Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-01 16:41:39 +00:00
Code Issues Packages Projects Releases Wiki Activity
520c2286c2
linux/drivers/acpi
History
Rafael J. Wysocki 520c2286c2 ACPI: scan: Rework Device Check and Bus Check notification handling 
The underlying problem is the handling of the enabled bit in device
status (bit 1 of _STA return value) which is required by the ACPI
specification to be observed in addition to the present bit (bit 0
of _STA return value) [1], but Linux does not observe it.

Since Linux has not looked at that bit for a long time, it is generally
risky to start obseving it in all device enumeration cases, especially
at the system initialization time, but it can be observed when the
kernel receives a Bus Check or Device Check notification indicating a
change in device configuration.  In those cases, seeing the enabled bit
clear may be regarded as an indication that the device at hand should
not be used any more.

For this reason, rework the handling of Device Check and Bus Check
notifications in the ACPI core device enumeration code in the
following way:

 1. Rename acpi_bus_trim_one() to acpi_scan_check_and_detach() and make
    it check device status if its second argument is not NULL, in which
    case it will detach scan handlers or ACPI drivers from devices whose
    _STA returns the enabled bit clear.

 2. Make acpi_scan_device_check() and acpi_scan_bus_check() invoke
    acpi_scan_check_and_detach() with a non-NULL second argument
    unconditionally, so scan handlers and ACPI drivers are detached
    from the target device and its ancestors if their _STA returns the
    enabled bit clear.

Link: https://uefi.org/specs/ACPI/6.5/06_Device_Configuration.html#sta-device-status # [1]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2024-02-27 17:54:59 +01:00
..
acpica ACPICA: Add AML_NO_OPERAND_RESOLVE flag to Timer 2023-07-10 18:49:16 +02:00
apei cxl/cper: Fix errant CPER prints for CXL events 2024-02-03 18:31:17 +01:00
arm64 ACPI: arm64: export acpi_arch_thermal_cpufreq_pctg() 2023-12-13 13:53:01 +01:00
dptf ACPI: DPTF: Drop stale link from Kconfig help 2022-09-28 17:26:25 +02:00
nfit acpi/nfit: Use sysfs_emit() for all attributes 2024-01-03 12:21:37 -08:00
numa cxl for v6.8 2024-01-18 16:22:43 -08:00
pmic ACPI: PMIC: Add comments with DSDT power opregion field names 2023-01-30 16:47:13 +01:00
riscv RISC-V: ACPI: RHCT: Add function to get CBO block sizes 2023-10-26 09:40:33 -07:00
x86 Merge branches 'acpi-ec', 'acpi-sysfs', 'acpi-misc' and 'acpi-uid' 2023-10-26 14:59:52 +02:00
ac.c ACPI: AC: Rename ACPI device from device to adev 2023-10-17 15:43:30 +02:00
acpi_adxl.c
acpi_apd.c ACPI: processor: Check for null return of devm_kzalloc() in fch_misc_setup() 2023-03-20 18:04:58 +01:00
acpi_cmos_rtc.c ACPI: TAD: Install SystemCMOS address space handler for ACPI000E 2023-08-17 20:01:24 +02:00
acpi_configfs.c
acpi_dbg.c
acpi_extlog.c ACPI: extlog: Clear Extended Error Log status when RAS_CEC handled the error 2023-12-13 13:50:00 +01:00
acpi_ffh.c ACPI: FFH: Drop the inclusion of linux/arm-smccc.h 2023-06-12 19:28:20 +02:00
acpi_fpdt.c ACPI: FPDT: properly handle invalid FPDT subtables 2023-10-03 21:12:22 +02:00
acpi_ipmi.c ACPI: IPMI: replace usage of found with dedicated list iterator variable 2022-03-25 18:01:40 +01:00
acpi_lpat.c
acpi_lpit.c ACPI: LPIT: Avoid u32 multiplication overflow 2023-11-22 20:55:20 +01:00
acpi_lpss.c Merge branches 'acpi-resource', 'acpi-numa', 'acpi-soc' and 'acpi-misc' 2024-01-04 13:23:31 +01:00
acpi_memhotplug.c mm/memory_hotplug: allow memmap on memory hotplug request to fallback 2023-08-21 13:37:48 -07:00
acpi_pad.c Many singleton patches against the MM code. The patch series which are 2023-11-02 19:38:47 -10:00
acpi_pcc.c ACPI: PCC: Setup PCC Opregion handler only if platform interrupt is available 2022-11-23 19:06:56 +01:00
acpi_platform.c ACPI: platform: Move SMB0001 HID to the header and reuse 2023-07-04 19:28:20 +02:00
acpi_pnp.c ACPI: PNP: Introduce list of known non-PNP devices 2023-01-17 12:52:11 +01:00
acpi_processor.c ACPI: scan: Make acpi_processor_add() check the device enabled bit 2024-02-27 17:54:59 +01:00
acpi_tad.c ACPI: TAD: Install SystemCMOS address space handler for ACPI000E 2023-08-17 20:01:24 +02:00
acpi_video.c ACPI: video: Add quirk for the Colorful X15 AT 23 Laptop 2023-12-06 20:59:49 +01:00
acpi_watchdog.c ACPI: watchdog: fix kernel-doc warnings 2023-12-12 20:27:20 +01:00
battery.c ACPI: bus: Add context argument to acpi_dev_install_notify_handler() 2023-10-06 17:32:51 +02:00
bgrt.c ACPI: BGRT: use static for BGRT_SHOW kobj_attribute defines 2022-04-22 16:55:33 +02:00
blacklist.c
bus.c ACPI: Run USB4 _OSC() first with query bit set 2023-11-20 17:52:31 +01:00
button.c ACPI: button: trigger wakeup key events 2023-12-29 18:47:49 +01:00
container.c ACPI: container: Use acpi_dev_for_each_child() 2022-06-20 20:33:05 +02:00
cppc_acpi.c cpufreq/cppc: Move and rename cppc_cpufreq_{perf_to_khz|khz_to_perf}() 2023-12-23 15:52:35 +01:00
custom_method.c
debugfs.c
device_pm.c ACPI: PM: Add acpi_device_fix_up_power_children() function 2023-11-20 17:31:49 +01:00
device_sysfs.c Merge branches 'acpi-ec', 'acpi-sysfs', 'acpi-misc' and 'acpi-uid' 2023-10-26 14:59:52 +02:00
dock.c ACPI: Use acpi_fetch_acpi_dev() instead of acpi_bus_get_device() 2021-12-17 18:45:51 +01:00
ec_sys.c ACPI: EC: Mark the ec_sys write_support param as module_param_hw() 2021-12-01 20:19:30 +01:00
ec.c ACPI: EC: Use a spin lock without disabing interrupts 2023-12-28 14:13:52 +01:00
event.c
evged.c
fan_attr.c ACPI: fan: Convert to use sysfs_emit_at() API 2022-12-06 12:44:14 +01:00
fan_core.c ACPI: fan: Bail out if extract package failed 2022-11-23 19:31:57 +01:00
fan.h ACPI: DPTF: Support Meteor Lake 2022-05-25 15:37:07 +02:00
glue.c ACPI: Fix selecting wrong ACPI fwnode for the iGPU on some Dell laptops 2023-01-10 20:23:48 +01:00
hed.c ACPI: bus: Add context argument to acpi_dev_install_notify_handler() 2023-10-06 17:32:51 +02:00
internal.h ACPI: scan: Make acpi_processor_add() check the device enabled bit 2024-02-27 17:54:59 +01:00
ioapic.c ACPI: Silence missing prototype warnings 2022-12-30 19:12:30 +01:00
irq.c ACPI: irq: Fix incorrect return value in acpi_register_gsi() 2023-10-18 13:11:04 +02:00
Kconfig Driver core changes for 6.8-rc1 2024-01-18 09:48:40 -08:00
Makefile Merge branch 'acpi-thermal' 2024-01-04 13:01:51 +01:00
mipi-disco-img.c ACPI: scan: Fix an error message in DisCo for Imaging support 2023-11-21 15:09:23 +01:00
nvs.c
osi.c ACPI: OSI: refactor deprecated strncpy() 2023-09-21 20:55:43 +02:00
osl.c ACPI: OSL: Use spin locks without disabling interrupts 2023-12-28 14:13:52 +01:00
pci_irq.c ACPI / PCI: fix LPIC IRQ model default PCI IRQ polarity 2022-11-26 12:57:18 +00:00
pci_link.c ACPI/PCI: Remove useless NULL pointer checks 2022-07-27 21:21:27 +02:00
pci_mcfg.c PCI: loongson: Add ACPI init support 2022-07-14 15:25:36 -05:00
pci_root.c ACPI: PCI: Switch to use acpi_evaluate_dsm_typed() 2023-10-03 15:46:14 +02:00
pci_slot.c
pfr_telemetry.c mm: replace vma->vm_flags direct modifications with modifier calls 2023-02-09 16:51:39 -08:00
pfr_update.c iov_iter work; most of that is about getting rid of 2022-12-12 18:29:54 -08:00
platform_profile.c
power.c ACPI: PM: Do not turn of unused power resources on the Toshiba Click Mini 2023-04-27 18:44:43 +02:00
pptt.c ACPI: PPTT: Fix to avoid sleep in the atomic context when PPTT is absent 2023-03-14 20:34:38 +01:00
prmt.c ACPI: PRM: Annotate struct prm_module_info with __counted_by 2023-10-03 21:24:10 +02:00
proc.c proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
processor_core.c arm64, irqchip/gic-v3, ACPI: Move MADT GICC enabled check into a helper 2023-10-24 15:12:09 +01:00
processor_driver.c ACPI: processor: Reorder acpi_processor_driver_init() 2023-03-22 15:20:38 +01:00
processor_idle.c ACPI: processor_idle: use raw_safe_halt() in acpi_idle_play_dead() 2023-11-20 17:26:20 +01:00
processor_pdc.c ACPI: processor: Fix uninitialized access of buf in acpi_set_pdc_bits() 2023-09-18 12:16:16 +02:00
processor_perflib.c ACPI: processor: perflib: Avoid updating frequency QoS unnecessarily 2022-12-30 19:10:02 +01:00
processor_thermal.c ACPI: processor: reduce CPUFREQ thermal reduction pctg for Tegra241 2023-12-06 20:52:47 +01:00
processor_throttling.c ACPI: processor: throttling: remove variable count 2022-10-28 19:02:45 +02:00
property.c Driver core changes for 6.8-rc1 2024-01-18 09:48:40 -08:00
reboot.c
resource.c ACPI: resource: Skip IRQ override on ASUS ExpertBook B1502CGA 2024-01-09 15:20:48 +01:00
sbs.c ACPI: SBS: Fix handling of Smart Battery Selectors 2023-03-30 19:01:05 +02:00
sbshc.c ACPI: make remove callback of ACPI driver void 2022-11-23 19:11:22 +01:00
sbshc.h
scan.c ACPI: scan: Rework Device Check and Bus Check notification handling 2024-02-27 17:54:59 +01:00
sleep.c Merge branches 'acpi-scan', 'acpi-pm', 'acpi-resource' and 'acpi-ec' 2023-06-26 16:54:10 +02:00
sleep.h ACPI: s2idle: Add a new ->check() callback for platform_s2idle_ops 2022-09-09 17:37:40 +02:00
spcr.c ACPI: SPCR: Amend indentation 2023-03-27 20:50:28 +02:00
sysfs.c ACPI: sysfs: Enable ACPI sysfs support for CCEL records 2023-03-27 20:43:58 +02:00
tables.c lib/firmware_table: tables: Add CDAT table parsing support 2023-12-22 14:23:13 -08:00
thermal_lib.c ACPI: thermal_lib: include "internal.h" for function prototypes 2023-11-24 19:26:49 +01:00
thermal.c Thermal control updates for 6.8-rc1 2024-01-09 16:20:17 -08:00
tiny-power-button.c ACPI: tiny-power-button: Eliminate the driver notify callback 2023-06-16 19:48:09 +02:00
utils.c ACPI: utils: Introduce helper for _DEP list lookup 2023-12-19 18:25:00 +01:00
video_detect.c ACPI: video: Add acpi_backlight=vendor quirk for Toshiba Portégé R100 2023-10-03 20:33:58 +02:00
viot.c ACPI: VIOT: Initialize the correct IOMMU fwspec 2023-03-30 19:20:42 +02:00
wakeup.c