1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c
index d43b4f6eb4e4..18dff5255670 100644
--- a/drivers/rtc/rtc-twl.c
+++ b/drivers/rtc/rtc-twl.c
@@ -176,6 +176,10 @@ static int set_rtc_irq_bit(unsigned char bit)
         unsigned char val;
         int ret;
 
+        /* if the bit is set, return from here */
+        if (rtc_irq_bits & bit)
+                return 0;
+
         val = rtc_irq_bits | bit;
         val &= ~BIT_RTC_INTERRUPTS_REG_EVERY_M;
         ret = twl_rtc_write_u8(val, REG_RTC_INTERRUPTS_REG);
@@ -193,6 +197,10 @@ static int mask_rtc_irq_bit(unsigned char bit)
         unsigned char val;
         int ret;
 
+        /* if the bit is clear, return from here */
+        if (!(rtc_irq_bits & bit))
+                return 0;
+
         val = rtc_irq_bits & ~bit;
         ret = twl_rtc_write_u8(val, REG_RTC_INTERRUPTS_REG);
         if (ret == 0)