6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lukasz Luba <lukasz.luba@xxxxxxx>
[ 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>
---
drivers/gpu/drm/msm/msm_gpu_devfreq.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/msm/msm_gpu_devfreq.c b/drivers/gpu/drm/msm/msm_gpu_devfreq.c
index ea70c1c32d940..6970b0f7f457c 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)
@@ -156,8 +157,12 @@ 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;
--
2.43.0
