remoteproc: core: Do pm_relax when in RPROC_OFFLINE state

commit 11c7f9e313 upstream.

Make sure that pm_relax() happens even when the remoteproc
is stopped before the crash handler work is scheduled.

Signed-off-by: Maria Yu <quic_aiquny@quicinc.com>
Cc: stable <stable@vger.kernel.org>
Fixes: a781e5aa59 ("remoteproc: core: Prevent system suspend during remoteproc recovery")
Link: https://lore.kernel.org/r/20221206015957.2616-2-quic_aiquny@quicinc.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/remoteproc/remoteproc_core.c

@@ -1955,12 +1955,18 @@ static void rproc_crash_handler_work(struct work_struct *work)
 
 	mutex_lock(&rproc->lock);
 
-	if (rproc->state == RPROC_CRASHED || rproc->state == RPROC_OFFLINE) {
+	if (rproc->state == RPROC_CRASHED) {
 		/* handle only the first crash detected */
 		mutex_unlock(&rproc->lock);
 		return;
 	}
 
+	if (rproc->state == RPROC_OFFLINE) {
+		/* Don't recover if the remote processor was stopped */
+		mutex_unlock(&rproc->lock);
+		goto out;
+	}
+
 	rproc->state = RPROC_CRASHED;
 	dev_err(dev, "handling crash #%u in %s\n", ++rproc->crash_cnt,
 		rproc->name);
@@ -1970,6 +1976,7 @@ static void rproc_crash_handler_work(struct work_struct *work)
 	if (!rproc->recovery_disabled)
 		rproc_trigger_recovery(rproc);
 
+out:
 	pm_relax(rproc->dev.parent);
 }