[PATCH] drivers/net/ns83820.c: use time_after_eq

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/ns83820.c
===================================================================
--- linux-kj.orig/drivers/net/ns83820.c	2005-12-05 13:17:53.000000000 +0300
+++ linux-kj/drivers/net/ns83820.c	2005-12-05 13:19:10.000000000 +0300
@@ -115,6 +115,7 @@
 #include <linux/ethtool.h>
 #include <linux/timer.h>
 #include <linux/if_vlan.h>
+#include <linux/jiffies.h>
 
 #include <asm/io.h>
 #include <asm/uaccess.h>
@@ -1606,7 +1607,7 @@ static void ns83820_run_bist(struct net_
 {
 	struct ns83820 *dev = PRIV(ndev);
 	int timed_out = 0;
-	long start;
+	unsigned long start;
 	u32 status;
 	int loops = 0;
 
@@ -1624,7 +1625,7 @@ static void ns83820_run_bist(struct net_
 			break;
 		if (status & fail)
 			break;
-		if ((jiffies - start) >= HZ) {
+		if (time_after_eq(jiffies, start + HZ)) {
 			timed_out = 1;
 			break;
 		}