github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-31 10:33:41 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

ACPI: PM: Set/clear power.strict_midlayer in prepare/complete

Browse Source 
The ACPI general PM domain and the LPSS PM domain do not expect their
mid-layer runtime PM suspend callbacks to be invoked at all during
system-wide suspend and resume and they do not expect their runtime
resume callbacks to be invoked at any point when runtime PM is disabled
for the given device during system suspend and resume, so make
acpi_subsys_prepare() set power.strict_midlayer for the given device
to express that expectation and make acpi_subsys_complete() clear it.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://patch.msgid.link/4463062.ejJDZkT8p0@rjwysocki.net
This commit is contained in:
Rafael J. Wysocki 2025-06-27 21:25:22 +02:00
parent ffda4ca460
commit 325e3778ea
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/acpi/device_pm.c
View File

@ -1119,6 +1119,8 @@ int acpi_subsys_prepare(struct device *dev)
{
struct acpi_device *adev = ACPI_COMPANION(dev);
dev_pm_set_strict_midlayer(dev, true);
if (dev->driver && dev->driver->pm && dev->driver->pm->prepare) {
int ret = dev->driver->pm->prepare(dev);
@ -1147,6 +1149,8 @@ void acpi_subsys_complete(struct device *dev)
*/
if (pm_runtime_suspended(dev) && pm_resume_via_firmware())
pm_request_resume(dev);
dev_pm_set_strict_midlayer(dev, false);
}
EXPORT_SYMBOL_GPL(acpi_subsys_complete);