linux-kernel - [PATCH V2 2/5] drivers/rtc/rtc-ds1307.c: Switch to managed irq allocation

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Date:	Tue, 23 Jun 2015 11:15:11 -0500
From:	Nishanth Menon <nm@...com>
To:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Alessandro Zummo <a.zummo@...ertech.it>
CC:	<linux-kernel@...r.kernel.org>, <rtc-linux@...glegroups.com>,
	<linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <balbi@...com>,
	<grygorii.strashko@...com>, Nishanth Menon <nm@...com>
Subject: [PATCH V2 2/5] drivers/rtc/rtc-ds1307.c: 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@...com>
---
 drivers/rtc/rtc-ds1307.c |   10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c
index 8ea496e54a2e..0a98d8a52791 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);
 
-- 
1.7.9.5

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