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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 <rmk+kernel@armlinux.org.uk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Russell King 2017-12-01 10:24:42 +00:00 committed by David S. Miller
parent 939eae25d9
commit 85b43945cf
1 changed files with 6 additions and 0 deletions
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6
drivers/net/phy/phylink.c
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@ -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);