linux-kernel - [PATCH] drivers/net/ax88796.c: Use time

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Date:	Mon, 17 Mar 2008 11:36:28 +0200
From:	S.Çağlar Onur <caglar@...dus.org.tr>
To:	linux-kernel@...r.kernel.org
Cc:	netdev@...r.kernel.org, Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] drivers/net/ax88796.c: Use time_* macros

The functions time_before, time_before_eq, time_after, and time_after_eq are more robust for comparing jiffies against other values.

So following patch implements usage of the time_after() macro, defined at linux/jiffies.h, which deals with wrapping correctly

Cc: netdev@...r.kernel.org
Cc: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: S.Çağlar Onur <caglar@...dus.org.tr>
---
 drivers/net/ax88796.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ax88796.c b/drivers/net/ax88796.c
index 194949a..0f823d7 100644
--- a/drivers/net/ax88796.c
+++ b/drivers/net/ax88796.c
@@ -11,6 +11,7 @@
  * published by the Free Software Foundation.
 */
 
+#include <linux/jiffies.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
@@ -151,7 +152,7 @@ static void ax_reset_8390(struct net_device *dev)
 
 	/* This check _should_not_ be necessary, omit eventually. */
 	while ((ei_inb(addr + EN0_ISR) & ENISR_RESET) == 0) {
-		if (jiffies - reset_start_time > 2*HZ/100) {
+		if (time_after(jiffies, reset_start_time + 2 * HZ/100)) {
 			dev_warn(&ax->dev->dev, "%s: %s did not complete.\n",
 			       __FUNCTION__, dev->name);
 			break;
@@ -287,7 +288,7 @@ static void ax_block_output(struct net_device *dev, int count,
 	dma_start = jiffies;
 
 	while ((ei_inb(nic_base + EN0_ISR) & ENISR_RDC) == 0) {
-		if (jiffies - dma_start > 2*HZ/100) {		/* 20ms */
+		if (time_after(jiffies, dma_start + 2 * HZ/100)) {		/* 20ms */
 			dev_warn(&ax->dev->dev,
 				 "%s: timeout waiting for Tx RDC.\n", dev->name);
 			ax_reset_8390(dev);
-- 
1.5.4.3

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