netdev: bfin_mac: clear RXCKS if hardware generated checksum is not enabled

Otherwise we might be get a setting mismatch from a previous module or
bootloader and what the driver currently expects.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/net/bfin_mac.c b/drivers/net/bfin_mac.c
index 9e010d69f34a..5d962b86ee22 100644
--- a/drivers/net/bfin_mac.c
+++ b/drivers/net/bfin_mac.c
@@ -515,10 +515,11 @@ void setup_system_regs(struct net_device *dev)
          * Configure checksum support and rcve frame word alignment
          */
         sysctl = bfin_read_EMAC_SYSCTL();
+        sysctl |= RXDWA;
 #if defined(BFIN_MAC_CSUM_OFFLOAD)
-        sysctl |= RXDWA | RXCKS;
+        sysctl |= RXCKS;
 #else
-        sysctl |= RXDWA;
+        sysctl &= ~RXCKS;
 #endif
         bfin_write_EMAC_SYSCTL(sysctl);