[PATCH v3 27/27] Input: bu21029_ts - Use local 'client->dev' variable in probe()

Krzysztof Kozlowski
2020-08-27T19:00:20Z

'dev' is shorter and simpler than '&client->dev' and in few cases it
allows to skip line wrapping. Probe function uses '&client->dev' a lot,
so this improves readability slightly.

Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

---

Changes since v2:
1. New patch
---
drivers/input/touchscreen/bu21029_ts.c | 37 +++++++++++---------------
1 file changed, 16 insertions(+), 21 deletions(-)

diff --git a/drivers/input/touchscreen/bu21029_ts.c b/drivers/input/touchscreen/bu21029_ts.c
index 96c178b606dc..78e256254764 100644
--- a/drivers/input/touchscreen/bu21029_ts.c
+++ b/drivers/input/touchscreen/bu21029_ts.c
@@ -334,6 +334,7 @@ static void bu21029_stop_chip(struct input_dev *dev)
static int bu21029_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
+ struct device *dev = &client->dev;
struct bu21029_ts_data *bu21029;
struct input_dev *in_dev;
int error;
@@ -342,37 +343,33 @@ static int bu21029_probe(struct i2c_client *client,
I2C_FUNC_SMBUS_WRITE_BYTE |
I2C_FUNC_SMBUS_WRITE_BYTE_DATA |
I2C_FUNC_SMBUS_READ_I2C_BLOCK)) {
- dev_err(&client->dev,
- "i2c functionality support is not sufficient\n");
+ dev_err(dev, "i2c functionality support is not sufficient\n");
return -EIO;
}

- bu21029 = devm_kzalloc(&client->dev, sizeof(*bu21029), GFP_KERNEL);
+ bu21029 = devm_kzalloc(dev, sizeof(*bu21029), GFP_KERNEL);
if (!bu21029)
return -ENOMEM;

- error = device_property_read_u32(&client->dev, "rohm,x-plate-ohms",
- &bu21029->x_plate_ohms);
+ error = device_property_read_u32(dev, "rohm,x-plate-ohms", &bu21029->x_plate_ohms);
if (error) {
- dev_err(&client->dev,
- "invalid 'x-plate-ohms' supplied: %d\n", error);
+ dev_err(dev, "invalid 'x-plate-ohms' supplied: %d\n", error);
return error;
}

- bu21029->vdd = devm_regulator_get(&client->dev, "vdd");
+ bu21029->vdd = devm_regulator_get(dev, "vdd");
if (IS_ERR(bu21029->vdd))
- return dev_err_probe(&client->dev, PTR_ERR(bu21029->vdd),
+ return dev_err_probe(dev, PTR_ERR(bu21029->vdd),
"failed to acquire 'vdd' supply\n");

- bu21029->reset_gpios = devm_gpiod_get_optional(&client->dev,
- "reset", GPIOD_OUT_HIGH);
+ bu21029->reset_gpios = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(bu21029->reset_gpios))
- return dev_err_probe(&client->dev, PTR_ERR(bu21029->reset_gpios),
+ return dev_err_probe(dev, PTR_ERR(bu21029->reset_gpios),
"failed to acquire 'reset' gpio\n");

- in_dev = devm_input_allocate_device(&client->dev);
+ in_dev = devm_input_allocate_device(dev);
if (!in_dev) {
- dev_err(&client->dev, "unable to allocate input device\n");
+ dev_err(dev, "unable to allocate input device\n");
return -ENOMEM;
}

@@ -394,19 +391,17 @@ static int bu21029_probe(struct i2c_client *client,
input_set_drvdata(in_dev, bu21029);

irq_set_status_flags(client->irq, IRQ_NOAUTOEN);
- error = devm_request_threaded_irq(&client->dev, client->irq,
- NULL, bu21029_touch_soft_irq,
- IRQF_ONESHOT, DRIVER_NAME, bu21029);
+ error = devm_request_threaded_irq(dev, client->irq, NULL,
+ bu21029_touch_soft_irq, IRQF_ONESHOT,
+ DRIVER_NAME, bu21029);
if (error) {
- dev_err(&client->dev,
- "unable to request touch irq: %d\n", error);
+ dev_err(dev, "unable to request touch irq: %d\n", error);
return error;
}

error = input_register_device(in_dev);
if (error) {
- dev_err(&client->dev,
- "unable to register input device: %d\n", error);
+ dev_err(dev, "unable to register input device: %d\n", error);
return error;
}

--
2.17.1