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

[Abhinav Kumar]

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 at huawei.com>
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
> Reviewed-by: Abhinav Kumar <quic_abhinavk at quicinc.com>
> Reviewed-by: Akhil P Oommen <quic_akhilpo at quicinc.com>
> ---
>   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++) {