From 1c1348bf056dee665760a3bd1cd30b0be7554fc2 Mon Sep 17 00:00:00 2001
From: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Date: Mon, 20 Dec 2021 16:38:11 +0800
Subject: [PATCH] power: reset: mt6397: Check for null res pointer
Git-commit: 1c1348bf056dee665760a3bd1cd30b0be7554fc2
Patch-mainline: v5.17-rc1
References: git-fixes
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.
Fixes: d28c74c10751 ("power: reset: add driver for mt6323 poweroff")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/power/reset/mt6323-poweroff.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/power/reset/mt6323-poweroff.c b/drivers/power/reset/mt6323-poweroff.c
index 0532803e6cbc..d90e76fcb938 100644
--- a/drivers/power/reset/mt6323-poweroff.c
+++ b/drivers/power/reset/mt6323-poweroff.c
@@ -57,6 +57,9 @@ static int mt6323_pwrc_probe(struct platform_device *pdev)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -EINVAL;
+
pwrc->base = res->start;
pwrc->regmap = mt6397_chip->regmap;
pwrc->dev = &pdev->dev;
--
2.31.1