It will cause null-ptr-deref if platform_get_resource() returns NULL,
we need check the return value.
Fixes: e53004e20a58 ("[PATCH] hwmon: New f71805f driver")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
---
drivers/hwmon/f71805f.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/hwmon/f71805f.c b/drivers/hwmon/f71805f.c
index 7f20edb0677c..7d88e7647074 100644
--- a/drivers/hwmon/f71805f.c
+++ b/drivers/hwmon/f71805f.c
@@ -1384,6 +1384,8 @@ static int f71805f_probe(struct platform_device *pdev)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+ if (!res)
+ return -EINVAL;
if (!devm_request_region(&pdev->dev, res->start + ADDR_REG_OFFSET, 2,
DRVNAME)) {
dev_err(&pdev->dev, "Failed to request region 0x%lx-0x%lx\n",
--
2.25.1
