From: Maria Yu <quic_aiquny@quicinc.com>
Date: Tue, 6 Dec 2022 01:59:57 +0000 (+0800)
Subject: remoteproc: core: Do pm_relax when in RPROC_OFFLINE state
X-Git-Tag: v6.0.18~60
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=758fdc33a1d89f3c296b03af55c8c019cf27bd89;p=thirdparty%2Fkernel%2Fstable.git

remoteproc: core: Do pm_relax when in RPROC_OFFLINE state

commit 11c7f9e3131ad14b27a957496088fa488b153a48 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: a781e5aa5911 ("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>
---

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 4fc5ce2187ac8..3f5458372b783 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -1954,12 +1954,18 @@ 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);
@@ -1969,6 +1975,7 @@ static void rproc_crash_handler_work(struct work_struct *work)
 	if (!rproc->recovery_disabled)
 		rproc_trigger_recovery(rproc);
 
+out:
 	pm_relax(rproc->dev.parent);
 }