[PATCH 3/7] mfd: max77686: Use devm_mfd_add_devices and devm_regmap_add_irq_chip

Laxman Dewangan
2016-04-21T12:38:16Z

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@nvidia.com>
CC: Chanwoo Choi <cw00.choi@samsung.com>
CC: Krzysztof Kozlowski <k.kozlowski@samsung.com>
---
drivers/mfd/max77686.c | 31 ++++++++-----------------------
1 file changed, 8 insertions(+), 23 deletions(-)

diff --git a/drivers/mfd/max77686.c b/drivers/mfd/max77686.c
index 7a0457e..7b68ed7 100644
--- a/drivers/mfd/max77686.c
+++ b/drivers/mfd/max77686.c
@@ -230,38 +230,24 @@ static int max77686_i2c_probe(struct i2c_client *i2c,
return -ENODEV;
}

- ret = regmap_add_irq_chip(max77686->regmap, max77686->irq,
- IRQF_TRIGGER_FALLING | IRQF_ONESHOT |
- IRQF_SHARED, 0, irq_chip,
- &max77686->irq_data);
+ ret = devm_regmap_add_irq_chip(&i2c->dev, max77686->regmap,
+ max77686->irq,
+ IRQF_TRIGGER_FALLING | IRQF_ONESHOT |
+ IRQF_SHARED, 0, irq_chip,
+ &max77686->irq_data);
if (ret < 0) {
dev_err(&i2c->dev, "failed to add PMIC irq chip: %d\n", ret);
return ret;
}

- ret = mfd_add_devices(max77686->dev, -1, cells, n_devs, NULL, 0, NULL);
+ ret = devm_mfd_add_devices(max77686->dev, -1, cells, n_devs, NULL,
+ 0, NULL);
if (ret < 0) {
dev_err(&i2c->dev, "failed to add MFD devices: %d\n", ret);
- goto err_del_irqc;
+ return ret;
}

return 0;
-
-err_del_irqc:
- regmap_del_irq_chip(max77686->irq, max77686->irq_data);
-
- return ret;
-}
-
-static int max77686_i2c_remove(struct i2c_client *i2c)
-{
- struct max77686_dev *max77686 = i2c_get_clientdata(i2c);
-
- mfd_remove_devices(max77686->dev);
-
- regmap_del_irq_chip(max77686->irq, max77686->irq_data);
-
- return 0;
}

static const struct i2c_device_id max77686_i2c_id[] = {
@@ -317,7 +303,6 @@ static struct i2c_driver max77686_i2c_driver = {
.of_match_table = of_match_ptr(max77686_pmic_dt_match),
},
.probe = max77686_i2c_probe,
- .remove = max77686_i2c_remove,
.id_table = max77686_i2c_id,
};

--
2.1.4