[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>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/net/arcnet/arcnet.c b/drivers/net/arcnet/arcnet.c
index 12ef52c193a3..409d61d8d083 100644
--- a/drivers/net/arcnet/arcnet.c
+++ b/drivers/net/arcnet/arcnet.c
@@ -52,6 +52,7 @@
 #include <net/arp.h>
 #include <linux/init.h>
 #include <linux/arcdevice.h>
+#include <linux/jiffies.h>
 
 /* "do nothing" functions for protocol drivers */
 static void null_rx(struct net_device *dev, int bufnum,
@@ -733,7 +734,7 @@ static void arcnet_timeout(struct net_device *dev)
         
         spin_unlock_irqrestore(&lp->lock, flags);
 
-        if (jiffies - lp->last_timeout > 10*HZ) {
+        if (time_after(jiffies, lp->last_timeout + 10*HZ)) {
                 BUGMSG(D_EXTRA, "tx timed out%s (status=%Xh, intmask=%Xh, dest=%02Xh)\n",
                        msg, status, lp->intmask, lp->lasttrans_dest);
                 lp->last_timeout = jiffies;