From: Maria Yu quic_aiquny@quicinc.com
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 --- drivers/remoteproc/remoteproc_core.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
--- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -1954,12 +1954,18 @@ static void rproc_crash_handler_work(str
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(str if (!rproc->recovery_disabled) rproc_trigger_recovery(rproc);
+out: pm_relax(rproc->dev.parent); }