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author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2009-12-02 23:38:13 -0800 |
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committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2009-12-02 23:38:13 -0800 |
commit | 467832032cc07626880363efa8625719c16c04eb (patch) | |
tree | ee9a62c04f0b3106e412bc1b2dd1cea5566d5ca7 /drivers/rtc/rtc-coh901331.c | |
parent | 66d2a5952eab875f1286e04f738ef029afdaf013 (diff) | |
parent | 22763c5cf3690a681551162c15d34d935308c8d7 (diff) |
Merge commit 'v2.6.32' into next
Diffstat (limited to 'drivers/rtc/rtc-coh901331.c')
-rw-r--r-- | drivers/rtc/rtc-coh901331.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-coh901331.c b/drivers/rtc/rtc-coh901331.c index 7fe1fa26c52..03ea530981d 100644 --- a/drivers/rtc/rtc-coh901331.c +++ b/drivers/rtc/rtc-coh901331.c @@ -58,7 +58,16 @@ static irqreturn_t coh901331_interrupt(int irq, void *data) clk_enable(rtap->clk); /* Ack IRQ */ writel(1, rtap->virtbase + COH901331_IRQ_EVENT); + /* + * Disable the interrupt. This is necessary because + * the RTC lives on a lower-clocked line and will + * not release the IRQ line until after a few (slower) + * clock cycles. The interrupt will be re-enabled when + * a new alarm is set anyway. + */ + writel(0, rtap->virtbase + COH901331_IRQ_MASK); clk_disable(rtap->clk); + /* Set alarm flag */ rtc_update_irq(rtap->rtc, 1, RTC_AF); @@ -128,6 +137,8 @@ static int coh901331_alarm_irq_enable(struct device *dev, unsigned int enabled) else writel(0, rtap->virtbase + COH901331_IRQ_MASK); clk_disable(rtap->clk); + + return 0; } static struct rtc_class_ops coh901331_ops = { |