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authorLi Yang <leoli@freescale.com>2009-01-06 22:08:10 (GMT)
committerDavid S. Miller <davem@davemloft.net>2009-01-06 22:08:10 (GMT)
commitf430e49e9e0cf821c090abedb399b80ebf0cb4c6 (patch)
tree50b0d36acc55dbe17cce4157c1ef2ddeb2c81b4c
parent1fa17d4ba43d7e5aab5e90777b07da06524f6748 (diff)
downloadlinux-fsl-qoriq-f430e49e9e0cf821c090abedb399b80ebf0cb4c6.tar.xz
gianfar: ensure ECNTRL[R100] is cleared on link state change
When changing the link between 100Mbps and 1Gbps in SGMII mode it was found out that the link would stop working. The issue is that ECNTRL[R100] needs to be cleared when in 1Gbps mode. Older reference manuals didn't require the explicitly clearing but has since been found it that it is needed. Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Andy Fleming <afleming@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/gianfar.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index c672ecf..7fcc3af 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -1973,6 +1973,8 @@ static void adjust_link(struct net_device *dev)
case 1000:
tempval =
((tempval & ~(MACCFG2_IF)) | MACCFG2_GMII);
+
+ ecntrl &= ~(ECNTRL_R100);
break;
case 100:
case 10: