| Message ID | 20220422091207.4034406-14-yangyingliang@huawei.com (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show |
| Series | hwmon: check return value after calling platform_get_resource() | expand |
diff --git a/drivers/hwmon/smsc47b397.c b/drivers/hwmon/smsc47b397.c index c26d6eae0e4e..07c04780f871 100644 --- a/drivers/hwmon/smsc47b397.c +++ b/drivers/hwmon/smsc47b397.c @@ -224,6 +224,8 @@ static int smsc47b397_probe(struct platform_device *pdev) struct resource *res; res = platform_get_resource(pdev, IORESOURCE_IO, 0); + if (!res) + return -EINVAL; if (!devm_request_region(dev, res->start, SMSC_EXTENT, smsc47b397_driver.driver.name)) { dev_err(dev, "Region 0x%lx-0x%lx already in use!\n",
It will cause null-ptr-deref if platform_get_resource() returns NULL, we need check the return value. Fixes: 292fc1a5ff44 ("hwmon/smsc47b397: Convert to a platform driver") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> --- drivers/hwmon/smsc47b397.c | 2 ++ 1 file changed, 2 insertions(+)