From e6229bec25be4ba00f31dd26e25721cc96c22262 Mon Sep 17 00:00:00 2001
From: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Date: Thu, 18 Jun 2009 16:49:09 -0700
Subject: rtc: make rtc_update_irq callable with irqs enabled

The rtc_update_irq() might be called with irqs enabled, if a interrupt
handler was registered without IRQF_DISABLED.  Use
spin_lock_irqsave/spin_unlock_irqrestore instead of spin_lock/spin_unlock.

Also update kerneldoc and drivers which do extra work to follow the
current interface spec, as suggestted by David Brownell.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 drivers/rtc/rtc-ds1305.c | 3 ---
 1 file changed, 3 deletions(-)

(limited to 'drivers/rtc/rtc-ds1305.c')

diff --git a/drivers/rtc/rtc-ds1305.c b/drivers/rtc/rtc-ds1305.c
index fc372df6534b..8f410e59d9f5 100644
--- a/drivers/rtc/rtc-ds1305.c
+++ b/drivers/rtc/rtc-ds1305.c
@@ -499,10 +499,7 @@ static void ds1305_work(struct work_struct *work)
 	if (!test_bit(FLAG_EXITING, &ds1305->flags))
 		enable_irq(spi->irq);
 
-	/* rtc_update_irq() requires an IRQ-disabled context */
-	local_irq_disable();
 	rtc_update_irq(ds1305->rtc, 1, RTC_AF | RTC_IRQF);
-	local_irq_enable();
 }
 
 /*
-- 
cgit