From 7ba15fc67ee65de4abf1093f60622ee30bd5afd2 Mon Sep 17 00:00:00 2001
From: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Date: Mon, 20 Dec 2021 16:11:32 +0800
Subject: video: fbdev: imxfb: Check for null res pointer
Git-commit: 9d54c5d47406588f7bae9b72bd9f922b33434327
Patch-mainline: v5.18-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
The return value of platform_get_resource() needs to be checked.
To avoid use of error pointer in case that there is no suitable resource.
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: Helge Deller <deller@gmx.de>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/video/fbdev/imxfb.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/video/fbdev/imxfb.c b/drivers/video/fbdev/imxfb.c
index ad598257ab38..68288756ffff 100644
--- a/drivers/video/fbdev/imxfb.c
+++ b/drivers/video/fbdev/imxfb.c
@@ -1083,6 +1083,8 @@ static int imxfb_remove(struct platform_device *pdev)
struct resource *res;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -EINVAL;
imxfb_disable_controller(fbi);
--
2.38.1