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authorAtsushi Nemoto <anemo@mba.ocn.ne.jp>2009-06-19 03:49:09 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-20 03:46:05 +0400
commite6229bec25be4ba00f31dd26e25721cc96c22262 (patch)
treea27e4c51dd8b9aaeb589a147a22bbd06bde77cf0 /drivers/rtc/rtc-ds1374.c
parent575c5807f6842422e9fe2432fd48dfcc1d7aef41 (diff)
downloadlinux-e6229bec25be4ba00f31dd26e25721cc96c22262.tar.xz
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>
Diffstat (limited to 'drivers/rtc/rtc-ds1374.c')
-rw-r--r--drivers/rtc/rtc-ds1374.c5
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/rtc/rtc-ds1374.c b/drivers/rtc/rtc-ds1374.c
index 4d32e328f6cd..32b27739ec2a 100644
--- a/drivers/rtc/rtc-ds1374.c
+++ b/drivers/rtc/rtc-ds1374.c
@@ -296,12 +296,7 @@ static void ds1374_work(struct work_struct *work)
control &= ~(DS1374_REG_CR_WACE | DS1374_REG_CR_AIE);
i2c_smbus_write_byte_data(client, DS1374_REG_CR, control);
- /* rtc_update_irq() assumes that it is called
- * from IRQ-disabled context.
- */
- local_irq_disable();
rtc_update_irq(ds1374->rtc, 1, RTC_AF | RTC_IRQF);
- local_irq_enable();
}
out: