From: Wang YanQing <udknight@gmail.com>
Date: Sat, 30 Mar 2013 02:53:00 +0000 (+0200)
Subject: video:uvesafb: Fix dereference NULL pointer code path
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=090da752cdd6f0786eee68c8dea8db7c8abd3798;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

video:uvesafb: Fix dereference NULL pointer code path

platform_device_alloc could failed and return NULL,
we should check this before call platform_device_put.

Signed-off-by: Wang YanQing <udknight@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
---

diff --git a/drivers/video/uvesafb.c b/drivers/video/uvesafb.c
index b75db0186488..d4284458377e 100644
--- a/drivers/video/uvesafb.c
+++ b/drivers/video/uvesafb.c
@@ -1973,7 +1973,8 @@ static int uvesafb_init(void)
 			err = -ENOMEM;
 
 		if (err) {
-			platform_device_put(uvesafb_device);
+			if (uvesafb_device)
+				platform_device_put(uvesafb_device);
 			platform_driver_unregister(&uvesafb_driver);
 			cn_del_callback(&uvesafb_cn_id);
 			return err;