(4/6) bcm57xx: switch-core.c/switch-robo.c check for port already registered

This patch prevents switch-robo.c from attempting robo_probe on a port
that is already registered.  robo_probe will adjust kernel reference counts
if it detects a switch on the port.  If this patch wasn't applied, the
wrt350n would hang on reboot, waiting for the network driver reference count
to reach zero indefinitely.

Signed-off-by: Ben Pfountz <netprince (at) vt (dot) edu>

SVN-Revision: 11469

package/switch/src/switch-robo.c

@@ -528,7 +528,8 @@ static int __init robo_init(void)
 
 	device = strdup("ethX");
 	for (device[3] = '0'; (device[3] <= '3') && notfound; device[3]++) {
-		notfound = robo_probe(device);
+		if (! switch_device_registered (device))
+			notfound = robo_probe(device);
 	}
 	device[3]--;