Minor Wavelan wireless net driver fixes:

o use 'time_after' (contributed by Tim Schmielau)
o fix compile warning in my previous patch (Rene Scharfe)
o use 'inline' to try to minimise ethtool bloat (me)

drivers/net/wireless/wavelan_cs.c

@@ -676,7 +676,7 @@ void wl_cell_expiry(unsigned long data)
   
   while(wavepoint!=NULL)
     {
-      if(wavepoint->last_seen < jiffies-CELL_TIMEOUT)
+      if(time_after(jiffies, wavepoint->last_seen + CELL_TIMEOUT))
 	{
 #ifdef WAVELAN_ROAMING_DEBUG
 	  printk(KERN_DEBUG "WaveLAN: Bye bye %.4X\n",wavepoint->nwid);
@@ -1859,7 +1859,8 @@ wl_his_gather(device *	dev,
 }
 #endif	/* HISTOGRAM */
 
-static int netdev_ethtool_ioctl(struct net_device *dev, void *useraddr)
+static inline int
+wl_netdev_ethtool_ioctl(struct net_device *dev, void *useraddr)
 {
 	u32 ethcmd;
 
@@ -2901,7 +2902,9 @@ wavelan_ioctl(struct net_device *	dev,	/* Device on wich the ioctl apply */
 	      struct ifreq *	rq,	/* Data passed */
 	      int		cmd)	/* Ioctl number */
 {
+#if WIRELESS_EXT <= 12
   struct iwreq *	wrq = (struct iwreq *) rq;
+#endif
   int			ret = 0;
 
 #ifdef DEBUG_IOCTL_TRACE
@@ -2912,7 +2915,7 @@ wavelan_ioctl(struct net_device *	dev,	/* Device on wich the ioctl apply */
   switch(cmd)
     {
     case SIOCETHTOOL:
-      ret = netdev_ethtool_ioctl(dev, (void *) rq->ifr_data);
+      ret = wl_netdev_ethtool_ioctl(dev, (void *) rq->ifr_data);
       break;
 
 #if WIRELESS_EXT <= 12