[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/arm/etherh.c b/drivers/net/arm/etherh.c
index 6a93b666eb7..d52deb8d207 100644
--- a/drivers/net/arm/etherh.c
+++ b/drivers/net/arm/etherh.c
@@ -46,6 +46,7 @@
 #include <linux/device.h>
 #include <linux/init.h>
 #include <linux/bitops.h>
+#include <linux/jiffies.h>
 
 #include <asm/system.h>
 #include <asm/ecard.h>
@@ -355,7 +356,7 @@ etherh_block_output (struct net_device *dev, int count, const unsigned char *buf
         dma_start = jiffies;
 
         while ((readb (addr + 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);
                         etherh_reset (dev);