It will cause null-ptr-deref if platform_get_resource() returns NULL,
we need check the return value.
Fixes: 45fb366940d5 ("hwmon: add support for Fintek F71882FG and F71883FG")
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
---
drivers/hwmon/f71882fg.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/hwmon/f71882fg.c b/drivers/hwmon/f71882fg.c
index 938a8b9ec70d..33aec2a35e57 100644
--- a/drivers/hwmon/f71882fg.c
+++ b/drivers/hwmon/f71882fg.c
@@ -2336,13 +2336,17 @@ static int f71882fg_probe(struct platform_device *pdev)
int err, i;
int size;
u8 start_reg, reg;
+ struct resource *res;
data = devm_kzalloc(&pdev->dev, sizeof(struct f71882fg_data),
GFP_KERNEL);
if (!data)
return -ENOMEM;
- data->addr = platform_get_resource(pdev, IORESOURCE_IO, 0)->start;
+ res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+ if (!res)
+ return -EINVAL;
+ data->addr = res->start;
data->type = sio_data->type;
data->temp_start =
(data->type == f71858fg || data->type == f8000 ||
--
2.25.1
