From 997502f89346bb9b7002dc4f4003636245346e8f Mon Sep 17 00:00:00 2001 From: Himangi Saraogi Date: Sat, 19 Jul 2014 16:16:02 -0700 Subject: [PATCH] Input: max7359 - introduce the use of managed interfaces This patch introduces the use of managed interfaces like devm_kzalloc, devm_input_allocate_device, devm_request_threaded_irq etc. and does away with the calls to free the allocated memory. The remove function is no longer required and is completely done away with. Also, the labels in the probe function are removed. Signed-off-by: Himangi Saraogi Acked-by: Julia Lawall Signed-off-by: Dmitry Torokhov --- drivers/input/keyboard/max7359_keypad.c | 45 ++++++++++++--------------------- 1 file changed, 16 insertions(+), 29 deletions(-) diff --git a/drivers/input/keyboard/max7359_keypad.c b/drivers/input/keyboard/max7359_keypad.c index 430b545..faa6da5 100644 --- a/drivers/input/keyboard/max7359_keypad.c +++ b/drivers/input/keyboard/max7359_keypad.c @@ -203,12 +203,17 @@ static int max7359_probe(struct i2c_client *client, dev_dbg(&client->dev, "keys FIFO is 0x%02x\n", ret); - keypad = kzalloc(sizeof(struct max7359_keypad), GFP_KERNEL); - input_dev = input_allocate_device(); - if (!keypad || !input_dev) { + keypad = devm_kzalloc(&client->dev, sizeof(struct max7359_keypad), + GFP_KERNEL); + if (!keypad) { dev_err(&client->dev, "failed to allocate memory\n"); - error = -ENOMEM; - goto failed_free_mem; + 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; } keypad->client = client; @@ -230,19 +235,20 @@ static int max7359_probe(struct i2c_client *client, max7359_build_keycode(keypad, keymap_data); - error = request_threaded_irq(client->irq, NULL, max7359_interrupt, - IRQF_TRIGGER_LOW | IRQF_ONESHOT, - client->name, keypad); + error = devm_request_threaded_irq(&client->dev, client->irq, NULL, + max7359_interrupt, + IRQF_TRIGGER_LOW | IRQF_ONESHOT, + client->name, keypad); if (error) { dev_err(&client->dev, "failed to register interrupt\n"); - goto failed_free_mem; + return error; } /* Register the input device */ error = input_register_device(input_dev); if (error) { dev_err(&client->dev, "failed to register input device\n"); - goto failed_free_irq; + return error; } /* Initialize MAX7359 */ @@ -252,24 +258,6 @@ static int max7359_probe(struct i2c_client *client, device_init_wakeup(&client->dev, 1); return 0; - -failed_free_irq: - free_irq(client->irq, keypad); -failed_free_mem: - input_free_device(input_dev); - kfree(keypad); - return error; -} - -static int max7359_remove(struct i2c_client *client) -{ - struct max7359_keypad *keypad = i2c_get_clientdata(client); - - free_irq(client->irq, keypad); - input_unregister_device(keypad->input_dev); - kfree(keypad); - - return 0; } #ifdef CONFIG_PM_SLEEP @@ -313,7 +301,6 @@ static struct i2c_driver max7359_i2c_driver = { .pm = &max7359_pm, }, .probe = max7359_probe, - .remove = max7359_remove, .id_table = max7359_ids, }; -- 2.7.4