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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-01-23 12:34:16 (GMT) |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-01-26 15:07:57 (GMT) |
| commit | dd01b2fc79a567ae03d0c96ddf61eb4de729d36d (patch) | |
| tree | 3595a660158448fdb2e119affe9ea56c3ff1d5f9 /arch/arm/mach-pxa/time.c | |
| parent | fd8e7af8d0fd3febc87607214d5dd545089edc71 (diff) | |
| download | linux-dd01b2fc79a567ae03d0c96ddf61eb4de729d36d.tar.xz | |
[ARM] pxa: fix PXA27x resume
When PXA27x wakes up, tick_resume_oneshot() tries to set a timer
interrupt to occur immediately. Since PXA27x requires at least
MIN_OSCR_DELTA, this causes us to flag an error.
tick_program_event() then increments the next event time by
min_delta_ns. However, by the time we get back to programming
the next event, the OSCR has incremented such that we fail again.
We repeatedly retry, but the OSCR is too fast for us - we never
catch up, so we never break out of the loop - resulting in us
never apparantly resuming.
Fix this by doubling min_delta_ns.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-pxa/time.c')
| -rw-r--r-- | arch/arm/mach-pxa/time.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/mach-pxa/time.c b/arch/arm/mach-pxa/time.c index ac0bbad..7b7c0179 100644 --- a/arch/arm/mach-pxa/time.c +++ b/arch/arm/mach-pxa/time.c @@ -169,7 +169,7 @@ static void __init pxa_timer_init(void) ckevt_pxa_osmr0.max_delta_ns = clockevent_delta2ns(0x7fffffff, &ckevt_pxa_osmr0); ckevt_pxa_osmr0.min_delta_ns = - clockevent_delta2ns(MIN_OSCR_DELTA, &ckevt_pxa_osmr0) + 1; + clockevent_delta2ns(MIN_OSCR_DELTA * 2, &ckevt_pxa_osmr0) + 1; cksrc_pxa_oscr0.mult = clocksource_hz2mult(clock_tick_rate, cksrc_pxa_oscr0.shift); |