From: Zheng Yongjun zhengyongjun3@huawei.com
[ 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 --- drivers/thermal/broadcom/sr-thermal.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/thermal/broadcom/sr-thermal.c b/drivers/thermal/broadcom/sr-thermal.c index 475ce2900771..85ab9edd580c 100644 --- a/drivers/thermal/broadcom/sr-thermal.c +++ b/drivers/thermal/broadcom/sr-thermal.c @@ -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);