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authorTommy Christensen <tommy.christensen@tpack.net>2005-11-07 00:58:04 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-07 07:53:25 -0800
commitd9e46de34e4212f472684b1561ba323aac54ea25 (patch)
treebf8392ea5f243cc5ddbd32c82dec144ba82d036b /drivers/net/3c59x.c
parent106427e65d2b6f3a519ab5d14a3586007e7e0f20 (diff)
[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>
Diffstat (limited to 'drivers/net/3c59x.c')
-rw-r--r--drivers/net/3c59x.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/3c59x.c b/drivers/net/3c59x.c
index 88ce4c43fd4f..e1f773d07edb 100644
--- a/drivers/net/3c59x.c
+++ b/drivers/net/3c59x.c
@@ -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",