From: Julia Lawall <julia@diku.dk>
Date: Wed, 30 Jan 2008 12:32:18 +0000 (+0100)
Subject: arch/x86/kernel/apm_32.c: use time_before, time_before_eq,
X-Git-Tag: v2.6.25-rc1~1143^2~457
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4f2479f03c06e29d7d9e1e02191f8b5ba8ad4eef;p=linux-2.6

arch/x86/kernel/apm_32.c: use time_before, time_before_eq,

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

A simplified version of the semantic patch making this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@ change_compare_np @
expression E;
@@

(
- jiffies <= E
+ time_before_eq(jiffies,E)
|
- jiffies >= E
+ time_after_eq(jiffies,E)
|
- jiffies < E
+ time_before(jiffies,E)
|
- jiffies > E
+ time_after(jiffies,E)
)

@ include depends on change_compare_np @
@@

#include <linux/jiffies.h>

@ no_include depends on !include && change_compare_np @
@@

  #include <linux/...>
+ #include <linux/jiffies.h>
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

diff --git a/arch/x86/kernel/apm_32.c b/arch/x86/kernel/apm_32.c
index e32f6c37db..2467df7eca 100644
--- a/arch/x86/kernel/apm_32.c
+++ b/arch/x86/kernel/apm_32.c
@@ -227,6 +227,7 @@
 #include <linux/dmi.h>
 #include <linux/suspend.h>
 #include <linux/kthread.h>
+#include <linux/jiffies.h>
 
 #include <asm/system.h>
 #include <asm/uaccess.h>
@@ -1287,7 +1288,7 @@ static void check_events(void)
 				       "event 0x%02x\n", event);
 		}
 		if (ignore_bounce
-		    && ((jiffies - last_resume) > bounce_interval))
+		    && (time_after(jiffies, last_resume + bounce_interval)))
 			ignore_bounce = 0;
 
 		switch (event) {