It will cause null-ptr-deref if platform_get_resource() returns NULL,
we need check the return value.
Fixes: 17e7dc4373df ("hwmon/sis5595: Convert to a platform driver")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
---
drivers/hwmon/sis5595.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/hwmon/sis5595.c b/drivers/hwmon/sis5595.c
index 018cb5a7651f..b664c306d087 100644
--- a/drivers/hwmon/sis5595.c
+++ b/drivers/hwmon/sis5595.c
@@ -579,6 +579,8 @@ static int sis5595_probe(struct platform_device *pdev)
/* Reserve the ISA region */
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+ if (!res)
+ return -EINVAL;
if (!devm_request_region(&pdev->dev, res->start, SIS5595_EXTENT,
sis5595_driver.driver.name))
return -EBUSY;
--
2.25.1
