linux-kernel - [PATCH 6/7] mfd: tps65910: Use devm_mfd_add_devices and devm_regmap_add_irq

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Date:	Thu, 21 Apr 2016 17:55:57 +0530
From:	Laxman Dewangan <ldewangan@...dia.com>
To:	<lee.jones@...aro.org>, <milo.kim@...com>, <cw00.choi@...sung.com>,
	<k.kozlowski@...sung.com>
CC:	<sbkim73@...sung.com>, <tony@...mide.com>,
	<linux-kernel@...r.kernel.org>,
	<linux-samsung-soc@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	"Laxman Dewangan" <ldewangan@...dia.com>
Subject: [PATCH 6/7] mfd: tps65910: Use devm_mfd_add_devices and devm_regmap_add_irq_chip

Use devm_mfd_add_devices() for adding MFD child devices and
devm_regmap_add_irq_chip() for IRQ chip registration.

This reduces the error code path and .remove callback for removing
MFD child devices and deleting IRQ chip data.

Signed-off-by: Laxman Dewangan <ldewangan@...dia.com>
CC: Tony Lindgren <tony@...mide.com>
CC: linux-omap@...r.kernel.org
---
 drivers/mfd/tps65910.c | 25 ++++---------------------
 1 file changed, 4 insertions(+), 21 deletions(-)

diff --git a/drivers/mfd/tps65910.c b/drivers/mfd/tps65910.c
index 8086e5d..11cab15 100644
--- a/drivers/mfd/tps65910.c
+++ b/drivers/mfd/tps65910.c
@@ -252,9 +252,10 @@ static int tps65910_irq_init(struct tps65910 *tps65910, int irq,
 	}
 
 	tps65910->chip_irq = irq;
-	ret = regmap_add_irq_chip(tps65910->regmap, tps65910->chip_irq,
-		IRQF_ONESHOT, pdata->irq_base,
-		tps6591x_irqs_chip, &tps65910->irq_data);
+	ret = devm_regmap_add_irq_chip(tps65910->dev, tps65910->regmap,
+				       tps65910->chip_irq,
+				       IRQF_ONESHOT, pdata->irq_base,
+				       tps6591x_irqs_chip, &tps65910->irq_data);
 	if (ret < 0) {
 		dev_warn(tps65910->dev, "Failed to add irq_chip %d\n", ret);
 		tps65910->chip_irq = 0;
@@ -262,13 +263,6 @@ static int tps65910_irq_init(struct tps65910 *tps65910, int irq,
 	return ret;
 }
 
-static int tps65910_irq_exit(struct tps65910 *tps65910)
-{
-	if (tps65910->chip_irq > 0)
-		regmap_del_irq_chip(tps65910->chip_irq, tps65910->irq_data);
-	return 0;
-}
-
 static bool is_volatile_reg(struct device *dev, unsigned int reg)
 {
 	struct tps65910 *tps65910 = dev_get_drvdata(dev);
@@ -516,22 +510,12 @@ static int tps65910_i2c_probe(struct i2c_client *i2c,
 				   regmap_irq_get_domain(tps65910->irq_data));
 	if (ret < 0) {
 		dev_err(&i2c->dev, "mfd_add_devices failed: %d\n", ret);
-		tps65910_irq_exit(tps65910);
 		return ret;
 	}
 
 	return ret;
 }
 
-static int tps65910_i2c_remove(struct i2c_client *i2c)
-{
-	struct tps65910 *tps65910 = i2c_get_clientdata(i2c);
-
-	tps65910_irq_exit(tps65910);
-
-	return 0;
-}
-
 static const struct i2c_device_id tps65910_i2c_id[] = {
        { "tps65910", TPS65910 },
        { "tps65911", TPS65911 },
@@ -546,7 +530,6 @@ static struct i2c_driver tps65910_i2c_driver = {
 		   .of_match_table = of_match_ptr(tps65910_of_match),
 	},
 	.probe = tps65910_i2c_probe,
-	.remove = tps65910_i2c_remove,
 	.id_table = tps65910_i2c_id,
 };
 
-- 
2.1.4