[ 11/26] drivers/rtc/rtc-isl1208.c: call rtc_update_irq() from the alarm irq handler

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

3.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jan Luebbe <jlu@pengutronix.de>

commit 72fca4a4b32dc778b5b885c3498700e42b610d49 upstream.

Previously the alarm event was not propagated into the RTC subsystem.
By adding a call to rtc_update_irq, this fixes a timeout problem with
the hwclock utility.

Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/rtc/rtc-isl1208.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/rtc/rtc-isl1208.c
+++ b/drivers/rtc/rtc-isl1208.c
@@ -494,6 +494,7 @@ isl1208_rtc_interrupt(int irq, void *dat
 {
 	unsigned long timeout = jiffies + msecs_to_jiffies(1000);
 	struct i2c_client *client = data;
+	struct rtc_device *rtc = i2c_get_clientdata(client);
 	int handled = 0, sr, err;
 
 	/*
@@ -516,6 +517,8 @@ isl1208_rtc_interrupt(int irq, void *dat
 	if (sr & ISL1208_REG_SR_ALM) {
 		dev_dbg(&client->dev, "alarm!\n");
 
+		rtc_update_irq(rtc, 1, RTC_IRQF | RTC_AF);
+
 		/* Clear the alarm */
 		sr &= ~ISL1208_REG_SR_ALM;
 		sr = i2c_smbus_write_byte_data(client, ISL1208_REG_SR, sr);