linux-kernel - [PATCH 2/3] rtc: twl: Simplify RTC interrupt clearing

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Message-Id: <1326967949-8248-3-git-send-email-vbyravarasu@nvidia.com>
Date:	Thu, 19 Jan 2012 15:42:28 +0530
From:	Venu Byravarasu <vbyravarasu@...dia.com>
To:	a.zummo@...ertech.it, rtc-linux@...glegroups.com,
	linux-kernel@...r.kernel.org
Cc:	swarren@...dia.com, Venu Byravarasu <vbyravarasu@...dia.com>
Subject: [PATCH 2/3] rtc: twl: Simplify RTC interrupt clearing

From: Venu Byravarasu <vbyravarasu@...dia.com>

For clearing RTC interrupt, programming ALARM bit only is
sufficient, as all other bits are any way not affected by
writing 0 to them.

Hence removed unwanted OR operation.

Signed-off-by: Venu Byravarasu <vbyravarasu@...dia.com>
---
 drivers/rtc/rtc-twl.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c
index 61ae1b7..1c85443 100644
--- a/drivers/rtc/rtc-twl.c
+++ b/drivers/rtc/rtc-twl.c
@@ -376,7 +376,7 @@ static irqreturn_t twl_rtc_interrupt(int irq, void *rtc)
 	else
 		events |= RTC_IRQF | RTC_UF;
 
-	res = twl_rtc_write_u8(rd_reg | BIT_RTC_STATUS_REG_ALARM_M,
+	res = twl_rtc_write_u8(BIT_RTC_STATUS_REG_ALARM_M,
 				   REG_RTC_STATUS_REG);
 	if (res)
 		goto out;
-- 
1.7.1.1

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