[PATCH] zorro8390: 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/zorro8390.c
===================================================================
--- linux-kj.orig/drivers/net/zorro8390.c	2005-10-11 18:36:43.000000000 +0400
+++ linux-kj/drivers/net/zorro8390.c	2005-10-11 18:37:32.000000000 +0400
@@ -27,6 +27,7 @@
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/zorro.h>
+#include <linux/jiffies.h>
 
 #include <asm/system.h>
 #include <asm/irq.h>
@@ -151,7 +152,7 @@ static int __devinit zorro8390_init(stru
 	z_writeb(z_readb(ioaddr + NE_RESET), ioaddr + NE_RESET);
 
 	while ((z_readb(ioaddr + NE_EN0_ISR) & ENISR_RESET) == 0)
-	    if (jiffies - reset_start_time > 2*HZ/100) {
+	    if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
 		printk(KERN_WARNING " not found (no reset ack).\n");
 		return -ENODEV;
 	    }
@@ -273,7 +274,7 @@ static void zorro8390_reset_8390(struct 
 
     /* This check _should_not_ be necessary, omit eventually. */
     while ((z_readb(NE_BASE+NE_EN0_ISR) & ENISR_RESET) == 0)
-	if (jiffies - reset_start_time > 2*HZ/100) {
+	if (time_after(jiffies, reset_start_time + 2*HZ/100)) {
 	    printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n",
 		   dev->name);
 	    break;
@@ -400,7 +401,7 @@ static void zorro8390_block_output(struc
     dma_start = jiffies;
 
     while ((z_readb(NE_BASE + NE_EN0_ISR) & ENISR_RDC) == 0)
-	if (jiffies - dma_start > 2*HZ/100) {		/* 20ms */
+	if (time_after(jiffies, dma_start + 2*HZ/100)) {	/* 20ms */
 		printk(KERN_ERR "%s: timeout waiting for Tx RDC.\n",
 		       dev->name);
 		zorro8390_reset_8390(dev);