From: Sibi Sankar sibis@codeaurora.org
commit 5b7be880074c73540948f8fc597e0407b98fabfa upstream.
Sometimes the stop triggers a watchdog rather than a stop-ack. Update the running state to false on requesting stop to skip the watchdog instead.
Error Logs: $ echo stop > /sys/class/remoteproc/remoteproc0/state ipa 1e40000.ipa: received modem stopping event remoteproc-modem: watchdog received: sys_m_smsm_mpss.c:291:APPS force stop qcom-q6v5-mss 4080000.remoteproc-modem: port failed halt ipa 1e40000.ipa: received modem offline event remoteproc0: stopped remote processor 4080000.remoteproc-modem
Reviewed-by: Evan Green evgreen@chromium.org Fixes: 3b415c8fb263 ("remoteproc: q6v5: Extract common resource handling") Cc: stable@vger.kernel.org Signed-off-by: Sibi Sankar sibis@codeaurora.org Link: https://lore.kernel.org/r/20200602163257.26978-1-sibis@codeaurora.org Signed-off-by: Bjorn Andersson bjorn.andersson@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/remoteproc/qcom_q6v5.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/remoteproc/qcom_q6v5.c +++ b/drivers/remoteproc/qcom_q6v5.c @@ -151,6 +151,8 @@ int qcom_q6v5_request_stop(struct qcom_q { int ret;
+ q6v5->running = false; + qcom_smem_state_update_bits(q6v5->state, BIT(q6v5->stop_bit), BIT(q6v5->stop_bit));