[PATCH 3/3] rtc: twl: Return correct RTC event from ISR

From: Venu Byravarasu
Date: Thu Jan 19 2012 - 05:13:20 EST


From: Venu Byravarasu <vbyravarasu@xxxxxxxxxx>

Following changes are made as part of this change:
1. As TWL RTC supports periodic interrupt, the correct event
should be RTC_PF instead of RTC_UF.
2. No need to initialize variable "events" to 0 & then OR it
with the event values. Hence fixing it.

Signed-off-by: Venu Byravarasu <vbyravarasu@xxxxxxxxxx>
---
drivers/rtc/rtc-twl.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c
index 1c85443..a0236a0 100644
--- a/drivers/rtc/rtc-twl.c
+++ b/drivers/rtc/rtc-twl.c
@@ -357,7 +357,7 @@ out:

static irqreturn_t twl_rtc_interrupt(int irq, void *rtc)
{
- unsigned long events = 0;
+ unsigned long events;
int ret = IRQ_NONE;
int res;
u8 rd_reg;
@@ -372,9 +372,9 @@ static irqreturn_t twl_rtc_interrupt(int irq, void *rtc)
* by reading RTS_INTERRUPTS_REGISTER[IT_TIMER,IT_ALARM]
*/
if (rd_reg & BIT_RTC_STATUS_REG_ALARM_M)
- events |= RTC_IRQF | RTC_AF;
+ events = RTC_IRQF | RTC_AF;
else
- events |= RTC_IRQF | RTC_UF;
+ events = RTC_IRQF | RTC_PF;

res = twl_rtc_write_u8(BIT_RTC_STATUS_REG_ALARM_M,
REG_RTC_STATUS_REG);
--
1.7.1.1

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