starfive-tech/linux.git/include/acpi, branch visionfive_v1_5.13

ACPI: fix NULL pointer dereference

2021-07-28T12:37:34+00:00

commit fc68f42aa737dc15e7665a4101d4168aadb8e4c4 upstream. Commit 71f642833284 ("ACPI: utils: Fix reference counting in for_each_acpi_dev_match()") started doing "acpi_dev_put()" on a pointer that was possibly NULL. That fails miserably, because that helper inline function is not set up to handle that case. Just make acpi_dev_put() silently accept a NULL pointer, rather than calling down to put_device() with an invalid offset off that NULL pointer. Link: https://lore.kernel.org/lkml/a607c149-6bf6-0fd0-0e31-100378504da2@kernel.dk/ Reported-and-tested-by: Jens Axboe Tested-by: Daniel Scally Cc: Andy Shevchenko Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman

ACPI: utils: Fix reference counting in for_each_acpi_dev_match()

2021-07-28T12:37:30+00:00

[ Upstream commit 71f6428332844f38c7cb10461d9f29e9c9b983a0 ] Currently it's possible to iterate over the dangling pointer in case the device suddenly disappears. This may happen becase callers put it at the end of a loop. Instead, let's move that call inside acpi_dev_get_next_match_dev(). Fixes: 803abec64ef9 ("media: ipu3-cio2: Add cio2-bridge to ipu3-cio2 driver") Fixes: bf263f64e804 ("media: ACPI / bus: Add acpi_dev_get_next_match_dev() and helper macro") Fixes: edbd1bc4951e ("efi/dev-path-parser: Switch to use for_each_acpi_dev_match()") Signed-off-by: Andy Shevchenko Reviewed-by: Daniel Scally Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin

Merge branches 'acpi-cppc', 'acpi-video' and 'acpi-utils'

2021-04-26T15:04:27+00:00

* acpi-cppc: ACPI: CPPC: Replace cppc_attr with kobj_attribute ACPI: CPPC: Add emtpy stubs of functions for CONFIG_ACPI_CPPC_LIB unset * acpi-video: ACPI: video: use native backlight for GA401/GA502/GA503 ACPI: video: Check LCD flag on ACPI-reduced-hardware devices ACPI: utils: Add acpi_reduced_hardware() helper * acpi-utils: ACPI: utils: Capitalize abbreviations in the comments ACPI: utils: Document for_each_acpi_dev_match() macro

Merge branches 'acpi-scan', 'acpi-drivers', 'acpi-pm' and 'acpi-resources'

2021-04-26T15:03:46+00:00

* acpi-scan: ACPI: bus: Introduce acpi_dev_get() and reuse it in ACPI code ACPI: scan: Utilize match_string() API ACPI: scan: Call acpi_get_object_info() from acpi_set_pnp_ids() ACPI: scan: Drop sta argument from acpi_init_device_object() ACPI: scan: Drop sta argument from acpi_add_single_object() ACPI: scan: Rearrange checks in acpi_bus_check_add() ACPI: scan: Fold acpi_bus_type_and_status() into its caller * acpi-drivers: ACPI: HED: Drop unused ACPI_MODULE_NAME() definition * acpi-pm: ACPI: power: Turn off unused power resources unconditionally ACPI: scan: Turn off unused power resources during initialization * acpi-resources: resource: Prevent irqresource_disabled() from erasing flags

Merge branch 'acpi-messages'

2021-04-26T15:03:22+00:00

* acpi-messages: hwmon: acpi_power_meter: Get rid of ACPICA message printing IIO: acpi-als: Get rid of ACPICA message printing ACPI: utils: Introduce acpi_evaluation_failure_warn() ACPI: Drop unused ACPI_*_COMPONENT definitions and update documentation ACPI: sysfs: Get rid of ACPICA message printing

Merge branches 'acpi-pci' and 'acpi-processor'

2021-04-26T15:03:05+00:00

* acpi-pci: ACPI: PCI: Replace direct printk() invocations in pci_link.c ACPI: PCI: Drop ACPI_PCI_COMPONENT that is not used any more ACPI: PCI: Replace ACPI_DEBUG_PRINT() and ACPI_EXCEPTION() ACPI: PCI: IRQ: Consolidate printing diagnostic messages * acpi-processor: ACPI: processor: perflib: Eliminate redundant status check ACPI: processor: Get rid of ACPICA message printing ACPI: processor: idle: Drop extra prefix from pr_notice() ACPI: processor: Remove initialization of static variable

ACPI: utils: Document for_each_acpi_dev_match() macro

2021-04-13T13:48:02+00:00

The macro requires to call acpi_dev_put() on each iteration. Due to this it doesn't tolerate sudden disappearence of the devices. Document all these nuances to prevent users blindly call it without understanding the possible issues. While at it, add the note to the acpi_dev_get_next_match_dev() and advertise acpi_dev_put() instead of put_device() in the whole family of the helper functions. Fixes: bf263f64e804 ("media: ACPI / bus: Add acpi_dev_get_next_match_dev() and helper macro") Signed-off-by: Andy Shevchenko Signed-off-by: Rafael J. Wysocki

ACPI: bus: Introduce acpi_dev_get() and reuse it in ACPI code

2021-04-13T13:41:11+00:00

Introduce acpi_dev_get() to have a symmetrical API with acpi_dev_put() and reuse both in ACPI code in drivers/acpi/. While at it, use acpi_bus_put_acpi_device() in one place instead of the above. Signed-off-by: Andy Shevchenko Signed-off-by: Rafael J. Wysocki

ACPI: utils: Add acpi_reduced_hardware() helper

2021-04-08T17:50:12+00:00

Add a getter for the acpi_gbl_reduced_hardware variable so that modules can check if they are running on an ACPI reduced-hw platform or not. Signed-off-by: Hans de Goede Signed-off-by: Rafael J. Wysocki

ACPICA: Update version to 20210331

2021-04-07T17:09:01+00:00

ACPICA commit eb423b7d5440472d0d2115cb81b52b1b7c56d95a Link: https://github.com/acpica/acpica/commit/eb423b7d Signed-off-by: Bob Moore Signed-off-by: Erik Kaneda Signed-off-by: Rafael J. Wysocki