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sfc: If AN is enabled, always read speed/duplex from the AN advertising bits 

When AN is enabled and the link is down the speed/duplex control bits
will not be meaningful.  Use the advertising bits instead, and mask
them with the LPA bits if and only if AN is complete (as before).

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Ben Hutchings 2008-12-26 13:49:25 -08:00 committed by David S. Miller
parent f4bd954e7c
commit 843813453f
1 changed files with 10 additions and 7 deletions
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17
drivers/net/sfc/mdio_10g.c
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@ -368,13 +368,16 @@ void mdio_clause45_get_settings_ext(struct efx_nic *efx,
} else
ecmd->autoneg = AUTONEG_DISABLE;
/* If AN is enabled and complete, report best common mode */
if (ecmd->autoneg &&
(mdio_clause45_read(efx, phy_id, MDIO_MMD_AN, MDIO_MMDREG_STAT1) &
(1 << MDIO_AN_STATUS_AN_DONE_LBN))) {
u32 common, lpa;
lpa = mdio_clause45_get_an(efx, MDIO_AN_LPA, xnp_lpa);
common = ecmd->advertising & lpa;
if (ecmd->autoneg) {
/* If AN is complete, report best common mode,
* otherwise report best advertised mode. */
u32 common = ecmd->advertising;
if (mdio_clause45_read(efx, phy_id, MDIO_MMD_AN,
MDIO_MMDREG_STAT1) &
(1 << MDIO_AN_STATUS_AN_DONE_LBN)) {
common &= mdio_clause45_get_an(efx, MDIO_AN_LPA,
xnp_lpa);
}
if (common & ADVERTISED_10000baseT_Full) {
ecmd->speed = SPEED_10000;
ecmd->duplex = DUPLEX_FULL;