[PATCH RFC v1 6/7] net: mvneta: resume/suspend PHY on port start/stop

Sebastian Hesselbarth sebastian.hesselbarth at gmail.com
Wed Nov 20 15:21:52 EST 2013

Network PHYs consume a noticable amount of power. This adds phy_resume
on start_dev and phy_suspend on stop_dev to save this power if the
port is down anyway.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth at gmail.com>
Cc: David S. Miller <davem at davemloft.net>
Cc: netdev at vger.kernel.org
Cc: linux-arm-kernel at lists.infradead.org
Cc: linux-kernel at vger.kernel.org
 drivers/net/ethernet/marvell/mvneta.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index b8e232b..8688e91 100644
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -2194,6 +2194,7 @@ static void mvneta_start_dev(struct mvneta_port *pp)
 	mvreg_write(pp, MVNETA_INTR_NEW_MASK,
+	phy_resume(pp->phy_dev);
@@ -2201,6 +2202,7 @@ static void mvneta_start_dev(struct mvneta_port *pp)
 static void mvneta_stop_dev(struct mvneta_port *pp)
+	phy_suspend(pp->phy_dev);

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