[PATCH] drivers/net/shaper.c: use time_after()

From: Marcelo Feitoza Parisi <marcelo@feitoza.com.br>

It deals with wrapping correctly and is nicer to read.

Signed-off-by: Marcelo Feitoza Parisi <marcelo@feitoza.com.br>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

Index: linux-kj/drivers/net/shaper.c
===================================================================
--- linux-kj.orig/drivers/net/shaper.c	2005-12-05 13:17:53.000000000 +0300
+++ linux-kj/drivers/net/shaper.c	2005-12-05 13:19:13.000000000 +0300
@@ -83,6 +83,7 @@
 #include <linux/if_arp.h>
 #include <linux/init.h>
 #include <linux/if_shaper.h>
+#include <linux/jiffies.h>
 
 #include <net/dst.h>
 #include <net/arp.h>
@@ -168,7 +169,7 @@ static int shaper_start_xmit(struct sk_b
 		/*
 		 *	Queue over time. Spill packet.
 		 */
-		if(SHAPERCB(skb)->shapeclock-jiffies > SHAPER_LATENCY) {
+		if(time_after(SHAPERCB(skb)->shapeclock,jiffies + SHAPER_LATENCY)) {
 			dev_kfree_skb(skb);
 			shaper->stats.tx_dropped++;
 		} else