target/linux/brcm2708/patches-4.4/0336-drm-vc4-Fix-NULL-deref-in-HDMI-init-error-path.patch


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25

From 00dc0773c1af03a24f76c53223ab0c3d1fc7debb Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Mon, 4 Apr 2016 14:25:59 -0700
Subject: [PATCH 336/381] drm/vc4: Fix NULL deref in HDMI init error path

If you make it here other than through err_destroy_encoder, vc4->hdmi
is still NULL.

Signed-off-by: Eric Anholt <eric@anholt.net>
(cherry picked from commit 5883980313af70aec0ceebaef6ef0709726e5e63)
---
 drivers/gpu/drm/vc4/vc4_hdmi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -573,7 +573,7 @@ err_unprepare_hsm:
 err_unprepare_pix:
 	clk_disable_unprepare(hdmi->pixel_clock);
 err_put_i2c:
-	put_device(&vc4->hdmi->ddc->dev);
+	put_device(&hdmi->ddc->dev);
 
 	return ret;
 }