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-rw-r--r--drivers/net/bfin_mac.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/bfin_mac.c b/drivers/net/bfin_mac.c
index 0a17fb48c55c..c993a32b3f50 100644
--- a/drivers/net/bfin_mac.c
+++ b/drivers/net/bfin_mac.c
@@ -408,7 +408,7 @@ static int mii_probe(struct net_device *dev)
mdc_div = ((sclk / MDC_CLK) / 2) - 1;
sysctl = bfin_read_EMAC_SYSCTL();
- sysctl |= SET_MDCDIV(mdc_div);
+ sysctl = (sysctl & ~MDCDIV) | SET_MDCDIV(mdc_div);
bfin_write_EMAC_SYSCTL(sysctl);
/* search for connect PHY device */