[PATCH v2 1/8] drm/msm/adreno: Fix invalid drvdata typecast in adreno_remove()

[Akhil P Oommen]

adreno_remove() decides between component_del() and msm_gpu_remove()
based on platform_get_drvdata(pdev), interpreted as a struct
msm_drm_private *. That dereference is wrong because msm_gpu_init()
overwrites the GPU pdev's drvdata with adreno_smmu_priv pointer.
Use an alternate check similar to adreno_probe() that avoids this.

Fixes: 643515a9cd09 ("drm/msm: rework binding of Imageon GPUs")
Signed-off-by: Akhil P Oommen <akhilpo@xxxxxxxxxxxxxxxx>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/msm/adreno/adreno_device.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
index 7108d4aa59b5..1798bb12805a 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_device.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
@@ -282,12 +282,13 @@ static int adreno_probe(struct platform_device *pdev)
 
 static void adreno_remove(struct platform_device *pdev)
 {
-	struct msm_drm_private *priv = platform_get_drvdata(pdev);
+	struct device_node *node = pdev->dev.of_node;
 
-	if (priv->kms_init)
-		component_del(&pdev->dev, &a3xx_ops);
-	else
+	if (of_device_is_compatible(node, "amd,imageon") ||
+	    (msm_separate_gpu_kms_components() && adreno_has_gpu(node)))
 		msm_gpu_remove(pdev, &a3xx_ops);
+	else
+		component_del(&pdev->dev, &a3xx_ops);
 }
 
 static void adreno_shutdown(struct platform_device *pdev)

-- 
2.55.0