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GRETH: avoid writing bad speed/duplex when setting transfer mode 

Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Hellstrom 2011-01-14 03:02:41 +00:00 committed by David S. Miller
parent b669e7f058
commit 2436af8ca7
1 changed files with 8 additions and 11 deletions
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19
drivers/net/greth.c
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@ -1232,29 +1232,26 @@ static void greth_link_change(struct net_device *dev)
struct greth_private *greth = netdev_priv(dev);
struct phy_device *phydev = greth->phy;
unsigned long flags;
int status_change = 0;
u32 ctrl;
spin_lock_irqsave(&greth->devlock, flags);
if (phydev->link) {
if ((greth->speed != phydev->speed) || (greth->duplex != phydev->duplex)) {
GRETH_REGANDIN(greth->regs->control,
~(GRETH_CTRL_FD | GRETH_CTRL_SP | GRETH_CTRL_GB));
ctrl = GRETH_REGLOAD(greth->regs->control) &
~(GRETH_CTRL_FD | GRETH_CTRL_SP | GRETH_CTRL_GB);
if (phydev->duplex)
GRETH_REGORIN(greth->regs->control, GRETH_CTRL_FD);
if (phydev->speed == SPEED_100) {
GRETH_REGORIN(greth->regs->control, GRETH_CTRL_SP);
}
ctrl |= GRETH_CTRL_FD;
if (phydev->speed == SPEED_100)
ctrl |= GRETH_CTRL_SP;
else if (phydev->speed == SPEED_1000)
GRETH_REGORIN(greth->regs->control, GRETH_CTRL_GB);
ctrl |= GRETH_CTRL_GB;
GRETH_REGSAVE(greth->regs->control, ctrl);
greth->speed = phydev->speed;
greth->duplex = phydev->duplex;
status_change = 1;