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Input: stmpe-keyboard - switch to using managed resources

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This patch frees stmpe-keyboard driver from burden of freeing resources :)
devm_* derivatives of multiple routines are used while allocating resources,
which would be freed automatically by kernel.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Viresh Kumar 2012-11-10 00:11:10 -08:00 committed by Dmitry Torokhov
parent 6102752eb3
commit aaa4f2a7f6
1 changed files with 28 additions and 44 deletions
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72
drivers/input/keyboard/stmpe-keypad.c
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@ -260,10 +260,10 @@ static int __devinit stmpe_keypad_chip_init(struct stmpe_keypad *keypad)
static int __devinit stmpe_keypad_probe(struct platform_device *pdev)
{
struct stmpe *stmpe = dev_get_drvdata(pdev->dev.parent);
struct stmpe_keypad_platform_data *plat;
const struct stmpe_keypad_platform_data *plat;
struct stmpe_keypad *keypad;
struct input_dev *input;
int ret;
int error;
int irq;
int i;
@ -275,26 +275,25 @@ static int __devinit stmpe_keypad_probe(struct platform_device *pdev)
if (irq < 0)
return irq;
keypad = kzalloc(sizeof(struct stmpe_keypad), GFP_KERNEL);
keypad = devm_kzalloc(&pdev->dev, sizeof(struct stmpe_keypad),
GFP_KERNEL);
if (!keypad)
return -ENOMEM;
input = input_allocate_device();
if (!input) {
ret = -ENOMEM;
goto out_freekeypad;
}
input = devm_input_allocate_device(&pdev->dev);
if (!input)
return -ENOMEM;
input->name = "STMPE keypad";
input->id.bustype = BUS_I2C;
input->dev.parent = &pdev->dev;
ret = matrix_keypad_build_keymap(plat->keymap_data, NULL,
STMPE_KEYPAD_MAX_ROWS,
STMPE_KEYPAD_MAX_COLS,
keypad->keymap, input);
if (ret)
goto out_freeinput;
error = matrix_keypad_build_keymap(plat->keymap_data, NULL,
STMPE_KEYPAD_MAX_ROWS,
STMPE_KEYPAD_MAX_COLS,
keypad->keymap, input);
if (error)
return error;
input_set_capability(input, EV_MSC, MSC_SCAN);
if (!plat->no_autorepeat)
@ -312,50 +311,35 @@ static int __devinit stmpe_keypad_probe(struct platform_device *pdev)
keypad->input = input;
keypad->variant = &stmpe_keypad_variants[stmpe->partnum];
ret = stmpe_keypad_chip_init(keypad);
if (ret < 0)
goto out_freeinput;
error = stmpe_keypad_chip_init(keypad);
if (error < 0)
return error;
ret = input_register_device(input);
if (ret) {
dev_err(&pdev->dev,
"unable to register input device: %d\n", ret);
goto out_freeinput;
error = devm_request_threaded_irq(&pdev->dev, irq,
NULL, stmpe_keypad_irq,
IRQF_ONESHOT, "stmpe-keypad", keypad);
if (error) {
dev_err(&pdev->dev, "unable to get irq: %d\n", error);
return error;
}
ret = request_threaded_irq(irq, NULL, stmpe_keypad_irq, IRQF_ONESHOT,
"stmpe-keypad", keypad);
if (ret) {
dev_err(&pdev->dev, "unable to get irq: %d\n", ret);
goto out_unregisterinput;
error = input_register_device(input);
if (error) {
dev_err(&pdev->dev,
"unable to register input device: %d\n", error);
return error;
}
platform_set_drvdata(pdev, keypad);
return 0;
out_unregisterinput:
input_unregister_device(input);
input = NULL;
out_freeinput:
input_free_device(input);
out_freekeypad:
kfree(keypad);
return ret;
}
static int __devexit stmpe_keypad_remove(struct platform_device *pdev)
{
struct stmpe_keypad *keypad = platform_get_drvdata(pdev);
struct stmpe *stmpe = keypad->stmpe;
int irq = platform_get_irq(pdev, 0);
stmpe_disable(stmpe, STMPE_BLOCK_KEYPAD);
free_irq(irq, keypad);
input_unregister_device(keypad->input);
platform_set_drvdata(pdev, NULL);
kfree(keypad);
stmpe_disable(keypad->stmpe, STMPE_BLOCK_KEYPAD);
return 0;
}