cxgb4: silence shift wrapping static checker warning

I don't know how large "tp->vlan_shift" is but static checkers worry about shift wrapping bugs here. Signed-off-by: Dan Carpenter <[email protected]> Acked-by: Dimitris Michailidis <[email protected]> Signed-off-by: David S. Miller <[email protected]>
kyagi · Jan 13, 2014 · 9ef9730 · 9ef9730
1 parent 228fdc0
commit 9ef9730
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/net/ethernet/chelsio/cxgb4/l2t.c b/drivers/net/ethernet/chelsio/cxgb4/l2t.c
@@ -423,7 +423,7 @@ u64 cxgb4_select_ntuple(struct net_device *dev,
 	 * in the Compressed Filter Tuple.
 	 */
 	if (tp->vlan_shift >= 0 && l2t->vlan != VLAN_NONE)
-		ntuple |= (F_FT_VLAN_VLD | l2t->vlan) << tp->vlan_shift;
+		ntuple |= (u64)(F_FT_VLAN_VLD | l2t->vlan) << tp->vlan_shift;
 
 	if (tp->port_shift >= 0)
 		ntuple |= (u64)l2t->lport << tp->port_shift;