drivers/rtc/rtc-twl.c: return correct RTC event from ISR

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@nvidia.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c
index cedb6c145fc4..4c2c6df2a9ef 100644
--- a/drivers/rtc/rtc-twl.c
+++ b/drivers/rtc/rtc-twl.c
@@ -365,7 +365,7 @@ 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;
@@ -380,9 +380,9 @@ 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);