In a6xx_gpu_init(), node is obtained via of_parse_phandle().
While there was a manual of_node_put() at the end of the
common path, several early error returns would bypass this call,
resulting in a reference leak.
Fix this by using the __free(device_node) cleanup handler to
release the reference when the variable goes out of scope.
Fixes: 5a903a44a984 ("drm/msm/a6xx: Introduce GMU wrapper support")
Signed-off-by: Felix Gu <[email protected]>
---
drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index 2129d230a92b..0bc518d9fd65 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -2640,7 +2640,6 @@ static struct msm_gpu *a6xx_gpu_init(struct drm_device
*dev)
struct msm_drm_private *priv = dev->dev_private;
struct platform_device *pdev = priv->gpu_pdev;
struct adreno_platform_config *config = pdev->dev.platform_data;
- struct device_node *node;
struct a6xx_gpu *a6xx_gpu;
struct adreno_gpu *adreno_gpu;
struct msm_gpu *gpu;
@@ -2660,7 +2659,8 @@ static struct msm_gpu *a6xx_gpu_init(struct drm_device
*dev)
adreno_gpu->registers = NULL;
/* Check if there is a GMU phandle and set it up */
- node = of_parse_phandle(pdev->dev.of_node, "qcom,gmu", 0);
+ struct device_node *node __free(device_node) =
+ of_parse_phandle(pdev->dev.of_node, "qcom,gmu", 0);
/* FIXME: How do we gracefully handle this? */
BUG_ON(!node);
@@ -2702,7 +2702,6 @@ static struct msm_gpu *a6xx_gpu_init(struct drm_device
*dev)
ret = a6xx_gmu_wrapper_init(a6xx_gpu, node);
else
ret = a6xx_gmu_init(a6xx_gpu, node);
- of_node_put(node);
if (ret) {
a6xx_destroy(&(a6xx_gpu->base.base));
return ERR_PTR(ret);
---
base-commit: a0c666c25aeefd16f4b088c6549a6fb6b65a8a1d
change-id: 20260123-a6xx_gpu-cbc095dbe423
Best regards,
--
Felix Gu <[email protected]>
