ramips: Add missing andmask to ramips_esw register read for recv_good value.

Add missing andmask to ramips_esw register read for recv_good value.

Without the mask, recv_bad leaks into the recv_good packet count.
Didn't notice the bug before since you don't usually get bad
packets, so I only saw it when I was playing with overlength packets
earlier...

Signed-off-by: Tobias Diedrich <ranma+openwrt@tdiedrich.de>

SVN-Revision: 33322

target/linux/ramips/files/drivers/net/ethernet/ramips/ramips_esw.c

@@ -750,11 +750,13 @@ rt305x_esw_get_port_recv_badgood(struct switch_dev *dev,
 	struct rt305x_esw *esw = container_of(dev, struct rt305x_esw, swdev);
 	int idx = val->port_vlan;
 	int shift = attr->id == RT305X_ESW_ATTR_PORT_RECV_GOOD ? 0 : 16;
+	u32 reg;
 
 	if (idx < 0 || idx >= RT305X_ESW_NUM_LANWAN)
 		return -EINVAL;
 
-	val->value.i = rt305x_esw_rr(esw, RT305X_ESW_REG_P0PC + 4*idx) >> shift;
+	reg = rt305x_esw_rr(esw, RT305X_ESW_REG_P0PC + 4*idx);
+	val->value.i = (reg >> shift) & 0xffff;
 
 	return 0;
 }