[PATCH 4/4] net phylib: Call phy_update_status when no link is present

[Sascha Hauer]

We call phy_update_status only once in 5 seconds. This makes
sure we do not have great overhead when using ethernet devices.
However, if phylib tells us the link is down anyway, there won't
be ethernet transfers, so it doesn't hurt to call phy_update_status
in this case. This makes sure we can use the ethernet device when
the link comes up and do not have an additional 5 second penalty
in this case.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 net/eth.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/eth.c b/net/eth.c
index 0a1850f..101fc10 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -138,7 +138,8 @@ static int eth_carrier_check(int force)
 	if (!eth_current->phydev)
 		return 0;
 
-	if (force || is_timeout(last_link_check, 5 * SECOND)) {
+	if (force || is_timeout(last_link_check, 5 * SECOND) ||
+			!eth_current->phydev->link) {
 		ret = phy_update_status(eth_current->phydev);
 		if (ret)
 			return ret;
-- 
1.7.10.4