This is a note to let you know that I've just added the patch titled
drm/msm/gpu: Check the status of registration to PM QoS
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-msm-gpu-check-the-status-of-registration-to-pm-q.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 9652b5c72d941bad5aff38ca181c67ba7b76e998
Author: Lukasz Luba <lukasz.luba@xxxxxxx>
Date: Fri Oct 18 12:18:11 2024 +0100
drm/msm/gpu: Check the status of registration to PM QoS
[ Upstream commit 8f32ddd87e499ba6d2dc74ce30b6932baf1e1fc3 ]
There is a need to check the returned value of the registration function.
In case of returned error, print that and stop the init process.
Fixes: 7c0ffcd40b16 ("drm/msm/gpu: Respect PM QoS constraints")
Signed-off-by: Lukasz Luba <lukasz.luba@xxxxxxx>
Patchwork: https://patchwork.freedesktop.org/patch/620336/
Signed-off-by: Rob Clark <robdclark@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/msm/msm_gpu_devfreq.c b/drivers/gpu/drm/msm/msm_gpu_devfreq.c
index ae5380e2abf76..4e73b915fe1a2 100644
--- a/drivers/gpu/drm/msm/msm_gpu_devfreq.c
+++ b/drivers/gpu/drm/msm/msm_gpu_devfreq.c
@@ -140,6 +140,7 @@ void msm_devfreq_init(struct msm_gpu *gpu)
{
struct msm_gpu_devfreq *df = &gpu->devfreq;
struct msm_drm_private *priv = gpu->dev->dev_private;
+ int ret;
/* We need target support to do devfreq */
if (!gpu->funcs->gpu_busy)
@@ -147,8 +148,12 @@ void msm_devfreq_init(struct msm_gpu *gpu)
mutex_init(&df->lock);
- dev_pm_qos_add_request(&gpu->pdev->dev, &df->boost_freq,
- DEV_PM_QOS_MIN_FREQUENCY, 0);
+ ret = dev_pm_qos_add_request(&gpu->pdev->dev, &df->boost_freq,
+ DEV_PM_QOS_MIN_FREQUENCY, 0);
+ if (ret < 0) {
+ DRM_DEV_ERROR(&gpu->pdev->dev, "Couldn't initialize QoS\n");
+ return;
+ }
msm_devfreq_profile.initial_freq = gpu->fast_rate;
