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-yo...

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