diff options
| author |   Steve Glendinning <steve.glendinning@shawell.net> | 2012-05-04 00:57:12 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2012-05-07 23:43:56 -0400 |
| commit | 4f94a929e4adb0d0ed78d448ff68fe870163c575 (patch) | |
| tree | e9c1afc53b91b8e27fad9d5c570f3256da194ce6 /drivers/net/usb/smsc75xx.c | |
| parent | smsc75xx: replace 0xffff with PHY_INT_SRC_CLEAR_ALL (diff) | |
| download | linux-dev-4f94a929e4adb0d0ed78d448ff68fe870163c575.tar.xz linux-dev-4f94a929e4adb0d0ed78d448ff68fe870163c575.zip | |
smsc75xx: eliminate unnecessary phy register read
Only a write is necessary to clear the interrupt status, and we
don't use the value from the preceding read operation. This
patch eliminates the unnecessary read.
Signed-off-by: Steve Glendinning <steve.glendinning@shawell.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/usb/smsc75xx.c')
| -rw-r--r-- | drivers/net/usb/smsc75xx.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c index ecab87b85728..72b62b51c46f 100644 --- a/drivers/net/usb/smsc75xx.c +++ b/drivers/net/usb/smsc75xx.c @@ -508,9 +508,7 @@ static int smsc75xx_link_reset(struct usbnet *dev) u16 lcladv, rmtadv; int ret; - /* read and write to clear phy interrupt status */ - ret = smsc75xx_mdio_read(dev->net, mii->phy_id, PHY_INT_SRC); - check_warn_return(ret, "Error reading PHY_INT_SRC"); + /* write to clear phy interrupt status */ smsc75xx_mdio_write(dev->net, mii->phy_id, PHY_INT_SRC, PHY_INT_SRC_CLEAR_ALL); |