drm/vc4: plane: check drm_gem_plane_helper_prepare_fb() return value

Bubble up any error to the caller.

Signed-off-by: Simon Ser <contact@emersion.fr>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Dave Stevenson <dave.stevenson@raspberrypi.com>
Reviewed-by: Maíra Canal <mcanal@igalia.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231216141518.242811-1-contact@emersion.fr

diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c
index 00e713faecd5acf1e6e79f618da534c82aba72ba..b8184374332ce7e0ef609ade39604f9302c2e060 100644 (file)
--- a/drivers/gpu/drm/vc4/vc4_plane.c
+++ b/drivers/gpu/drm/vc4/vc4_plane.c
@@ -1497,13 +1497,16 @@ static int vc4_prepare_fb(struct drm_plane *plane,
                          struct drm_plane_state *state)
 {
        struct vc4_bo *bo;
+       int ret;
 
        if (!state->fb)
                return 0;
 
        bo = to_vc4_bo(&drm_fb_dma_get_gem_obj(state->fb, 0)->base);
 
-       drm_gem_plane_helper_prepare_fb(plane, state);
+       ret = drm_gem_plane_helper_prepare_fb(plane, state);
+       if (ret)
+               return ret;
 
        if (plane->state->fb == state->fb)
                return 0;