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authorLothar Waßmann <LW@KARO-electronics.de>2011-12-07 21:59:30 +0000
committerDavid S. Miller <davem@davemloft.net>2011-12-08 19:51:20 -0500
commit42431dc24de343d62bb8fb885586de7f408919c8 (patch)
treec78449f9d53863a1e23f2b44ccdad36e2e289112
parent589efdc7f7327bc8ddf597bdaf9de38fcea31744 (diff)
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 <LW@KARO-electronics.de> Tested-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/ethernet/freescale/fec.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/ethernet/freescale/fec.c b/drivers/net/ethernet/freescale/fec.c
index 11534b9c6b39..ab0afb5961f6 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);
+ }
}