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UEC PHY: Speed up initial PHY neg.

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Instead of always performing an autoneg, check if the PHY
already has a link and if it matches one of the requested
modes. Initially only 100MbFD is optimized this way.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
This commit is contained in:
Joakim Tjernlund 2010-08-10 16:36:49 +02:00 • committed by Ben Warren
parent 68e1ede88a
commit f29c181cd4
1 changed files with 9 additions and 0 deletions
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9
drivers/qe/uec_phy.c
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@ -351,6 +351,15 @@ static int marvell_config_aneg (struct uec_mii_info *mii_info)
static int genmii_config_aneg (struct uec_mii_info *mii_info) static int genmii_config_aneg (struct uec_mii_info *mii_info)
{ {
if (mii_info->autoneg) { if (mii_info->autoneg) {
/* Speed up the common case, if link is already up, speed and
duplex match, skip auto neg as it already matches */
if (!genmii_read_status(mii_info) && mii_info->link)
if (mii_info->duplex == DUPLEX_FULL &&
mii_info->speed == SPEED_100)
if (mii_info->advertising &
ADVERTISED_100baseT_Full)
return 0;
config_genmii_advert (mii_info); config_genmii_advert (mii_info);
genmii_restart_aneg (mii_info); genmii_restart_aneg (mii_info);
} else } else