hamradio: Fix bit test correctly.

Signed-off-by: NThomas Sailer <t.sailer@alumni.ethz.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/hamradio/baycom_epp.c

@@ -595,9 +595,8 @@ static int receive(struct net_device *dev, int cnt)
 					if (!(notbitstream & (0x1fc << j)))
 						state = 0;
 
-					/* not flag received */
-					else if ((bitstream & (0x1fe << j)) !=
-							(0x0fc << j)) {
+					/* flag received */
+					else if ((bitstream & (0x1fe << j)) == (0x0fc << j)) {
 						if (state)
 							do_rxpacket(dev);
 						bc->hdlcrx.bufcnt = 0;