[PATCH] 3c589_cs.c: use time_before macro

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/pcmcia/3c589_cs.c
===================================================================
--- linux-kj.orig/drivers/net/pcmcia/3c589_cs.c	2005-10-11 18:36:39.000000000 +0400
+++ linux-kj/drivers/net/pcmcia/3c589_cs.c	2005-10-11 18:37:56.000000000 +0400
@@ -39,6 +39,7 @@
 #include <linux/if_arp.h>
 #include <linux/ioport.h>
 #include <linux/bitops.h>
+#include <linux/jiffies.h>
 
 #include <pcmcia/cs_types.h>
 #include <pcmcia/cs.h>
@@ -844,7 +845,7 @@ static void media_check(unsigned long ar
     media = inw(ioaddr+WN4_MEDIA) & 0xc810;
 
     /* Ignore collisions unless we've had no irq's recently */
-    if (jiffies - lp->last_irq < HZ) {
+    if (time_before(jiffies, lp->last_irq + HZ)) {
 	media &= ~0x0010;
     } else {
 	/* Try harder to detect carrier errors */