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[ARM] 3616/1: fix timer handler wrap logic for a number of platforms

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Patch from Lennert Buytenhek

A couple of platforms aren't using the right comparison type in their
timer interrupt handlers (as we're comparing two wrapping timestamps,
we need a bmi/bpl-type comparison, not an unsigned comparison) -- this
patch fixes them up.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Lennert Buytenhek
2006-06-22 10:30:53 +01:00
committed by Russell King
parent 84b61f6d3a
commit f869afab8f
5 changed files with 9 additions and 6 deletions
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3
arch/arm/mach-ixp2000/core.c
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@@ -211,7 +211,8 @@ static int ixp2000_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
/* clear timer 1 */
ixp2000_reg_wrb(IXP2000_T1_CLR, 1);
while ((next_jiffy_time - *missing_jiffy_timer_csr) > ticks_per_jiffy) {
while ((signed long)(next_jiffy_time - *missing_jiffy_timer_csr)
>= ticks_per_jiffy) {
timer_tick(regs);
next_jiffy_time -= ticks_per_jiffy;
}