diff mbox series

[v2] slimbus: qcom-ngd-ctrl: Add timeout for wait operation

Message ID 20240306091642.9123-1-quic_vdadhani@quicinc.com (mailing list archive)
State Not Applicable
Headers show
Series [v2] slimbus: qcom-ngd-ctrl: Add timeout for wait operation | expand

Commit Message

Viken Dadhaniya March 6, 2024, 9:16 a.m. UTC
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: a899d324863a ("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>
---
v1 -> v2:
- Remove macro and add value inline.
- add fix, cc and review tag.
---
---
 drivers/slimbus/qcom-ngd-ctrl.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

Comments

Srinivas Kandagatla April 11, 2024, 9:55 a.m. UTC | #1
On Wed, 06 Mar 2024 14:46:42 +0530, Viken Dadhaniya wrote:
> 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.
> 
> [...]

Applied, thanks!

[1/1] slimbus: qcom-ngd-ctrl: Add timeout for wait operation
      commit: b12bd525ca6e06c5ba93a49904f580f7f0021cbd

Best regards,
diff mbox series

Patch

diff --git a/drivers/slimbus/qcom-ngd-ctrl.c b/drivers/slimbus/qcom-ngd-ctrl.c
index efeba8275a66..a09a26bf4988 100644
--- a/drivers/slimbus/qcom-ngd-ctrl.c
+++ b/drivers/slimbus/qcom-ngd-ctrl.c
@@ -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);