From 991fcb77f490390bcad89fa67d95763c58cdc04c Mon Sep 17 00:00:00 2001
From: Lyude Paul <lyude@redhat.com>
Date: Thu, 5 Nov 2020 18:57:02 -0500
Subject: [PATCH] drm/edid: Fix uninitialized variable in drm_cvt_modes()
Git-commit: 991fcb77f490390bcad89fa67d95763c58cdc04c
Patch-mainline: v5.11-rc1
References: git-fixes

Noticed this when trying to compile with -Wall on a kernel fork. We
potentially don't set width here, which causes the compiler to complain
about width potentially being uninitialized in drm_cvt_modes(). So, let's
fix that.

Changes since v1:
* Don't emit an error as this code isn't reachable, just mark it as such
Changes since v2:
* Remove now unused variable

Fixes: 3f649ab728cd ("treewide: Remove uninitialized_var() usage")
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
Link: https://patchwork.freedesktop.org/patch/msgid/20201105235703.1328115-1-lyude@redhat.com
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/gpu/drm/drm_edid.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index c7363af731b4..74f5a3197214 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -3114,6 +3114,8 @@ static int drm_cvt_modes(struct drm_connector *connector,
 		case 0x0c:
 			width = height * 15 / 9;
 			break;
+		default:
+			unreachable();
 		}
 
 		for (j = 1; j < 5; j++) {
-- 
2.26.2