[PATCH] drm/msm/adreno: Add a null pointer check to the zap_shader_load_mdt

[Kunwu Chan]

kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure. Ensure the allocation was successful
by checking the pointer validity.

Signed-off-by: Kunwu Chan <chentao at kylinos.cn>
---
 drivers/gpu/drm/msm/adreno/adreno_gpu.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index 074fb498706f..7e79ead4fe00 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -144,6 +144,10 @@ static int zap_shader_load_mdt(struct msm_gpu *gpu, const char *fwname,
 		char *newname;
 
 		newname = kasprintf(GFP_KERNEL, "qcom/%s", fwname);
+		if (!newname) {
+			ret = -ENOMEM;
+			goto out;
+		}
 
 		ret = qcom_mdt_load(dev, fw, newname, pasid,
 				mem_region, mem_phys, mem_size, NULL);
-- 
2.39.2