[PATCH 1/2] drm/ingenic: Handle errors of drm_atomic_get_plane_state

[Paul Cercueil <paul@crapouillou.net>]

drm_atomic_get_plane_state() can return errors, so we need to handle
these.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---
 drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
index ada990a7f911..64eabab3ef69 100644
--- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
+++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
@@ -215,10 +215,17 @@ static int ingenic_drm_crtc_atomic_check(struct drm_crtc *crtc,
 
 	if (priv->soc_info->has_osd) {
 		f1_state = drm_atomic_get_plane_state(state->state, &priv->f1);
+		if (IS_ERR(f1_state))
+			return PTR_ERR(f1_state);
+
 		f0_state = drm_atomic_get_plane_state(state->state, &priv->f0);
+		if (IS_ERR(f0_state))
+			return PTR_ERR(f0_state);
 
 		if (IS_ENABLED(CONFIG_DRM_INGENIC_IPU) && priv->ipu_plane) {
 			ipu_state = drm_atomic_get_plane_state(state->state, priv->ipu_plane);
+			if (IS_ERR(ipu_state))
+				return PTR_ERR(ipu_state);
 
 			/* IPU and F1 planes cannot be enabled at the same time. */
 			if (f1_state->fb && ipu_state->fb) {
-- 
2.27.0