[PATCH] drivers/net/*: use time_after() and friends

They deal with wrapping correctly and are nicer to read.  Also make
jiffies-holding variables unsigned long.

Signed-off-by: Marcelo Feitoza Parisi <marcelo@feitoza.com.br>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
diff --git a/drivers/net/tokenring/lanstreamer.c b/drivers/net/tokenring/lanstreamer.c
index 97712c3..c58a4c3 100644
--- a/drivers/net/tokenring/lanstreamer.c
+++ b/drivers/net/tokenring/lanstreamer.c
@@ -122,6 +122,7 @@
 #include <linux/spinlock.h>
 #include <linux/version.h>
 #include <linux/bitops.h>
+#include <linux/jiffies.h>
 
 #include <net/checksum.h>
 
@@ -512,7 +513,7 @@
 
 	while (!((readw(streamer_mmio + SISR)) & SISR_SRB_REPLY)) {
 		msleep_interruptible(100);
-		if (jiffies - t > 40 * HZ) {
+		if (time_after(jiffies, t + 40 * HZ)) {
 			printk(KERN_ERR
 			       "IBM PCI tokenring card not responding\n");
 			release_region(dev->base_addr, STREAMER_IO_SPACE);
diff --git a/drivers/net/tokenring/olympic.c b/drivers/net/tokenring/olympic.c
index 05477d2..23032a7 100644
--- a/drivers/net/tokenring/olympic.c
+++ b/drivers/net/tokenring/olympic.c
@@ -100,6 +100,7 @@
 #include <linux/pci.h>
 #include <linux/spinlock.h>
 #include <linux/bitops.h>
+#include <linux/jiffies.h>
 
 #include <net/checksum.h>
 
@@ -307,7 +308,7 @@
 	t=jiffies;
 	while((readl(olympic_mmio+BCTL)) & BCTL_SOFTRESET) {
 		schedule();		
-		if(jiffies-t > 40*HZ) {
+		if(time_after(jiffies, t + 40*HZ)) {
 			printk(KERN_ERR "IBM PCI tokenring card not responding.\n");
 			return -ENODEV;
 		}
@@ -359,7 +360,7 @@
 		t=jiffies;
 		while (!readl(olympic_mmio+CLKCTL) & CLKCTL_PAUSE) { 
 			schedule() ; 
-			if(jiffies-t > 2*HZ) { 
+			if(time_after(jiffies, t + 2*HZ)) {
 				printk(KERN_ERR "IBM Cardbus tokenring adapter not responsing.\n") ; 
 				return -ENODEV;
 			}
@@ -373,7 +374,7 @@
 	t=jiffies;
 	while(!((readl(olympic_mmio+SISR_RR)) & SISR_SRB_REPLY)) {
 		schedule();		
-		if(jiffies-t > 15*HZ) {
+		if(time_after(jiffies, t + 15*HZ)) {
 			printk(KERN_ERR "IBM PCI tokenring card not responding.\n");
 			return -ENODEV;
 		}
@@ -519,7 +520,7 @@
             			olympic_priv->srb_queued=0;
             			break;
         		}
-			if ((jiffies-t) > 10*HZ) { 
+			if (time_after(jiffies, t + 10*HZ)) {
 				printk(KERN_WARNING "%s: SRB timed out. \n",dev->name) ; 
 				olympic_priv->srb_queued=0;
 				break ;