1 files changed, 1 insertions, 1 deletions

diff --git a/arch/arm/plat-s5pc1xx/irq.c b/arch/arm/plat-s5pc1xx/irq.c
index 80d6dd942cb8..e44fd04ef333 100644
--- a/arch/arm/plat-s5pc1xx/irq.c
+++ b/arch/arm/plat-s5pc1xx/irq.c
@@ -79,7 +79,7 @@ static void s3c_irq_timer_ack(unsigned int irq)
 {
         u32 reg = __raw_readl(S3C64XX_TINT_CSTAT);
 
-        reg &= 0x1f;
+        reg &= 0x1f;  /* mask out pending interrupts */
         reg |= (1 << 5) << (irq - IRQ_TIMER0);
         __raw_writel(reg, S3C64XX_TINT_CSTAT);
 }