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net/usb/r815x: avoid to call mdio functions for runtime-suspended device

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Don't replace the usb_control_msg() with usbnet_{read,write}_cmd()
which couldn't be called inside suspend/resume callback. Keep the
basic functions unlimited. Instead, using usb_autopm_get_interface()
and usb_autopm_put_interface() in r815x_mdio_{read,write}().

Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
hayeswang 2013-07-31 17:21:23 +08:00 committed by David S. Miller
parent b2f47377e8
commit b771721a74
1 changed files with 13 additions and 1 deletions
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14
drivers/net/usb/r815x.c
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@ -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)