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Subject[PATCH] HID: potential dereference of null pointer
Date
The return value of devm_kzalloc() needs to be checked.
To avoid hdev->dev->driver_data to be null in case of the failure of
alloc.

Fixes: 14c9c014babe ("HID: add vivaldi HID driver")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
---
drivers/hid/hid-vivaldi.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/hid/hid-vivaldi.c b/drivers/hid/hid-vivaldi.c
index cd7ada48b1d9..72957a9f7117 100644
--- a/drivers/hid/hid-vivaldi.c
+++ b/drivers/hid/hid-vivaldi.c
@@ -57,6 +57,9 @@ static int vivaldi_probe(struct hid_device *hdev,
int ret;

drvdata = devm_kzalloc(&hdev->dev, sizeof(*drvdata), GFP_KERNEL);
+ if (!drvdata)
+ return -ENOMEM;
+
hid_set_drvdata(hdev, drvdata);

ret = hid_parse(hdev);
--
2.25.1
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