From 02300bd6517e19bd8651c9e72c788749a442ae22 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Lothar=20Wa=C3=9Fmann?= Date: Thu, 16 Jan 2014 16:26:55 -0800 Subject: [PATCH] Input: edt_ft5x06 - use devm_* functions where appropriate MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Simplify the error path and remove() function by using devm_* functions for requesting gpios and irq and allocating the input device. Signed-off-by: Lothar Waßmann Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/edt-ft5x06.c | 69 ++++++++++---------------- 1 file changed, 26 insertions(+), 43 deletions(-) diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c index af0d68b703b7..412a85ec9ba5 100644 --- a/drivers/input/touchscreen/edt-ft5x06.c +++ b/drivers/input/touchscreen/edt-ft5x06.c @@ -623,8 +623,9 @@ static int edt_ft5x06_ts_reset(struct i2c_client *client, if (gpio_is_valid(reset_pin)) { /* this pulls reset down, enabling the low active reset */ - error = gpio_request_one(reset_pin, GPIOF_OUT_INIT_LOW, - "edt-ft5x06 reset"); + error = devm_gpio_request_one(&client->dev, reset_pin, + GPIOF_OUT_INIT_LOW, + "edt-ft5x06 reset"); if (error) { dev_err(&client->dev, "Failed to request GPIO %d as reset pin, error %d\n", @@ -723,8 +724,8 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client, return error; if (gpio_is_valid(pdata->irq_pin)) { - error = gpio_request_one(pdata->irq_pin, - GPIOF_IN, "edt-ft5x06 irq"); + error = devm_gpio_request_one(&client->dev, pdata->irq_pin, + GPIOF_IN, "edt-ft5x06 irq"); if (error) { dev_err(&client->dev, "Failed to request GPIO %d, error %d\n", @@ -733,12 +734,16 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client, } } - tsdata = kzalloc(sizeof(*tsdata), GFP_KERNEL); - input = input_allocate_device(); - if (!tsdata || !input) { + tsdata = devm_kzalloc(&client->dev, sizeof(*tsdata), GFP_KERNEL); + if (!tsdata) { dev_err(&client->dev, "failed to allocate driver data.\n"); - error = -ENOMEM; - goto err_free_mem; + return -ENOMEM; + } + + input = devm_input_allocate_device(&client->dev); + if (!input) { + dev_err(&client->dev, "failed to allocate input device.\n"); + return -ENOMEM; } mutex_init(&tsdata->mutex); @@ -749,7 +754,7 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client, error = edt_ft5x06_ts_identify(client, tsdata->name, fw_version); if (error) { dev_err(&client->dev, "touchscreen probe failed\n"); - goto err_free_mem; + return error; } edt_ft5x06_ts_get_defaults(tsdata, pdata); @@ -776,27 +781,30 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client, error = input_mt_init_slots(input, MAX_SUPPORT_POINTS, 0); if (error) { dev_err(&client->dev, "Unable to init MT slots.\n"); - goto err_free_mem; + return error; } input_set_drvdata(input, tsdata); i2c_set_clientdata(client, tsdata); - error = request_threaded_irq(client->irq, NULL, edt_ft5x06_ts_isr, - IRQF_TRIGGER_FALLING | IRQF_ONESHOT, - client->name, tsdata); + error = devm_request_threaded_irq(&client->dev, client->irq, + NULL, edt_ft5x06_ts_isr, + IRQF_TRIGGER_FALLING | IRQF_ONESHOT, + client->name, tsdata); if (error) { dev_err(&client->dev, "Unable to request touchscreen IRQ.\n"); - goto err_free_mem; + return error; } error = sysfs_create_group(&client->dev.kobj, &edt_ft5x06_attr_group); if (error) - goto err_free_irq; + return error; error = input_register_device(input); - if (error) - goto err_remove_attrs; + if (error) { + sysfs_remove_group(&client->dev.kobj, &edt_ft5x06_attr_group); + return error; + } edt_ft5x06_ts_prepare_debugfs(tsdata, dev_driver_string(&client->dev)); device_init_wakeup(&client->dev, 1); @@ -806,40 +814,15 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client, pdata->irq_pin, pdata->reset_pin); return 0; - -err_remove_attrs: - sysfs_remove_group(&client->dev.kobj, &edt_ft5x06_attr_group); -err_free_irq: - free_irq(client->irq, tsdata); -err_free_mem: - input_free_device(input); - kfree(tsdata); - - if (gpio_is_valid(pdata->irq_pin)) - gpio_free(pdata->irq_pin); - - return error; } static int edt_ft5x06_ts_remove(struct i2c_client *client) { - const struct edt_ft5x06_platform_data *pdata = - dev_get_platdata(&client->dev); struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client); edt_ft5x06_ts_teardown_debugfs(tsdata); sysfs_remove_group(&client->dev.kobj, &edt_ft5x06_attr_group); - free_irq(client->irq, tsdata); - input_unregister_device(tsdata->input); - - if (gpio_is_valid(pdata->irq_pin)) - gpio_free(pdata->irq_pin); - if (gpio_is_valid(pdata->reset_pin)) - gpio_free(pdata->reset_pin); - - kfree(tsdata); - return 0; } -- 2.20.1