[ATM] suni: cast arg properly in SONET_SETFRAMING

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/atm/suni.c

@@ -188,7 +188,7 @@ static int suni_ioctl(struct atm_dev *dev,unsigned int cmd,void __user *arg)
 		case SONET_GETDIAG:
 			return get_diag(dev,arg);
 		case SONET_SETFRAMING:
-			if (arg != SONET_FRAME_SONET) return -EINVAL;
+			if ((int)(unsigned long)arg != SONET_FRAME_SONET) return -EINVAL;
 			return 0;
 		case SONET_GETFRAMING:
 			return put_user(SONET_FRAME_SONET,(int __user *)arg) ?