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Message-ID: <20250813225840.576305-4-afd@ti.com>
Date: Wed, 13 Aug 2025 17:58:38 -0500
From: Andrew Davis <afd@...com>
To: Jonathan Cameron <jic23@...nel.org>,
David Lechner
<dlechner@...libre.com>,
Nuno Sá <nuno.sa@...log.com>,
Andy Shevchenko <andy@...nel.org>
CC: <linux-iio@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
Andrew Davis
<afd@...com>
Subject: [PATCH 4/6] iio: health: afe4404: Do not store dev pointer in device struct
The device *dev is only used in probe(), so no need to store it
in the device local data struct. In all the places in probe()
we did use that, just use a new local variable for the same.
Signed-off-by: Andrew Davis <afd@...com>
---
drivers/iio/health/afe4404.c | 46 +++++++++++++++++-------------------
1 file changed, 22 insertions(+), 24 deletions(-)
diff --git a/drivers/iio/health/afe4404.c b/drivers/iio/health/afe4404.c
index b2727effecaae..29e030943f599 100644
--- a/drivers/iio/health/afe4404.c
+++ b/drivers/iio/health/afe4404.c
@@ -77,7 +77,6 @@ static const struct reg_field afe4404_reg_fields[] = {
/**
* struct afe4404_data - AFE4404 device instance data
- * @dev: Device structure
* @regmap: Register map of the device
* @fields: Register fields of the device
* @regulator: Pointer to the regulator for the IC
@@ -86,7 +85,6 @@ static const struct reg_field afe4404_reg_fields[] = {
* @buffer: Used to construct a scan to push to the iio buffer.
*/
struct afe4404_data {
- struct device *dev;
struct regmap *regmap;
struct regmap_field *fields[F_MAX_FIELDS];
struct regulator *regulator;
@@ -468,62 +466,62 @@ static DEFINE_SIMPLE_DEV_PM_OPS(afe4404_pm_ops, afe4404_suspend,
static int afe4404_probe(struct i2c_client *client)
{
+ struct device *dev = &client->dev;
struct iio_dev *indio_dev;
struct afe4404_data *afe;
int i, ret;
- indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*afe));
+ indio_dev = devm_iio_device_alloc(dev, sizeof(*afe));
if (!indio_dev)
return -ENOMEM;
afe = iio_priv(indio_dev);
i2c_set_clientdata(client, indio_dev);
- afe->dev = &client->dev;
afe->irq = client->irq;
afe->regmap = devm_regmap_init_i2c(client, &afe4404_regmap_config);
if (IS_ERR(afe->regmap)) {
- dev_err(afe->dev, "Unable to allocate register map\n");
+ dev_err(dev, "Unable to allocate register map\n");
return PTR_ERR(afe->regmap);
}
for (i = 0; i < F_MAX_FIELDS; i++) {
- afe->fields[i] = devm_regmap_field_alloc(afe->dev, afe->regmap,
+ afe->fields[i] = devm_regmap_field_alloc(dev, afe->regmap,
afe4404_reg_fields[i]);
if (IS_ERR(afe->fields[i])) {
- dev_err(afe->dev, "Unable to allocate regmap fields\n");
+ dev_err(dev, "Unable to allocate regmap fields\n");
return PTR_ERR(afe->fields[i]);
}
}
- afe->regulator = devm_regulator_get(afe->dev, "tx_sup");
+ afe->regulator = devm_regulator_get(dev, "tx_sup");
if (IS_ERR(afe->regulator))
- return dev_err_probe(afe->dev, PTR_ERR(afe->regulator),
+ return dev_err_probe(dev, PTR_ERR(afe->regulator),
"Unable to get regulator\n");
ret = regulator_enable(afe->regulator);
if (ret) {
- dev_err(afe->dev, "Unable to enable regulator\n");
+ dev_err(dev, "Unable to enable regulator\n");
return ret;
}
- ret = devm_add_action_or_reset(afe->dev, afe4404_regulator_disable, afe->regulator);
+ ret = devm_add_action_or_reset(dev, afe4404_regulator_disable, afe->regulator);
if (ret) {
- dev_err(afe->dev, "Unable to enable regulator\n");
+ dev_err(dev, "Unable to enable regulator\n");
return ret;
}
ret = regmap_write(afe->regmap, AFE440X_CONTROL0,
AFE440X_CONTROL0_SW_RESET);
if (ret) {
- dev_err(afe->dev, "Unable to reset device\n");
+ dev_err(dev, "Unable to reset device\n");
return ret;
}
ret = regmap_multi_reg_write(afe->regmap, afe4404_reg_sequences,
ARRAY_SIZE(afe4404_reg_sequences));
if (ret) {
- dev_err(afe->dev, "Unable to set register defaults\n");
+ dev_err(dev, "Unable to set register defaults\n");
return ret;
}
@@ -534,45 +532,45 @@ static int afe4404_probe(struct i2c_client *client)
indio_dev->info = &afe4404_iio_info;
if (afe->irq > 0) {
- afe->trig = devm_iio_trigger_alloc(afe->dev,
+ afe->trig = devm_iio_trigger_alloc(dev,
"%s-dev%d",
indio_dev->name,
iio_device_id(indio_dev));
if (!afe->trig) {
- dev_err(afe->dev, "Unable to allocate IIO trigger\n");
+ dev_err(dev, "Unable to allocate IIO trigger\n");
return -ENOMEM;
}
iio_trigger_set_drvdata(afe->trig, indio_dev);
- ret = devm_iio_trigger_register(afe->dev, afe->trig);
+ ret = devm_iio_trigger_register(dev, afe->trig);
if (ret) {
- dev_err(afe->dev, "Unable to register IIO trigger\n");
+ dev_err(dev, "Unable to register IIO trigger\n");
return ret;
}
- ret = devm_request_threaded_irq(afe->dev, afe->irq,
+ ret = devm_request_threaded_irq(dev, afe->irq,
iio_trigger_generic_data_rdy_poll,
NULL, IRQF_ONESHOT,
AFE4404_DRIVER_NAME,
afe->trig);
if (ret) {
- dev_err(afe->dev, "Unable to request IRQ\n");
+ dev_err(dev, "Unable to request IRQ\n");
return ret;
}
}
- ret = devm_iio_triggered_buffer_setup(afe->dev, indio_dev,
+ ret = devm_iio_triggered_buffer_setup(dev, indio_dev,
&iio_pollfunc_store_time,
afe4404_trigger_handler, NULL);
if (ret) {
- dev_err(afe->dev, "Unable to setup buffer\n");
+ dev_err(dev, "Unable to setup buffer\n");
return ret;
}
- ret = devm_iio_device_register(afe->dev, indio_dev);
+ ret = devm_iio_device_register(dev, indio_dev);
if (ret) {
- dev_err(afe->dev, "Unable to register IIO device\n");
+ dev_err(dev, "Unable to register IIO device\n");
return ret;
}
--
2.39.2
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