Messages in this thread Patch in this message | | | From | Mathieu Poirier <> | Subject | [PATCH v3 02/15] remoteproc: Re-check state in rproc_shutdown() | Date | Thu, 26 Nov 2020 14:06:29 -0700 |
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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@vger.kernel.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Reviewed-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Arnaud Pouliquen <arnaud.pouliquen@st.com> --- 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 46c2937ebea9..e8b901f34c91 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -1857,6 +1857,9 @@ 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
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