gianfar: correct filer table writing

MAX_FILER_IDX is the last usable index.  Using less-than
will already guarantee that one entry for catch-all rule
will be left, no need to subtract 1 here.

Signed-off-by: Jakub Kicinski <kubakici@wp.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/net/ethernet/freescale/gianfar_ethtool.c b/drivers/net/ethernet/freescale/gianfar_ethtool.c
index 3c0a8f825b63..4a710f3eb5eb 100644
--- a/drivers/net/ethernet/freescale/gianfar_ethtool.c
+++ b/drivers/net/ethernet/freescale/gianfar_ethtool.c
@@ -1583,11 +1583,10 @@ static int gfar_write_filer_table(struct gfar_private *priv,
                 return -EBUSY;
 
         /* Fill regular entries */
-        for (; i < MAX_FILER_IDX - 1 && (tab->fe[i].ctrl | tab->fe[i].prop);
-             i++)
+        for (; i < MAX_FILER_IDX && (tab->fe[i].ctrl | tab->fe[i].prop); i++)
                 gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
         /* Fill the rest with fall-troughs */
-        for (; i < MAX_FILER_IDX - 1; i++)
+        for (; i < MAX_FILER_IDX; i++)
                 gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
         /* Last entry must be default accept
          * because that's what people expect