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power: reset: mt6397: Check for null res pointer

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[ Upstream commit 1c1348bf05 ]

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: d28c74c107 ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jiasheng Jiang 2021-12-20 16:38:11 +08:00 committed by Greg Kroah-Hartman
parent 4210c35fe8
commit 2e718389b9
1 changed files with 3 additions and 0 deletions
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3
drivers/power/reset/mt6323-poweroff.c
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@ -57,6 +57,9 @@ static int mt6323_pwrc_probe(struct platform_device *pdev)
return -ENOMEM; return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0); res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res)
return -EINVAL;
pwrc->base = res->start; pwrc->base = res->start;
pwrc->regmap = mt6397_chip->regmap; pwrc->regmap = mt6397_chip->regmap;
pwrc->dev = &pdev->dev; pwrc->dev = &pdev->dev;