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| author | Lennert Buytenhek <buytenh@wantstofly.org> | 2006-06-22 10:30:53 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-06-22 10:30:53 +0100 |
| commit | f869afab8f36c5f8561557f74b4b9846719092da (patch) | |
| tree | 6a23d7981a3b06b9cd40ad99c1543d22f6a1d528 /arch/arm/mach-ixp23xx | |
| parent | 84b61f6d3ad8a5761e61d83076588f64a289a574 (diff) | |
| download | lwn-f869afab8f36c5f8561557f74b4b9846719092da.tar.gz lwn-f869afab8f36c5f8561557f74b4b9846719092da.zip | |
[ARM] 3616/1: fix timer handler wrap logic for a number of platforms
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>
Diffstat (limited to 'arch/arm/mach-ixp23xx')
| -rw-r--r-- | arch/arm/mach-ixp23xx/core.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/mach-ixp23xx/core.c b/arch/arm/mach-ixp23xx/core.c index affd1d5d7440..e2aad734080e 100644 --- a/arch/arm/mach-ixp23xx/core.c +++ b/arch/arm/mach-ixp23xx/core.c @@ -334,7 +334,7 @@ void __init ixp23xx_init_irq(void) /************************************************************************* * Timer-tick functions for IXP23xx *************************************************************************/ -#define CLOCK_TICKS_PER_USEC CLOCK_TICK_RATE / (USEC_PER_SEC) +#define CLOCK_TICKS_PER_USEC (CLOCK_TICK_RATE / USEC_PER_SEC) static unsigned long next_jiffy_time; @@ -353,7 +353,7 @@ ixp23xx_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) { /* Clear Pending Interrupt by writing '1' to it */ *IXP23XX_TIMER_STATUS = IXP23XX_TIMER1_INT_PEND; - while ((*IXP23XX_TIMER_CONT - next_jiffy_time) > LATCH) { + while ((signed long)(*IXP23XX_TIMER_CONT - next_jiffy_time) >= LATCH) { timer_tick(regs); next_jiffy_time += LATCH; } |