plane->index is NOT the index of the color plane in a YUV frame. Actually, a YUV frame is represented by a single drm_plane, even though it contains three Y, U, V planes.

Cc: stable@vger.kernel.org # v5.3 Fixes: 90b86fcc47b4 ("DRM: Add KMS driver for the Ingenic JZ47xx SoCs") Signed-off-by: Paul Cercueil paul@crapouillou.net --- drivers/gpu/drm/ingenic/ingenic-drm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/ingenic/ingenic-drm.c b/drivers/gpu/drm/ingenic/ingenic-drm.c index 97244462599b..3207105755c9 100644 --- a/drivers/gpu/drm/ingenic/ingenic-drm.c +++ b/drivers/gpu/drm/ingenic/ingenic-drm.c @@ -386,7 +386,7 @@ static void ingenic_drm_plane_atomic_update(struct drm_plane *plane, addr = drm_fb_cma_get_gem_addr(state->fb, state, 0); width = state->src_w >> 16; height = state->src_h >> 16; - cpp = state->fb->format->cpp[plane->index]; + cpp = state->fb->format->cpp[0];

priv->dma_hwdesc->addr = addr; priv->dma_hwdesc->cmd = width * height * cpp / 4;