提交 d9e46de3 编写于 作者: T Tommy Christensen 提交者: Linus Torvalds

[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: NTommy S. Christensen <tommy.christensen@tpack.net>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
上级 106427e6
......@@ -1893,7 +1893,10 @@ vortex_timer(unsigned long data)
{
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);
if (!(mii_status & BMSR_LSTATUS)) {
/* Re-read to get actual link status */
mii_status = mdio_read(dev, vp->phys[0], MII_BMSR);
}
ok = 1;
if (vortex_debug > 2)
printk(KERN_DEBUG "%s: MII transceiver has status %4.4x.\n",
......
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