remoteproc: qcom: q6v5: Update running state before requesting stop

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: 3b415c8f ("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.orgSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

drivers/remoteproc/qcom_q6v5.c

@@ -153,6 +153,8 @@ int qcom_q6v5_request_stop(struct qcom_q6v5 *q6v5)
 {
 	int ret;
 
+	q6v5->running = false;
+
 	qcom_smem_state_update_bits(q6v5->state,
 				    BIT(q6v5->stop_bit), BIT(q6v5->stop_bit));