From: Lothar Waßmann Date: Wed, 7 Dec 2011 21:59:30 +0000 (+0000) Subject: net/fec: preserve MII/RMII setting in fec_stop() X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=42431dc24de343d62bb8fb885586de7f408919c8;p=~shefty%2Frdma-dev.git net/fec: preserve MII/RMII setting in fec_stop() Additionally to setting the ETHER_EN bit in FEC_ECNTRL the MII/RMII setting in FEC_R_CNTRL needs to be preserved to keep the MII interface functional. Signed-off-by: Lothar Waßmann Tested-by: Shawn Guo Acked-by: Shawn Guo Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/freescale/fec.c b/drivers/net/ethernet/freescale/fec.c index 11534b9c6b3..ab0afb5961f 100644 --- a/drivers/net/ethernet/freescale/fec.c +++ b/drivers/net/ethernet/freescale/fec.c @@ -515,6 +515,7 @@ fec_stop(struct net_device *ndev) struct fec_enet_private *fep = netdev_priv(ndev); const struct platform_device_id *id_entry = platform_get_device_id(fep->pdev); + u32 rmii_mode = readl(fep->hwp + FEC_R_CNTRL) & (1 << 8); /* We cannot expect a graceful transmit stop without link !!! */ if (fep->link) { @@ -531,8 +532,10 @@ fec_stop(struct net_device *ndev) writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK); /* We have to keep ENET enabled to have MII interrupt stay working */ - if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) + if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) { writel(2, fep->hwp + FEC_ECNTRL); + writel(rmii_mode, fep->hwp + FEC_R_CNTRL); + } }