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Code Issues Releases Wiki Activity

slimbus: qcom-ngd-ctrl: Add timeout for wait operation 

In current driver qcom_slim_ngd_up_worker() indefinitely
waiting for ctrl->qmi_up completion object. This is
resulting in workqueue lockup on Kthread.

Added wait_for_completion_interruptible_timeout to
allow the thread to wait for specific timeout period and
bail out instead waiting infinitely.

Fixes: a899d32486 ("slimbus: qcom-ngd-ctrl: add Sub System Restart support")
Cc: stable@vger.kernel.org
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Viken Dadhaniya <quic_vdadhani@quicinc.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20240430091238.35209-2-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Viken Dadhaniya 2024-04-30 10:12:38 +01:00 committed by Greg Kroah-Hartman
parent 00e7d3bea2
commit 98241a774d
1 changed files with 5 additions and 1 deletions
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6
drivers/slimbus/qcom-ngd-ctrl.c
View File

@ -1451,7 +1451,11 @@ static void qcom_slim_ngd_up_worker(struct work_struct *work)
ctrl = container_of(work, struct qcom_slim_ngd_ctrl, ngd_up_work);
/* Make sure qmi service is up before continuing */
wait_for_completion_interruptible(&ctrl->qmi_up);
if (!wait_for_completion_interruptible_timeout(&ctrl->qmi_up,
msecs_to_jiffies(MSEC_PER_SEC))) {
dev_err(ctrl->dev, "QMI wait timeout\n");
return;
}
mutex_lock(&ctrl->ssr_lock);
qcom_slim_ngd_enable(ctrl, true);