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| author | Bernhard Walle <bwalle@suse.de> | 2008-01-15 16:44:38 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-15 16:44:38 +0100 |
| commit | 8ee291f87c5dcebcf9c3a0ee4e021586897db364 (patch) | |
| tree | e25b0847beb1834f6166458d7eaf1ae4bfb0944d | |
| parent | d43a3312c77eb6bbf71fbadefb1683f6d197bf91 (diff) | |
| download | op-kernel-dev-8ee291f87c5dcebcf9c3a0ee4e021586897db364.zip op-kernel-dev-8ee291f87c5dcebcf9c3a0ee4e021586897db364.tar.gz | |
x86: fix RTC_AIE with CONFIG_HPET_EMULATE_RTC
In the current code, RTC_AIE doesn't work if the RTC relies on
CONFIG_HPET_EMULATE_RTC because the code sets the RTC_AIE flag in
hpet_set_rtc_irq_bit(). The interrupt handles does accidentally check
for RTC_PIE and not RTC_AIE when comparing the time which was set in
hpet_set_alarm_time().
I now verified on a test system here that without the patch applied,
the attached test program fails on a system that has HPET with
2.6.24-rc7-default. That's not critical since I guess the problem has
been there for several kernel releases, but as the fix is quite
obvious.
Configuration is CONFIG_RTC=y and CONFIG_HPET_EMULATE_RTC=y.
Signed-off-by: Bernhard Walle <bwalle@suse.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | arch/x86/kernel/hpet.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c index 4a86ffd..2f99ee2 100644 --- a/arch/x86/kernel/hpet.c +++ b/arch/x86/kernel/hpet.c @@ -657,7 +657,7 @@ irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id) hpet_pie_count = 0; } - if (hpet_rtc_flags & RTC_PIE && + if (hpet_rtc_flags & RTC_AIE && (curr_time.tm_sec == hpet_alarm_time.tm_sec) && (curr_time.tm_min == hpet_alarm_time.tm_min) && (curr_time.tm_hour == hpet_alarm_time.tm_hour)) |
