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thermal/drivers/broadcom: Fix potential NULL dereference in sr_thermal_probe

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[ Upstream commit e20d136ec7d6f309989c447638365840d3424c8e ]

platform_get_resource() may return NULL, add proper check to
avoid potential NULL dereferencing.

Fixes: 250e211057c72 ("thermal: broadcom: Add Stingray thermal driver")
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Link: https://lore.kernel.org/r/20220425092929.90412-1-zhengyongjun3@huawei.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Zheng Yongjun 2022-04-25 09:29:29 +00:00 committed by Greg Kroah-Hartman
parent 449374565f
commit b3461ccaa5
1 changed files with 3 additions and 0 deletions
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3
drivers/thermal/broadcom/sr-thermal.c
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@ -60,6 +60,9 @@ static int sr_thermal_probe(struct platform_device *pdev)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res)
return -ENOENT;
sr_thermal->regs = (void __iomem *)devm_memremap(&pdev->dev, res->start,
resource_size(res),
MEMREMAP_WB);