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SubjectRe: [PATCH 1/2] drm/drm_file: fix use of uninitialized variable
On Fri, Aug 04, 2023 at 01:57:39PM +0300, Tomi Valkeinen wrote:
> smatch reports:
>
> drivers/gpu/drm/drm_file.c:967 drm_show_memory_stats() error: uninitialized symbol 'supported_status'.
>
> 'supported_status' is only set in one code path. I'm not familiar with
> the code to say if that path will always be ran in real life, but
> whether that is the case or not, I think it is good to initialize
> 'supported_status' to 0 to silence the warning (and possibly fix a bug).
>
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>

Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

> ---
> drivers/gpu/drm/drm_file.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/drm_file.c b/drivers/gpu/drm/drm_file.c
> index 883d83bc0e3d..cc06e1836bf5 100644
> --- a/drivers/gpu/drm/drm_file.c
> +++ b/drivers/gpu/drm/drm_file.c
> @@ -924,7 +924,7 @@ void drm_show_memory_stats(struct drm_printer *p, struct drm_file *file)
> {
> struct drm_gem_object *obj;
> struct drm_memory_stats status = {};
> - enum drm_gem_object_status supported_status;
> + enum drm_gem_object_status supported_status = 0;
> int id;
>
> spin_lock(&file->table_lock);
>

--
Regards,

Laurent Pinchart

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