[PATCH 5.7 098/204] drm/ingenic: Fix incorrect assumption about plane->index

Greg Kroah-Hartman
2020-08-20T13:01:43Z

From: Paul Cercueil <paul@crapouillou.net>

commit ca43f274e03f91c533643299ae4984965ce03205 upstream.

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.

v2-v3: No change

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>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200716163846.174790-1-paul@crapouillou.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/gpu/drm/ingenic/ingenic-drm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/ingenic/ingenic-drm.c
+++ b/drivers/gpu/drm/ingenic/ingenic-drm.c
@@ -384,7 +384,7 @@ static void ingenic_drm_plane_atomic_upd
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;