From c5983191362af5ef7a627d8811a45f0fd01a3582 Mon Sep 17 00:00:00 2001
From: Nishanth Menon <nm@ti.com>
Date: Tue, 23 Jun 2015 11:15:11 -0500
Subject: rtc: ds1307: Switch to managed irq allocation

Since we are not doing anything fancy in remove function that requires
us to sequence IRQ free operation, we might as well switch over to devm_
equivalent of managed IRQ allocation and remove the explicit free_irq
since it'd be done automatically at remove.

Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c
index 8ea496e5..0a98d8a 100644
--- a/drivers/rtc/rtc-ds1307.c
+++ b/drivers/rtc/rtc-ds1307.c
@@ -1156,9 +1156,10 @@ read_rtc:
 	}
 
 	if (want_irq) {
-		err = request_threaded_irq(client->irq, NULL, irq_handler,
-					   IRQF_SHARED | IRQF_ONESHOT,
-					   ds1307->rtc->name, client);
+		err = devm_request_threaded_irq(&client->dev,
+						client->irq, NULL, irq_handler,
+						IRQF_SHARED | IRQF_ONESHOT,
+						ds1307->rtc->name, client);
 		if (err) {
 			client->irq = 0;
 			dev_err(&client->dev, "unable to request IRQ!\n");
@@ -1212,9 +1213,6 @@ static int ds1307_remove(struct i2c_client *client)
 {
 	struct ds1307 *ds1307 = i2c_get_clientdata(client);
 
-	if (test_and_clear_bit(HAS_ALARM, &ds1307->flags))
-		free_irq(client->irq, client);
-
 	if (test_and_clear_bit(HAS_NVRAM, &ds1307->flags))
 		sysfs_remove_bin_file(&client->dev.kobj, ds1307->nvram);
 
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