This is a note to let you know that I've just added the patch titled
drm/msm/adreno: Assign msm_gpu->pdev earlier to avoid nullptrs
to the 6.11-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-adreno-assign-msm_gpu-pdev-earlier-to-avoid-.patch
and it can be found in the queue-6.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit a16a99e004ebeceb50141ce0af8c7b262337dee4
Author: Konrad Dybcio <konradybcio@xxxxxxxxxx>
Date: Tue Jul 9 13:15:40 2024 +0200
drm/msm/adreno: Assign msm_gpu->pdev earlier to avoid nullptrs
[ Upstream commit 16007768551d5bfe53426645401435ca8d2ef54f ]
There are some cases, such as the one uncovered by Commit 46d4efcccc68
("drm/msm/a6xx: Avoid a nullptr dereference when speedbin setting fails")
where
msm_gpu_cleanup() : platform_set_drvdata(gpu->pdev, NULL);
is called on gpu->pdev == NULL, as the GPU device has not been fully
initialized yet.
Turns out that there's more than just the aforementioned path that
causes this to happen (e.g. the case when there's speedbin data in the
catalog, but opp-supported-hw is missing in DT).
Assigning msm_gpu->pdev earlier seems like the least painful solution
to this, therefore do so.
Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
Patchwork: https://patchwork.freedesktop.org/patch/602742/
Signed-off-by: Rob Clark <robdclark@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index 3896123ec51c9..83caca2c4026a 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -1083,6 +1083,7 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev,
adreno_gpu->chip_id = config->chip_id;
gpu->allow_relocs = config->info->family < ADRENO_6XX_GEN1;
+ gpu->pdev = pdev;
/* Only handle the core clock when GMU is not in use (or is absent). */
if (adreno_has_gmu_wrapper(adreno_gpu) ||
diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index 3666b42b4ecd7..a274b84664237 100644
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -931,7 +931,6 @@ int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev,
if (IS_ERR(gpu->gpu_cx))
gpu->gpu_cx = NULL;
- gpu->pdev = pdev;
platform_set_drvdata(pdev, &gpu->adreno_smmu);
msm_devfreq_init(gpu);
