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Message-Id: <20191007024131.22708-1-brgl@bgdev.pl>
Date: Mon, 7 Oct 2019 04:41:31 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Jonathan Cameron <jic23@...nel.org>,
Hartmut Knaack <knaack.h@....de>,
Lars-Peter Clausen <lars@...afoo.de>,
Peter Meerwald-Stadler <pmeerw@...erw.net>
Cc: linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: [PATCH v2] iio: pressure: bmp280: use devm action and remove labels from probe
From: Bartosz Golaszewski <bgolaszewski@...libre.com>
We can drop some duplicate code if we use devm_action for disabling
regulators and pm and the managed variant of iio_device_register().
This allows us to completely remove all remove() callbacks from both
i2c and spi code.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
---
v1 -> v2:
- squash the patches using devm_iio_device_register() and devm_action
to keep the changes bisectable
drivers/iio/pressure/bmp280-core.c | 62 +++++++++++++++---------------
drivers/iio/pressure/bmp280-i2c.c | 6 ---
drivers/iio/pressure/bmp280-spi.c | 6 ---
drivers/iio/pressure/bmp280.h | 1 -
4 files changed, 30 insertions(+), 45 deletions(-)
diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c
index c2988dbdb1a7..79254dd26dfd 100644
--- a/drivers/iio/pressure/bmp280-core.c
+++ b/drivers/iio/pressure/bmp280-core.c
@@ -984,6 +984,22 @@ static int bmp085_fetch_eoc_irq(struct device *dev,
return 0;
}
+static void bmp280_pm_disable(void *data)
+{
+ struct device *dev = data;
+
+ pm_runtime_get_sync(dev);
+ pm_runtime_put_noidle(dev);
+ pm_runtime_disable(dev);
+}
+
+static void bmp280_regulators_disable(void *data)
+{
+ struct regulator_bulk_data *supplies = data;
+
+ regulator_bulk_disable(BMP280_NUM_SUPPLIES, supplies);
+}
+
int bmp280_common_probe(struct device *dev,
struct regmap *regmap,
unsigned int chip,
@@ -1055,6 +1071,11 @@ int bmp280_common_probe(struct device *dev,
return ret;
}
+ ret = devm_add_action_or_reset(dev, bmp280_regulators_disable,
+ data->supplies);
+ if (ret)
+ return ret;
+
/* Wait to make sure we started up properly */
usleep_range(data->start_up_time, data->start_up_time + 100);
@@ -1069,17 +1090,16 @@ int bmp280_common_probe(struct device *dev,
data->regmap = regmap;
ret = regmap_read(regmap, BMP280_REG_ID, &chip_id);
if (ret < 0)
- goto out_disable_regulators;
+ return ret;
if (chip_id != chip) {
dev_err(dev, "bad chip id: expected %x got %x\n",
chip, chip_id);
- ret = -EINVAL;
- goto out_disable_regulators;
+ return -EINVAL;
}
ret = data->chip_info->chip_config(data);
if (ret < 0)
- goto out_disable_regulators;
+ return ret;
dev_set_drvdata(dev, indio_dev);
@@ -1093,14 +1113,14 @@ int bmp280_common_probe(struct device *dev,
if (ret < 0) {
dev_err(data->dev,
"failed to read calibration coefficients\n");
- goto out_disable_regulators;
+ return ret;
}
} else if (chip_id == BMP280_CHIP_ID || chip_id == BME280_CHIP_ID) {
ret = bmp280_read_calib(data, &data->calib.bmp280, chip_id);
if (ret < 0) {
dev_err(data->dev,
"failed to read calibration coefficients\n");
- goto out_disable_regulators;
+ return ret;
}
}
@@ -1112,7 +1132,7 @@ int bmp280_common_probe(struct device *dev,
if (irq > 0 || (chip_id == BMP180_CHIP_ID)) {
ret = bmp085_fetch_eoc_irq(dev, name, irq, data);
if (ret)
- goto out_disable_regulators;
+ return ret;
}
/* Enable runtime PM */
@@ -1127,36 +1147,14 @@ int bmp280_common_probe(struct device *dev,
pm_runtime_use_autosuspend(dev);
pm_runtime_put(dev);
- ret = iio_device_register(indio_dev);
+ ret = devm_add_action_or_reset(dev, bmp280_pm_disable, dev);
if (ret)
- goto out_runtime_pm_disable;
-
- return 0;
+ return ret;
-out_runtime_pm_disable:
- pm_runtime_get_sync(data->dev);
- pm_runtime_put_noidle(data->dev);
- pm_runtime_disable(data->dev);
-out_disable_regulators:
- regulator_bulk_disable(BMP280_NUM_SUPPLIES, data->supplies);
- return ret;
+ return devm_iio_device_register(dev, indio_dev);
}
EXPORT_SYMBOL(bmp280_common_probe);
-int bmp280_common_remove(struct device *dev)
-{
- struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct bmp280_data *data = iio_priv(indio_dev);
-
- iio_device_unregister(indio_dev);
- pm_runtime_get_sync(data->dev);
- pm_runtime_put_noidle(data->dev);
- pm_runtime_disable(data->dev);
- regulator_bulk_disable(BMP280_NUM_SUPPLIES, data->supplies);
- return 0;
-}
-EXPORT_SYMBOL(bmp280_common_remove);
-
#ifdef CONFIG_PM
static int bmp280_runtime_suspend(struct device *dev)
{
diff --git a/drivers/iio/pressure/bmp280-i2c.c b/drivers/iio/pressure/bmp280-i2c.c
index acd9a3784fb4..3109c8e2cc11 100644
--- a/drivers/iio/pressure/bmp280-i2c.c
+++ b/drivers/iio/pressure/bmp280-i2c.c
@@ -38,11 +38,6 @@ static int bmp280_i2c_probe(struct i2c_client *client,
client->irq);
}
-static int bmp280_i2c_remove(struct i2c_client *client)
-{
- return bmp280_common_remove(&client->dev);
-}
-
static const struct acpi_device_id bmp280_acpi_i2c_match[] = {
{"BMP0280", BMP280_CHIP_ID },
{"BMP0180", BMP180_CHIP_ID },
@@ -82,7 +77,6 @@ static struct i2c_driver bmp280_i2c_driver = {
.pm = &bmp280_dev_pm_ops,
},
.probe = bmp280_i2c_probe,
- .remove = bmp280_i2c_remove,
.id_table = bmp280_i2c_id,
};
module_i2c_driver(bmp280_i2c_driver);
diff --git a/drivers/iio/pressure/bmp280-spi.c b/drivers/iio/pressure/bmp280-spi.c
index 9d57b7a3b134..625b86878ad8 100644
--- a/drivers/iio/pressure/bmp280-spi.c
+++ b/drivers/iio/pressure/bmp280-spi.c
@@ -86,11 +86,6 @@ static int bmp280_spi_probe(struct spi_device *spi)
spi->irq);
}
-static int bmp280_spi_remove(struct spi_device *spi)
-{
- return bmp280_common_remove(&spi->dev);
-}
-
static const struct of_device_id bmp280_of_spi_match[] = {
{ .compatible = "bosch,bmp085", },
{ .compatible = "bosch,bmp180", },
@@ -118,7 +113,6 @@ static struct spi_driver bmp280_spi_driver = {
},
.id_table = bmp280_spi_id,
.probe = bmp280_spi_probe,
- .remove = bmp280_spi_remove,
};
module_spi_driver(bmp280_spi_driver);
diff --git a/drivers/iio/pressure/bmp280.h b/drivers/iio/pressure/bmp280.h
index eda50ef65706..57ba0e85db91 100644
--- a/drivers/iio/pressure/bmp280.h
+++ b/drivers/iio/pressure/bmp280.h
@@ -112,7 +112,6 @@ int bmp280_common_probe(struct device *dev,
unsigned int chip,
const char *name,
int irq);
-int bmp280_common_remove(struct device *dev);
/* PM ops */
extern const struct dev_pm_ops bmp280_dev_pm_ops;
--
2.23.0
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