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

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>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/rtc/rtc-isl1208.c b/drivers/rtc/rtc-isl1208.c
index afb7cfa85ccc..c016ad81767a 100644
--- a/drivers/rtc/rtc-isl1208.c
+++ b/drivers/rtc/rtc-isl1208.c
@@ -506,6 +506,7 @@ isl1208_rtc_interrupt(int irq, void *data)
 {
         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;
 
         /*
@@ -528,6 +529,8 @@ isl1208_rtc_interrupt(int irq, void *data)
         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);