From: Philippe CORNU <philippe.cornu@st.com>
Date: Thu, 19 Apr 2018 15:28:04 +0200
Subject: drm/stm: ltdc: fix warnings in ltdc_plane_create()
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Git-commit: cccb57d8fdc9332c14f451e96a9604fa02a5bed2
Patch-mainline: v4.18-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

"make C=1" returns 2 warnings in ltdc_plane_create()
("Using plain integer as NULL pointer"). This patch
fixes them.

Signed-off-by: Philippe Cornu <philippe.cornu@st.com>
Reviewed-by: Yannick Fertré <yannick.fertre@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180419132804.8317-1-philippe.cornu@st.com

Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/stm/ltdc.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/stm/ltdc.c
+++ b/drivers/gpu/drm/stm/ltdc.c
@@ -860,13 +860,13 @@ static struct drm_plane *ltdc_plane_crea
 
 	plane = devm_kzalloc(dev, sizeof(*plane), GFP_KERNEL);
 	if (!plane)
-		return 0;
+		return NULL;
 
 	ret = drm_universal_plane_init(ddev, plane, possible_crtcs,
 				       &ltdc_plane_funcs, formats, nb_fmt,
 				       NULL, type, NULL);
 	if (ret < 0)
-		return 0;
+		return NULL;
 
 	drm_plane_helper_add(plane, &ltdc_plane_helper_funcs);