diff options
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 7fe1fa26c52c..03ea530981d1 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) | |||
58 | clk_enable(rtap->clk); | 58 | clk_enable(rtap->clk); |
59 | /* Ack IRQ */ | 59 | /* Ack IRQ */ |
60 | writel(1, rtap->virtbase + COH901331_IRQ_EVENT); | 60 | writel(1, rtap->virtbase + COH901331_IRQ_EVENT); |
61 | /* | ||
62 | * Disable the interrupt. This is necessary because | ||
63 | * the RTC lives on a lower-clocked line and will | ||
64 | * not release the IRQ line until after a few (slower) | ||
65 | * clock cycles. The interrupt will be re-enabled when | ||
66 | * a new alarm is set anyway. | ||
67 | */ | ||
68 | writel(0, rtap->virtbase + COH901331_IRQ_MASK); | ||
61 | clk_disable(rtap->clk); | 69 | clk_disable(rtap->clk); |
70 | |||
62 | /* Set alarm flag */ | 71 | /* Set alarm flag */ |
63 | rtc_update_irq(rtap->rtc, 1, RTC_AF); | 72 | rtc_update_irq(rtap->rtc, 1, RTC_AF); |
64 | 73 | ||
@@ -128,6 +137,8 @@ static int coh901331_alarm_irq_enable(struct device *dev, unsigned int enabled) | |||
128 | else | 137 | else |
129 | writel(0, rtap->virtbase + COH901331_IRQ_MASK); | 138 | writel(0, rtap->virtbase + COH901331_IRQ_MASK); |
130 | clk_disable(rtap->clk); | 139 | clk_disable(rtap->clk); |
140 | |||
141 | return 0; | ||
131 | } | 142 | } |
132 | 143 | ||
133 | static struct rtc_class_ops coh901331_ops = { | 144 | static struct rtc_class_ops coh901331_ops = { |