diff options
| -rw-r--r-- | drivers/net/usb/r815x.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/net/usb/r815x.c b/drivers/net/usb/r815x.c index e9b99bad02a..1a80e76ce0b 100644 --- a/drivers/net/usb/r815x.c +++ b/drivers/net/usb/r815x.c @@ -126,11 +126,18 @@ out1: static int r815x_mdio_read(struct net_device *netdev, int phy_id, int reg) { struct usbnet *dev = netdev_priv(netdev); + int ret; if (phy_id != R815x_PHY_ID) return -EINVAL; - return ocp_reg_read(dev, BASE_MII + reg * 2); + if (usb_autopm_get_interface(dev->intf) < 0) + return -ENODEV; + + ret = ocp_reg_read(dev, BASE_MII + reg * 2); + + usb_autopm_put_interface(dev->intf); + return ret; } static @@ -141,7 +148,12 @@ void r815x_mdio_write(struct net_device *netdev, int phy_id, int reg, int val) if (phy_id != R815x_PHY_ID) return; + if (usb_autopm_get_interface(dev->intf) < 0) + return; + ocp_reg_write(dev, BASE_MII + reg * 2, val); + + usb_autopm_put_interface(dev->intf); } static int r8153_bind(struct usbnet *dev, struct usb_interface *intf) |