Hi,
On 9/16/2022 12:42 PM, Maria Yu wrote:
RPROC_OFFLINE state indicate there is no recovery process
is in progress and no chance to do the pm_relax.
Because when recovering from crash, rproc->lock is held and
state is RPROC_CRASHED -> RPROC_OFFLINE -> RPROC_RUNNING,
and then unlock rproc->lock.
When the state is in RPROC_OFFLINE it means separate request
of rproc_stop was done and no need to hold the wakeup source
in crash handler to recover any more.
Signed-off-by: Maria Yu <quic_aiquny@xxxxxxxxxxx>
---
drivers/remoteproc/remoteproc_core.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index e5279ed9a8d7..6bc7b8b7d01e 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -1956,6 +1956,17 @@ static void rproc_crash_handler_work(struct work_struct *work)
if (rproc->state == RPROC_CRASHED || rproc->state == RPROC_OFFLINE) {
/* handle only the first crash detected */
mutex_unlock(&rproc->lock);
+ /*
+ * RPROC_OFFLINE state indicate there is no recovery process
+ * is in progress and no chance to have pm_relax in place.
+ * Because when recovering from crash, rproc->lock is held and
+ * state is RPROC_CRASHED -> RPROC_OFFLINE -> RPROC_RUNNING,
+ * and then unlock rproc->lock.
+ * RPROC_OFFLINE is only an intermediate state in recovery
+ * process.
+ */
+ if (rproc->state == RPROC_OFFLINE)
+ pm_relax(rproc->dev.parent);
LGTM.
Reviewed-by: Mukesh Ojha <quic_mojha@xxxxxxxxxxx>
-Mukesh
return;
}
