From 9fcf2b3c1c0276650fea537c71b513d27d929b05 Mon Sep 17 00:00:00 2001
From: Stefan Agner <stefan@agner.ch>
Date: Sun, 17 Jun 2018 10:48:22 +0200
Subject: [PATCH] drm/atmel-hlcdc: check stride values in the first plane
Git-commit: 9fcf2b3c1c0276650fea537c71b513d27d929b05
Patch-mainline: v4.18-rc2
References: bsc#1051510

The statement always evaluates to true since the struct fields
are arrays. This has shown up as a warning when compiling with
Clang: warning: address of array 'desc->layout.xstride' will always      evaluate to 'true' [-Wpointer-bool-conversion]

Check for values in the first plane instead.

Fixes: 1a396789f65a ("drm: add Atmel HLCDC Display Controller support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180617084826.31885-1-stefan@agner.ch
Acked-by: Takashi Iwai <tiwai@suse.de>

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

--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
@@ -839,7 +839,7 @@ static int atmel_hlcdc_plane_init_proper
 			return ret;
 	}
 
-	if (desc->layout.xstride && desc->layout.pstride) {
+	if (desc->layout.xstride[0] && desc->layout.pstride[0]) {
 		int ret;
 
 		ret = drm_plane_create_rotation_property(&plane->base,