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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-08-01 01:31:08 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-08-01 23:39:17 +0200 |
| commit | 42787ed79638dc7f0f8d5c164caba1e87bfab50f (patch) | |
| tree | 820e3d26cac6f1e699c4bdd709de7c4d05b17915 /include/trace/events/sunrpc.h | |
| parent | 609488bc979f99f805f34e9a32c1e3b71179d10b (diff) | |
ACPI: PM: Fix regression in acpi_device_set_power()
Commit f850a48a0799 ("ACPI: PM: Allow transitions to D0 to occur in
special cases") overlooked the fact that acpi_power_transition() may
change the power.state value for the target device and if that
happens, it may confuse acpi_device_set_power() and cause it to
omit the _PS0 evaluation which on some systems is necessary to
change power states of devices from low-power to D0.
Fix that by saving the current value of power.state for the
target device before passing it to acpi_power_transition() and
using the saved value in a subsequent check.
Fixes: f850a48a0799 ("ACPI: PM: Allow transitions to D0 to occur in special cases")
Reported-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Reported-by: Mario Limonciello <mario.limonciello@dell.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Tested-by: Mario Limonciello <mario.limonciello@dell.com>
Diffstat (limited to 'include/trace/events/sunrpc.h')
0 files changed, 0 insertions, 0 deletions