diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/hwmon/powerz.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/hwmon/powerz.c b/drivers/hwmon/powerz.c index 4e663d5b4e33..a75b941bd6e2 100644 --- a/drivers/hwmon/powerz.c +++ b/drivers/hwmon/powerz.c @@ -108,6 +108,9 @@ static int powerz_read_data(struct usb_device *udev, struct powerz_priv *priv) { int ret; + if (!priv->urb) + return -ENODEV; + priv->status = -ETIMEDOUT; reinit_completion(&priv->completion); @@ -224,6 +227,8 @@ static int powerz_probe(struct usb_interface *intf, mutex_init(&priv->mutex); init_completion(&priv->completion); + usb_set_intfdata(intf, priv); + hwmon_dev = devm_hwmon_device_register_with_info(parent, DRIVER_NAME, priv, &powerz_chip_info, NULL); @@ -232,8 +237,6 @@ static int powerz_probe(struct usb_interface *intf, return PTR_ERR(hwmon_dev); } - usb_set_intfdata(intf, priv); - return 0; } @@ -244,6 +247,7 @@ static void powerz_disconnect(struct usb_interface *intf) mutex_lock(&priv->mutex); usb_kill_urb(priv->urb); usb_free_urb(priv->urb); + priv->urb = NULL; mutex_unlock(&priv->mutex); } |