From ca43f274e03f91c533643299ae4984965ce03205 Mon Sep 17 00:00:00 2001
From: Paul Cercueil <paul@crapouillou.net>
Date: Thu, 16 Jul 2020 18:38:35 +0200
Subject: drm/ingenic: Fix incorrect assumption about plane->index
Git-commit: ca43f274e03f91c533643299ae4984965ce03205
Patch-mainline: v5.9-rc1
References: bsc#1152489

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
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 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
@@ -368,7 +368,7 @@ static void ingenic_drm_plane_atomic_upd
 		addr = drm_fb_cma_get_gem_addr(state->fb, state, 0);
 		width = state->crtc->state->adjusted_mode.hdisplay;
 		height = state->crtc->state->adjusted_mode.vdisplay;
-		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;