The state of the remote processor may have changed between the time a call to rproc_shutdown() was made and the time it is executed. To avoid moving forward with an operation that may have been cancelled, recheck while holding the mutex. Cc: <stable@xxxxxxxxxxxxxxx> Signed-off-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx> --- drivers/remoteproc/remoteproc_core.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index 7f90eeea67e2..fb2632cbd2df 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -1834,6 +1834,9 @@ void rproc_shutdown(struct rproc *rproc) return; } + if (rproc->state != RPROC_RUNNING) + goto out; + /* if the remote proc is still needed, bail out */ if (!atomic_dec_and_test(&rproc->power)) goto out; -- 2.25.1
