[PATCH] drm/msm/dpu: Fix uninitialized variable

[Dmitry Baryshkov]

On Sun, Feb 09, 2025 at 10:32:33PM -0500, Ethan Carter Edwards wrote:
> There is a possibility for an uninitialized *ret* variable to be
> returned in some code paths.
> 
> Fix this by initializing *ret* to 0.
> 
> Addresses-Coverity-ID: 1642546 ("Uninitialized scalar variable")
> Fixes: 774bcfb731765d ("drm/msm/dpu: add support for virtual planes")
> Signed-off-by: Ethan Carter Edwards <ethan at ethancedwards.com>
> ---
>  drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
> index 098abc2c0003cde90ce6219c97ee18fa055a92a5..74edaa9ecee72111b70f32b832486aeebe545a28 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
> @@ -1164,7 +1164,7 @@ int dpu_assign_plane_resources(struct dpu_global_state *global_state,
>  			       unsigned int num_planes)
>  {
>  	unsigned int i;
> -	int ret;
> +	int ret = 0;

Thanks, but I think it better to make the function return ret from
within the loop and return explicit 0 if there was no error.

>  
>  	for (i = 0; i < num_planes; i++) {
>  		struct drm_plane_state *plane_state = states[i];
> 
> ---
> base-commit: a64dcfb451e254085a7daee5fe51bf22959d52d3
> change-id: 20250209-dpu-c3fac78fc617
> 
> Best regards,
> -- 
> Ethan Carter Edwards <ethan at ethancedwards.com>
> 

-- 
With best wishes
Dmitry