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From: Sibi Sankar <sibis@codeaurora.org>
To: bjorn.andersson@linaro.org
Cc: agross@kernel.org, linux-arm-msm@vger.kernel.org,
	linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org,
	evgreen@chromium.org, ohad@wizery.com, rohitkr@codeaurora.org,
	Sibi Sankar <sibis@codeaurora.org>,
	stable@vger.kernel.org
Subject: [PATCH 1/2] remoteproc: qcom: q6v5: Update running state before requesting stop
Date: Tue,  2 Jun 2020 22:02:56 +0530
Message-ID: <20200602163257.26978-1-sibis@codeaurora.org> (raw)

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

Fixes: 3b415c8fb263 ("remoteproc: q6v5: Extract common resource handling")
Cc: stable@vger.kernel.org
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
---
 drivers/remoteproc/qcom_q6v5.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/remoteproc/qcom_q6v5.c b/drivers/remoteproc/qcom_q6v5.c
index 111a442c993c4..fd6fd36268d93 100644
--- a/drivers/remoteproc/qcom_q6v5.c
+++ b/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));
 
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project


             reply index

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-02 16:32 Sibi Sankar [this message]
2020-06-02 16:32 ` [PATCH 2/2] remoteproc: qcom_q6v5_mss: Remove redundant running state Sibi Sankar
2020-06-02 17:39   ` Evan Green
2020-07-28  6:20   ` Bjorn Andersson
2020-06-02 17:44 ` [PATCH 1/2] remoteproc: qcom: q6v5: Update running state before requesting stop Evan Green
2020-06-03  5:29   ` Sibi Sankar
2020-06-03 22:33     ` Evan Green
2020-06-04 18:50       ` Sibi Sankar
2020-07-28  6:19       ` Bjorn Andersson

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