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Subject[PATCH 4/38] arch/parisc: Use time_before, time_before_eq, etc.
From: Julia Lawall <julia@diku.dk>

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>
---
diff -r -u -p a/arch/parisc/kernel/unaligned.c b/arch/parisc/kernel/unaligned.c
--- a/arch/parisc/kernel/unaligned.c 2007-10-22 11:24:58.000000000 +0200
+++ b/arch/parisc/kernel/unaligned.c 2007-12-23 20:33:36.000000000 +0100
@@ -460,7 +460,8 @@ void handle_unaligned(struct pt_regs *re
goto force_sigbus;
}

- if (unaligned_count > 5 && jiffies - last_time > 5*HZ) {
+ if (unaligned_count > 5 &&
+ time_after(jiffies, last_time + 5*HZ)) {
unaligned_count = 0;
last_time = jiffies;
}

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