste time trying that.

Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20220214222311.9758-1-rdunlap@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-25 12:14:42 +01:00
Wolfram Sang
24e3bb7429 Merge tag 'irq-api-2022-02-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into i2c/for-mergewindow
Provide a tag for maintainers to pull the generic_handle_irq_safe() API.
2022-02-23 14:14:15 +01:00
Mårten Lindahl
d8f7a5484f driver core: Free DMA range map when device is released
When unbinding/binding a driver with DMA mapped memory, the DMA map is
not freed before the driver is reloaded. This leads to a memory leak
when the DMA map is overwritten when reprobing the driver.

This can be reproduced with a platform driver having a dma-range:

dummy {
	...
	#address-cells = <0x2>;
	#size-cells = <0x2>;
	ranges;
	dma-ranges = <...>;
	...
};

and then unbinding/binding it:

~# echo soc:dummy >/sys/bus/platform/drivers/<driver>/unbind

DMA map object 0xffffff800b0ae540 still being held by &pdev->dev

~# echo soc:dummy >/sys/bus/platform/drivers/<driver>/bind
~# echo scan > /sys/kernel/debug/kmemleak
~# cat /sys/kernel/debug/kmemleak
unreferenced object 0xffffff800b0ae540 (size 64):
  comm "sh", pid 833, jiffies 4295174550 (age 2535.352s)
  hex dump (first 32 bytes):
    00 00 00 80 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 80 00 00 00 00 00 00 00 80 00 00 00 00  ................
  backtrace:
    [<ffffffefd1694708>] create_object.isra.0+0x108/0x344
    [<ffffffefd1d1a850>] kmemleak_alloc+0x8c/0xd0
    [<ffffffefd167e2d0>] __kmalloc+0x440/0x6f0
    [<ffffffefd1a960a4>] of_dma_get_range+0x124/0x220
    [<ffffffefd1a8ce90>] of_dma_configure_id+0x40/0x2d0
    [<ffffffefd198b68c>] platform_dma_configure+0x5c/0xa4
    [<ffffffefd198846c>] really_probe+0x8c/0x514
    [<ffffffefd1988990>] __driver_probe_device+0x9c/0x19c
    [<ffffffefd1988cd8>] device_driver_attach+0x54/0xbc
    [<ffffffefd1986634>] bind_store+0xc4/0x120
    [<ffffffefd19856e0>] drv_attr_store+0x30/0x44
    [<ffffffefd173c9b0>] sysfs_kf_write+0x50/0x60
    [<ffffffefd173c1c4>] kernfs_fop_write_iter+0x124/0x1b4
    [<ffffffefd16a013c>] new_sync_write+0xdc/0x160
    [<ffffffefd16a256c>] vfs_write+0x23c/0x2a0
    [<ffffffefd16a2758>] ksys_write+0x64/0xec

To prevent this we should free the dma_range_map when the device is
released.

Fixes: e0d072782c73 ("dma-mapping: introduce DMA range map, supplanting dma_pfn_offset")
Cc: stable <stable@vger.kernel.org>
Suggested-by: Rob Herring <robh@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mårten Lindahl <marten.lindahl@axis.com>
Link: https://lore.kernel.org/r/20220216094128.4025861-1-marten.lindahl@axis.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-22 08:40:02 +01:00
Tom Rix
b4ae8c2fb6 driver core: cleanup double words comments
Remove the second 'are' and 'the'.

Signed-off-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/20220212143233.2648872-1-trix@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-22 08:16:05 +01:00
Ingo Molnar
6255b48aeb Linux 5.17-rc5
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Merge tag 'v5.17-rc5' into sched/core, to resolve conflicts

New conflicts in sched/core due to the following upstream fixes:

  44585f7bc0cb ("psi: fix "defined but not used" warnings when CONFIG_PROC_FS=n")
  a06247c6804f ("psi: Fix uaf issue when psi trigger is destroyed while being polled")

Conflicts:
	include/linux/psi_types.h
	kernel/sched/psi.c

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2022-02-21 11:53:51 +01:00
Prasad Kumpatla
d04ad245d6
regmap-irq: Update interrupt clear register for proper reset
With the existing logic where clear_ack is true (HW doesn’t support
auto clear for ICR), interrupt clear register reset is not handled
properly. Due to this only the first interrupts get processed properly
and further interrupts are blocked due to not resetting interrupt
clear register.

Example for issue case where Invert_ack is false and clear_ack is true:

    Say Default ISR=0x00 & ICR=0x00 and ISR is triggered with 2
    interrupts making ISR = 0x11.

    Step 1: Say ISR is set 0x11 (store status_buff = ISR). ISR needs to
            be cleared with the help of ICR once the Interrupt is processed.

    Step 2: Write ICR = 0x11 (status_buff), this will clear the ISR to 0x00.

    Step 3: Issue - In the existing code, ICR is written with ICR =
            ~(status_buff) i.e ICR = 0xEE -> This will block all the interrupts
            from raising except for interrupts 0 and 4. So expectation here is to
            reset ICR, which will unblock all the interrupts.

            if (chip->clear_ack) {
                 if (chip->ack_invert && !ret)
                  ........
                 else if (!ret)
                     ret = regmap_write(map, reg,
                            ~data->status_buf[i]);

So writing 0 and 0xff (when ack_invert is true) should have no effect, other
than clearing the ACKs just set.

Fixes: 3a6f0fb7b8eb ("regmap: irq: Add support to clear ack registers")
Signed-off-by: Prasad Kumpatla <quic_pkumpatl@quicinc.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20220217085007.30218-1-quic_pkumpatl@quicinc.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-02-17 15:33:15 +00:00
Frederic Weisbecker
04d4e665a6 sched/isolation: Use single feature type while referring to housekeeping cpumask
Refer to housekeeping APIs using single feature types instead of flags.
This prevents from passing multiple isolation features at once to
housekeeping interfaces, which soon won't be possible anymore as each
isolation features will have their own cpumask.

Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Juri Lelli <juri.lelli@redhat.com>
Reviewed-by: Phil Auld <pauld@redhat.com>
Link: https://lore.kernel.org/r/20220207155910.527133-5-frederic@kernel.org
2022-02-16 15:57:55 +01:00
Andy Shevchenko
b2638e56c2 device property: Don't split fwnode_get_irq*() APIs in the code
New fwnode_get_irq_byname() landed after an unrelated function
by ordering. Move fwnode_iomap(), so fwnode_get_irq*() APIs will
go together.

No functional change intended.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-02-14 18:57:41 +01:00
Rafael J. Wysocki
a47381055b Merge branch 'i2c/alert-for-acpi' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c material for 5.18 that is depended on by subsequent device
properties changes.

* 'i2c/alert-for-acpi' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: smbus: Use device_*() functions instead of of_*()
  docs: firmware-guide: ACPI: Add named interrupt doc
  device property: Add fwnode_irq_get_byname
2022-02-14 18:55:50 +01:00
Tom Rix
2d2329787b
regmap: irq: cleanup comments
Replace the second 'which' with 'the'.
Change 'acknowleding' to 'acknowledging'.

Signed-off-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/20220212143144.2648689-1-trix@redhat.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-02-14 12:53:00 +00:00
Sergey Shtylyov
27446562a1 platform: use dev_err_probe() in platform_get_irq_byname()
The commit 2043727c2882 ("driver core: platform: Make use of the helper
function dev_err_probe()") missed to also convert platform_get_irq_byname()
for some strange reason -- do that now.

Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Link: https://lore.kernel.org/r/11a4aeb2-721c-56a9-919b-f356a30720e0@omp.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-08 12:22:07 +01:00
Rafael J. Wysocki
cb1f65c1e1 PM: s2idle: ACPI: Fix wakeup interrupts handling
After commit e3728b50cd9b ("ACPI: PM: s2idle: Avoid possible race
related to the EC GPE") wakeup interrupts occurring immediately after
the one discarded by acpi_s2idle_wake() may be missed.  Moreover, if
the SCI triggers again immediately after the rearming in
acpi_s2idle_wake(), that wakeup may be missed too.

The problem is that pm_system_irq_wakeup() only calls pm_system_wakeup()
when pm_wakeup_irq is 0, but that's not the case any more after the
interrupt causing acpi_s2idle_wake() to run until pm_wakeup_irq is
cleared by the pm_wakeup_clear() call in s2idle_loop().  However,
there may be wakeup interrupts occurring in that time frame and if
that happens, they will be missed.

To address that issue first move the clearing of pm_wakeup_irq to
the point at which it is known that the interrupt causing
acpi_s2idle_wake() to tun will be discarded, before rearming the SCI
for wakeup.  Moreover, because that only reduces the size of the
time window in which the issue may manifest itself, allow
pm_system_irq_wakeup() to register two second wakeup interrupts in
a row and, when discarding the first one, replace it with the second
one.  [Of course, this assumes that only one wakeup interrupt can be
discarded in one go, but currently that is the case and I am not
aware of any plans to change that.]

Fixes: e3728b50cd9b ("ACPI: PM: s2idle: Avoid possible race related to the EC GPE")
Cc: 5.4+ <stable@vger.kernel.org> # 5.4+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-02-07 21:02:31 +01:00
Anthony Iliopoulos
8f2d116045 devtmpfs: drop redundant fs parameters from internal fs
The internal_fs_type is mounted via vfs_kernel_mount() and is never
registered as a filesystem, thus specifying the parameters is redundant
as those params will not be validated by fs_validate_description().

Both {shmem,ramfs}_fs_parameters are anyway validated when those
respective filesystems are first registered, so there is no reason to
pass them to devtmpfs too, drop them.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Anthony Iliopoulos <ailiop@suse.com>
Link: https://lore.kernel.org/r/20220119220248.32225-1-ailiop@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-04 15:38:01 +01:00
Christoph Hellwig
322cbb50de block: remove genhd.h
There is no good reason to keep genhd.h separate from the main blkdev.h
header that includes it.  So fold the contents of genhd.h into blkdev.h
and remove genhd.h entirely.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20220124093913.742411-4-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-02-02 07:49:59 -07:00
Tony Luck
ab28e94419 topology/sysfs: Add PPIN in sysfs under cpu topology
PPIN is the Protected Processor Identification Number.
This is used to identify the socket as a Field Replaceable Unit (FRU).

Existing code only displays this when reporting errors. But this makes
it inconvenient for large clusters to use it for its intended purpose
of inventory control.

Add ppin to /sys/devices/system/cpu/cpu*/topology to make what
is already available using RDMSR more easily accessible. Make
the file read only for root in case there are still people
concerned about making a unique system "serial number" available.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20220131230111.2004669-6-tony.luck@intel.com
2022-02-01 16:36:42 +01:00
Tony Luck
182ecfaf75 topology/sysfs: Add format parameter to macro defining "show" functions for proc
All the simple (non-mask and non-list files in
/sys/devices/system/cpu/cpu0/topology/ are currently printed as decimal
integers.

Refactor the macro that generates the "show" functions to take a format
parameter to allow future files to display in other formats.

No functional change.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20220131230111.2004669-5-tony.luck@intel.com
2022-02-01 16:35:21 +01:00
Stephen Boyd
13e906e50a component: Replace most references to 'master' with 'aggregate device'
Remove most references to 'master' in the code and replace them with
some form of 'aggregate device'. This better reflects the reality of
what this code does, i.e. an aggregate device that represents a
device like a GPU card once some set of devices that make up the
aggregate device probe and register with the component framework.

Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Saravana Kannan <saravanak@google.com>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20220127200141.1295328-2-swboyd@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-01-31 14:45:35 +01:00
Akhil R
ca0acb511c device property: Add fwnode_irq_get_byname
Add fwnode_irq_get_byname() to get an interrupt by name from either
ACPI table or Device Tree, whichever is used for enumeration.

In the ACPI case, this allow us to use 'interrupt-names' in
_DSD which can be mapped to Interrupt() resource by index.
The implementation is similar to 'interrupt-names' in the
Device Tree.

Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
2022-01-28 21:55:35 +01:00
Luca Ceresoli
1056c41634
regmap-irq: Fix typo in comment
This is not a resource manager, it is a "Resource managed version of
regmap_add_irq_chip()". Fix the comment.

Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Link: https://lore.kernel.org/r/20220113144259.355845-1-luca@lucaceresoli.net
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-01-24 13:32:02 +00:00
Xiaoming Ni
6aad36d421 firmware_loader: move firmware sysctl to its own files
Patch series "sysctl: 3rd set of kernel/sysctl cleanups", v2.

This is the third set of patches to help address cleaning the kitchen
seink in kernel/sysctl.c and to move sysctls away to where they are
actually implemented / used.

This patch (of 8):

kernel/sysctl.c is a kitchen sink where everyone leaves their dirty
dishes, this makes it very difficult to maintain.

To help with this maintenance let's start by moving sysctls to places
where they actually belong.  The proc sysctl maintainers do not want to
know what sysctl knobs you wish to add for your own piece of code, we
just care about the core logic.

So move the firmware configuration sysctl table to the only place where
it is used, and make it clear that if sysctls are disabled this is not
used.

[akpm@linux-foundation.org: export register_firmware_config_sysctl and unregister_firmware_config_sysctl to modules]
[akpm@linux-foundation.org: use EXPORT_SYMBOL_NS_GPL instead]
[sfr@canb.auug.org.au: fix that so it compiles]
  Link: https://lkml.kernel.org/r/20211201160626.401d828d@canb.auug.org.au
[mcgrof@kernel.org: major commit log update to justify the move]

Link: https://lkml.kernel.org/r/20211124231435.1445213-1-mcgrof@kernel.org
Link: https://lkml.kernel.org/r/20211124231435.1445213-2-mcgrof@kernel.org
Signed-off-by: Xiaoming Ni <nixiaoming@huawei.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Kees Cook <keescook@chromium.org>
Cc: Iurii Zaikin <yzaikin@google.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Stephen Kitt <steve@sk2.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: John Ogness <john.ogness@linutronix.de>
Cc: Douglas Gilbert <dgilbert@interlog.com>
Cc: James E.J. Bottomley <jejb@linux.ibm.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Lukas Middendorf <kernel@tuxforce.de>
Cc: Antti Palosaari <crope@iki.fi>
Cc: Amir Goldstein <amir73il@gmail.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Benjamin LaHaise <bcrl@kvack.org>
Cc: Clemens Ladisch <clemens@ladisch.de>
Cc: David Airlie <airlied@linux.ie>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Julia Lawall <julia.lawall@inria.fr>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Paul Turner <pjt@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Phillip Potter <phil@philpotter.co.uk>
Cc: Qing Wang <wangqing@vivo.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Sebastian Reichel <sre@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-01-22 08:33:35 +02:00
Linus Torvalds
75242f31db RTC for 5.17
New driver:
  - Sunplus SP7021 RTC
  - Nintendo GameCube, Wii and Wii U RTC
 
 Drivers:
  - cmos: refactor UIP handling and presence check, fix century
  - rs5c372: offset correction support, report low voltage
  - rv8803: Epson RX8804 support
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Merge tag 'rtc-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

Pull RTC updates from Alexandre Belloni:
 "Two new drivers this cycle and a significant rework of the CMOS driver
  make the bulk of the changes.

  I also carry powerpc changes with the agreement of Michael.

  New drivers:
   - Sunplus SP7021 RTC
   - Nintendo GameCube, Wii and Wii U RTC

  Driver updates:
   - cmos: refactor UIP handling and presence check, fix century
   - rs5c372: offset correction support, report low voltage
   - rv8803: Epson RX8804 support"

* tag 'rtc-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (33 commits)
  rtc: sunplus: fix return value in sp_rtc_probe()
  rtc: cmos: Evaluate century appropriate
  rtc: gamecube: Fix an IS_ERR() vs NULL check
  rtc: mc146818-lib: fix signedness bug in mc146818_get_time()
  dt-bindings: rtc: qcom-pm8xxx-rtc: update register numbers
  rtc: pxa: fix null pointer dereference
  rtc: ftrtc010: Use platform_get_irq() to get the interrupt
  rtc: Move variable into switch case statement
  rtc: pcf2127: Fix typo in comment
  dt-bindings: rtc: Add Sunplus RTC json-schema
  rtc: Add driver for RTC in Sunplus SP7021
  rtc: rs5c372: fix incorrect oscillation value on r2221tl
  rtc: rs5c372: add offset correction support
  rtc: cmos: avoid UIP when writing alarm time
  rtc: cmos: avoid UIP when reading alarm time
  rtc: mc146818-lib: refactor mc146818_does_rtc_work
  rtc: mc146818-lib: refactor mc146818_get_time
  rtc: mc146818-lib: extract mc146818_avoid_UIP
  rtc: mc146818-lib: fix RTC presence check
  rtc: Check return value from mc146818_get_time()
  ...
2022-01-21 13:13:35 +02:00
Linus Torvalds
f4484d138b Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton:
 "55 patches.

  Subsystems affected by this patch series: percpu, procfs, sysctl,
  misc, core-kernel, get_maintainer, lib, checkpatch, binfmt, nilfs2,
  hfs, fat, adfs, panic, delayacct, kconfig, kcov, and ubsan"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (55 commits)
  lib: remove redundant assignment to variable ret
  ubsan: remove CONFIG_UBSAN_OBJECT_SIZE
  kcov: fix generic Kconfig dependencies if ARCH_WANTS_NO_INSTR
  lib/Kconfig.debug: make TEST_KMOD depend on PAGE_SIZE_LESS_THAN_256KB
  btrfs: use generic Kconfig option for 256kB page size limit
  arch/Kconfig: split PAGE_SIZE_LESS_THAN_256KB from PAGE_SIZE_LESS_THAN_64KB
  configs: introduce debug.config for CI-like setup
  delayacct: track delays from memory compact
  Documentation/accounting/delay-accounting.rst: add thrashing page cache and direct compact
  delayacct: cleanup flags in struct task_delay_info and functions use it
  delayacct: fix incomplete disable operation when switch enable to disable
  delayacct: support swapin delay accounting for swapping without blkio
  panic: remove oops_id
  panic: use error_report_end tracepoint on warnings
  fs/adfs: remove unneeded variable make code cleaner
  FAT: use io_schedule_timeout() instead of congestion_wait()
  hfsplus: use struct_group_attr() for memcpy() region
  nilfs2: remove redundant pointer sbufs
  fs/binfmt_elf: use PT_LOAD p_align values for static PIE
  const_structs.checkpatch: add frequently used ops structs
  ...
2022-01-20 10:41:01 +02:00