From: Daniel Stone <daniels@collabora.com>

We should never be able to create a framebuffer with an unsupported
format, so throw a warning if this ever happens.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
---
 drivers/gpu/drm/rockchip/rockchip_drm_vop2.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
index 498df0ce4680..20b49209ddcd 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
@@ -1030,7 +1030,8 @@ static int vop2_plane_atomic_check(struct drm_plane *plane,
 		return 0;
 
 	format = vop2_convert_format(fb->format->format);
-	if (format < 0)
+	/* We shouldn't be able to create a fb for an unsupported format */
+	if (WARN_ON(format < 0))
 		return format;
 
 	/* Co-ordinates have now been clipped */

-- 
2.52.0