From 858eeb7d9ce2e5c8e0192d9e2a3d84b2dd72a801 Mon Sep 17 00:00:00 2001 From: Nimrod Andy Date: Thu, 11 Dec 2014 09:20:31 +0800 Subject: net: fec: reset fep link status in suspend function On some i.MX6 serial boards, phy power and refrence clock are supplied or controlled by SOC. When do suspend/resume test, the power and clock are disabled, so phy device link down. For current driver, fep->link is still up status, which cause extra operation like below code. To avoid the dumy operation, we set fep->link to down when phy device is real down. ... if (fep->link) { napi_disable(&fep->napi); netif_tx_lock_bh(ndev); fec_stop(ndev); netif_tx_unlock_bh(ndev); napi_enable(&fep->napi); fep->link = phy_dev->link; status_change = 1; } ... Signed-off-by: Fugang Duan Signed-off-by: David S. Miller diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index fee2afe..b118b7d 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -3332,6 +3332,12 @@ static int __maybe_unused fec_suspend(struct device *dev) if (fep->reg_phy) regulator_disable(fep->reg_phy); + /* SOC supply clock to phy, when clock is disabled, phy link down + * SOC control phy regulator, when regulator is disabled, phy link down + */ + if (fep->clk_enet_out || fep->reg_phy) + fep->link = 0; + return 0; } -- cgit v0.10.2