On Tue, Sep 07, 2021 at 10:08:36AM -0400, Alex Xu (Hello71) wrote:
> drivers/gpu/drm/drm_plane_helper.c: In function 'drm_primary_helper_update':
> drivers/gpu/drm/drm_plane_helper.c:113:32: error: 'visible' is used uninitialized [-Werror=uninitialized]
> 113 | struct drm_plane_state plane_state = {
> | ^~~~~~~~~~~
> drivers/gpu/drm/drm_plane_helper.c:178:14: note: 'visible' was declared here
> 178 | bool visible;
> | ^~~~~~~
> cc1: all warnings being treated as errors
>
> visible is an output, not an input. in practice this use might turn out
> OK but it's still UB.
>
> Fixes: df86af9133 ("drm/plane-helper: Add drm_plane_helper_check_state()")
I need a signed-off-by from you before I can merge this. See
https://dri.freedesktop.org/docs/drm/process/submitting-patches.html#sign-your-work-the-developer-s-certificate-of-origin
Patch lgtm otherwise.
-Daniel
> ---
> drivers/gpu/drm/drm_plane_helper.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/drm_plane_helper.c b/drivers/gpu/drm/drm_plane_helper.c
> index 5b2d0ca03705..838b32b70bce 100644
> --- a/drivers/gpu/drm/drm_plane_helper.c
> +++ b/drivers/gpu/drm/drm_plane_helper.c
> @@ -123,7 +123,6 @@ static int drm_plane_helper_check_update(struct drm_plane *plane,
> .crtc_w = drm_rect_width(dst),
> .crtc_h = drm_rect_height(dst),
> .rotation = rotation,
> - .visible = *visible,
> };
> struct drm_crtc_state crtc_state = {
> .crtc = crtc,
> --
> 2.33.0
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
