[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/pcmcia/3c589_cs.c b/drivers/net/pcmcia/3c589_cs.c
index 1c3c9c666f74..c4abc9365f8e 100644
--- a/drivers/net/pcmcia/3c589_cs.c
+++ b/drivers/net/pcmcia/3c589_cs.c
@@ -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>
@@ -796,7 +797,7 @@ static void media_check(unsigned long arg)
     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 */