diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2021-11-04 22:54:17 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2021-11-05 15:43:47 +0100 |
| commit | 452a3e723f75880757acf87b053935c43aa89f89 (patch) | |
| tree | c88f81cb77e637ee3c39c98272158f304b9dd6fd /drivers/acpi/power.c | |
| parent | c0d6586afa3546a3d148cf4b9d9a407b4f79d0bb (diff) | |
ACPI: PM: Fix device wakeup power reference counting error
Fix a device wakeup power reference counting error introduced by
commit a2d7b2e004af ("ACPI: PM: Fix sharing of wakeup power
resources") because of a coding mistake.
Fixes: a2d7b2e004af ("ACPI: PM: Fix sharing of wakeup power resources")
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/power.c')
| -rw-r--r-- | drivers/acpi/power.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c index 112256154880..5dcb02ededbc 100644 --- a/drivers/acpi/power.c +++ b/drivers/acpi/power.c @@ -757,13 +757,11 @@ int acpi_disable_wakeup_device_power(struct acpi_device *dev) mutex_lock(&acpi_device_lock); - if (dev->wakeup.prepare_count > 1) { - dev->wakeup.prepare_count--; + /* Do nothing if wakeup power has not been enabled for this device. */ + if (dev->wakeup.prepare_count <= 0) goto out; - } - /* Do nothing if wakeup power has not been enabled for this device. */ - if (!dev->wakeup.prepare_count) + if (--dev->wakeup.prepare_count > 0) goto out; err = acpi_device_sleep_wake(dev, 0, 0, 0); |