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[PATCH] 3c59x: avoid blindly reading link status twice 

In order to spare some I/O operations, be more intelligent about when to
read from the PHY.

Pointed out by Bogdan Costescu.

Signed-off-by: Tommy S. Christensen <tommy.christensen@tpack.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Tommy Christensen 2005-11-07 00:58:04 -08:00 committed by Linus Torvalds
parent 106427e65d
commit d9e46de34e
1 changed files with 4 additions and 1 deletions
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5
drivers/net/3c59x.c
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@ -1893,7 +1893,10 @@ vortex_timer(unsigned long data)
{ {
spin_lock_bh(&vp->lock); spin_lock_bh(&vp->lock);
mii_status = mdio_read(dev, vp->phys[0], MII_BMSR); mii_status = mdio_read(dev, vp->phys[0], MII_BMSR);
mii_status = mdio_read(dev, vp->phys[0], MII_BMSR); if (!(mii_status & BMSR_LSTATUS)) {
/* Re-read to get actual link status */
mii_status = mdio_read(dev, vp->phys[0], MII_BMSR);
}
ok = 1; ok = 1;
if (vortex_debug > 2) if (vortex_debug > 2)
printk(KERN_DEBUG "%s: MII transceiver has status %4.4x.\n", printk(KERN_DEBUG "%s: MII transceiver has status %4.4x.\n",