pm: device_runtime: put_sync_locked: fix usage count on err

bjarki-andreasen · henrikbrixandersen · commit 682c83511346 · 2025-09-05T07:44:08.000+02:00
If pm action fails within put_sync_locked, usage count should be
reset to reflect the state of the device.

Signed-off-by: Bjarki Arge Andreasen &lt;bjarki.andreasen@nordicsemi.no&gt;
diff --git a/subsys/pm/device_runtime.c b/subsys/pm/device_runtime.c
@@ -321,6 +321,7 @@ static int put_sync_locked(const struct device *dev)
 	if (pm->base.usage == 0U) {
 		ret = pm->base.action_cb(dev, PM_DEVICE_ACTION_SUSPEND);
 		if (ret < 0) {
+			pm->base.usage++;
 			return ret;
 		}
 		pm->base.state = PM_DEVICE_STATE_SUSPENDED;

Original file line number	Diff line number	Diff line change
`@@ -321,6 +321,7 @@ static int put_sync_locked(const struct device *dev)`
`321`	`321`	`if (pm->base.usage == 0U) {`
`322`	`322`	`ret = pm->base.action_cb(dev, PM_DEVICE_ACTION_SUSPEND);`
`323`	`323`	`if (ret < 0) {`
	`324`	`+ pm->base.usage++;`
`324`	`325`	`return ret;`
`325`	`326`	`}`
`326`	`327`	`pm->base.state = PM_DEVICE_STATE_SUSPENDED;`