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Input: mcs-touchkey - convert to use devm_* api

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Use devm_* api to simplify code, this makes it unnecessary to explicitly
release resources.

Signed-off-by: Yangtao Li <frank.li@vivo.com>
Link: https://lore.kernel.org/r/20230714080611.81302-3-frank.li@vivo.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Yangtao Li 2023-07-20 15:41:20 -07:00 committed by Dmitry Torokhov
parent caddca33a0
commit e175eae16c
1 changed files with 29 additions and 34 deletions
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57
drivers/input/keyboard/mcs_touchkey.c
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@ -92,6 +92,13 @@ static irqreturn_t mcs_touchkey_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}
static void mcs_touchkey_poweroff(void *data)
{
struct mcs_touchkey_data *touchkey = data;
touchkey->poweron(false);
}
static int mcs_touchkey_probe(struct i2c_client *client)
{
const struct i2c_device_id *id = i2c_client_get_device_id(client);
@ -109,13 +116,16 @@ static int mcs_touchkey_probe(struct i2c_client *client)
return -EINVAL;
}
data = kzalloc(struct_size(data, keycodes, pdata->key_maxval + 1),
data = devm_kzalloc(&client->dev,
struct_size(data, keycodes, pdata->key_maxval + 1),
GFP_KERNEL);
input_dev = input_allocate_device();
if (!data || !input_dev) {
dev_err(&client->dev, "Failed to allocate memory\n");
error = -ENOMEM;
goto err_free_mem;
if (!data)
return -ENOMEM;
input_dev = devm_input_allocate_device(&client->dev);
if (!input_dev) {
dev_err(&client->dev, "Failed to allocate input device\n");
return -ENOMEM;
}
data->client = client;
@ -136,15 +146,13 @@ static int mcs_touchkey_probe(struct i2c_client *client)
fw_ver = i2c_smbus_read_byte_data(client, fw_reg);
if (fw_ver < 0) {
error = fw_ver;
dev_err(&client->dev, "i2c read error[%d]\n", error);
goto err_free_mem;
return fw_ver;
}
dev_info(&client->dev, "Firmware version: %d\n", fw_ver);
input_dev->name = "MELFAS MCS Touchkey";
input_dev->id.bustype = BUS_I2C;
input_dev->dev.parent = &client->dev;
input_dev->evbit[0] = BIT_MASK(EV_KEY);
if (!pdata->no_autorepeat)
input_dev->evbit[0] |= BIT_MASK(EV_REP);
@ -169,40 +177,28 @@ static int mcs_touchkey_probe(struct i2c_client *client)
if (pdata->poweron) {
data->poweron = pdata->poweron;
data->poweron(true);
error = devm_add_action_or_reset(&client->dev,
mcs_touchkey_poweroff, data);
if (error)
return error;
}
error = request_threaded_irq(client->irq, NULL, mcs_touchkey_interrupt,
error = devm_request_threaded_irq(&client->dev, client->irq,
NULL, mcs_touchkey_interrupt,
IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
client->dev.driver->name, data);
if (error) {
dev_err(&client->dev, "Failed to register interrupt\n");
goto err_free_mem;
return error;
}
error = input_register_device(input_dev);
if (error)
goto err_free_irq;
return error;
i2c_set_clientdata(client, data);
return 0;
err_free_irq:
free_irq(client->irq, data);
err_free_mem:
input_free_device(input_dev);
kfree(data);
return error;
}
static void mcs_touchkey_remove(struct i2c_client *client)
{
struct mcs_touchkey_data *data = i2c_get_clientdata(client);
free_irq(client->irq, data);
if (data->poweron)
data->poweron(false);
input_unregister_device(data->input_dev);
kfree(data);
}
static void mcs_touchkey_shutdown(struct i2c_client *client)
@ -259,7 +255,6 @@ static struct i2c_driver mcs_touchkey_driver = {
.pm = pm_sleep_ptr(&mcs_touchkey_pm_ops),
},
.probe = mcs_touchkey_probe,
.remove = mcs_touchkey_remove,
.shutdown = mcs_touchkey_shutdown,
.id_table = mcs_touchkey_id,
};