[PATCH] HID: hid-ntrig: add error handling for sysfs_create_group

[Zhouyang Jia]

When sysfs_create_group fails, the lack of error-handling code may
cause unexpected results.

This patch adds error-handling code after calling sysfs_create_group.

Signed-off-by: Zhouyang Jia <jiazhouyan...@gmail.com>
---
 drivers/hid/hid-ntrig.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/hid/hid-ntrig.c b/drivers/hid/hid-ntrig.c
index 43b1c72..1e70dae 100644
--- a/drivers/hid/hid-ntrig.c
+++ b/drivers/hid/hid-ntrig.c
@@ -955,6 +955,10 @@ static int ntrig_probe(struct hid_device *hdev, const 
struct hid_device_id *id)
 
        ret = sysfs_create_group(&hdev->dev.kobj,
                        &ntrig_attribute_group);
+       if (ret) {
+               hid_err(hdev, "cannot create sysfs group\n");
+               goto err_free;
+       }
 
        return 0;
 err_free:
-- 
2.7.4