Re: [PATCH v3 2/3] drm/msm: Fix IS_ERR() vs NULL check in a5xx_submit_in_rb()

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On 7/13/2023 6:48 PM, Gaosheng Cui wrote:
The msm_gem_get_vaddr() returns an ERR_PTR() on failure, we should
use IS_ERR() to check the return value.


use IS_ERR_OR_NULL()

I can even fix this while applying

Fixes: 6a8bd08d0465 ("drm/msm: add sudo flag to submit ioctl")
Signed-off-by: Gaosheng Cui <cuigaosheng1@xxxxxxxxxx>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Reviewed-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
Reviewed-by: Akhil P Oommen <quic_akhilpo@xxxxxxxxxxx>
---
  drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
index a99310b68793..bbb1bf33f98e 100644
--- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
@@ -89,7 +89,7 @@ static void a5xx_submit_in_rb(struct msm_gpu *gpu, struct msm_gem_submit *submit
  			 * since we've already mapped it once in
  			 * submit_reloc()
  			 */
-			if (WARN_ON(!ptr))
+			if (WARN_ON(IS_ERR_OR_NULL(ptr)))
  				return;
for (i = 0; i < dwords; i++) {



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