diff mbox series

[14/20] hwmon: (smsc47m1) check return value after calling platform_get_resource()

Message ID 20220422091207.4034406-15-yangyingliang@huawei.com (mailing list archive)
State Accepted
Headers show
Series hwmon: check return value after calling platform_get_resource() | expand

Commit Message

Yang Yingliang April 22, 2022, 9:12 a.m. UTC 
It will cause null-ptr-deref if platform_get_resource() returns NULL,
we need check the return value.

Fixes: 51f2cca1f72d ("hwmon/smsc47m1: Convert to a platform driver")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
---
 drivers/hwmon/smsc47m1.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/hwmon/smsc47m1.c b/drivers/hwmon/smsc47m1.c
index 37531b5c8254..0dc432af7b18 100644
--- a/drivers/hwmon/smsc47m1.c
+++ b/drivers/hwmon/smsc47m1.c
@@ -719,6 +719,8 @@  static int __init smsc47m1_probe(struct platform_device *pdev)
 	};
 
 	res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+	if (!res)
+		return -EINVAL;
 	err = smsc47m1_handle_resources(res->start, sio_data->type,
 					REQUEST, dev);
 	if (err < 0)