From: Russell King Date: Fri, 1 Dec 2017 10:24:42 +0000 (+0000) Subject: phylink: restart 802.3z negotiation when starting net device X-Git-Tag: v4.16-rc1~123^2~426^2~5 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=85b43945cf758704f5d97767ec70a317c6c8d8eb;p=linux.git phylink: restart 802.3z negotiation when starting net device Restart 802.3z negotiation when the net device is brought up to ensure that the link partner has our current link modes. Signed-off-by: Russell King Reviewed-by: Florian Fainelli Signed-off-by: David S. Miller --- diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c index 560486463930..40563c8d7352 100644 --- a/drivers/net/phy/phylink.c +++ b/drivers/net/phy/phylink.c @@ -751,6 +751,12 @@ void phylink_start(struct phylink *pl) phylink_resolve_flow(pl, &pl->link_config); phylink_mac_config(pl, &pl->link_config); + /* Restart autonegotiation if using 802.3z to ensure that the link + * parameters are properly negotiated. This is necessary for DSA + * switches using 802.3z negotiation to ensure they see our modes. + */ + phylink_mac_an_restart(pl); + clear_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state); phylink_run_resolve(pl);