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authorViken Dadhaniya <quic_vdadhani@quicinc.com>2024-04-30 12:12:38 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2024-05-03 08:30:32 +0300
commit98241a774db49988f25b7b3657026ce51ccec293 (patch)
tree7e4e53318df2444524fb162a439177b1f54dea13
parent00e7d3bea2ce7dac7bee1cf501fb071fd0ea8f6c (diff)
downloadlinux-98241a774db49988f25b7b3657026ce51ccec293.tar.xz
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: 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> 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>
-rw-r--r--drivers/slimbus/qcom-ngd-ctrl.c6
1 files changed, 5 insertions, 1 deletions
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);