[PATCH] hid-elo: update the reference count of the usb device structure
From: Salah Triki <salah.triki@gmail.com>
Date: 2021-07-24 20:24:42
Use usb_get_dev() and usb_put_dev() in order to update the reference count of the usb device structure. Signed-off-by: Salah Triki <salah.triki@gmail.com> --- drivers/hid/hid-elo.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/hid/hid-elo.c b/drivers/hid/hid-elo.c
index 0d22713a3874..383dfda8c12f 100644
--- a/drivers/hid/hid-elo.c
+++ b/drivers/hid/hid-elo.c@@ -228,13 +228,15 @@ static int elo_probe(struct hid_device *hdev, const struct hid_device_id *id) { struct elo_priv *priv; int ret; + struct usb_device *udev; priv = kzalloc(sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; INIT_DELAYED_WORK(&priv->work, elo_work); - priv->usbdev = interface_to_usbdev(to_usb_interface(hdev->dev.parent)); + udev = interface_to_usbdev(to_usb_interface(hdev->dev.parent)); + priv->usbdev = usb_get_dev(udev); hid_set_drvdata(hdev, priv);
@@ -265,6 +267,8 @@ static void elo_remove(struct hid_device *hdev) { struct elo_priv *priv = hid_get_drvdata(hdev); + usb_put_dev(priv->usbdev); + hid_hw_stop(hdev); cancel_delayed_work_sync(&priv->work); kfree(priv);
--
2.25.1