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Commit b83643eb authored by Dmitry Torokhov's avatar Dmitry Torokhov
Browse files

Input: matrix-keypad - undo GPIO setup if input_register_device fails 



Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent 01111fcd

drivers/input/keyboard/matrix_keypad.c

+30 −23
Original line number Diff line number Diff line
@@ -299,11 +299,11 @@ static int matrix_keypad_resume(struct device *dev) 
static SIMPLE_DEV_PM_OPS(matrix_keypad_pm_ops,

			 matrix_keypad_suspend, matrix_keypad_resume);



static int __devinit init_matrix_gpio(struct platform_device *pdev,

static int __devinit matrix_keypad_init_gpio(struct platform_device *pdev,

					     struct matrix_keypad *keypad)

{

	const struct matrix_keypad_platform_data *pdata = keypad->pdata;

	int i, err = -EINVAL;

	int i, err;



	/* initialized strobe lines as outputs, activated */

	for (i = 0; i < pdata->num_col_gpios; i++) {
@@ -349,8 +349,7 @@ static int __devinit init_matrix_gpio(struct platform_device *pdev, 
					"matrix-keypad", keypad);

			if (err) {

				dev_err(&pdev->dev,

					"Unable to acquire interrupt "

					"for GPIO line %i\n",

					"Unable to acquire interrupt for GPIO line %i\n",

					pdata->row_gpios[i]);

				goto err_free_irqs;

			}
@@ -376,6 +375,25 @@ err_free_cols: 
	return err;

}



static void matrix_keypad_free_gpio(struct matrix_keypad *keypad)

{

	const struct matrix_keypad_platform_data *pdata = keypad->pdata;

	int i;



	if (pdata->clustered_irq > 0) {

		free_irq(pdata->clustered_irq, keypad);

	} else {

		for (i = 0; i < pdata->num_row_gpios; i++)

			free_irq(gpio_to_irq(pdata->row_gpios[i]), keypad);

	}



	for (i = 0; i < pdata->num_row_gpios; i++)

		gpio_free(pdata->row_gpios[i]);



	for (i = 0; i < pdata->num_col_gpios; i++)

		gpio_free(pdata->col_gpios[i]);

}



static int __devinit matrix_keypad_probe(struct platform_device *pdev)

{

	const struct matrix_keypad_platform_data *pdata;
@@ -435,19 +453,21 @@ static int __devinit matrix_keypad_probe(struct platform_device *pdev) 
	input_set_capability(input_dev, EV_MSC, MSC_SCAN);

	input_set_drvdata(input_dev, keypad);



	err = init_matrix_gpio(pdev, keypad);

	err = matrix_keypad_init_gpio(pdev, keypad);

	if (err)

		goto err_free_mem;



	err = input_register_device(keypad->input_dev);

	if (err)

		goto err_free_mem;

		goto err_free_gpio;



	device_init_wakeup(&pdev->dev, pdata->wakeup);

	platform_set_drvdata(pdev, keypad);



	return 0;



err_free_gpio:

	matrix_keypad_free_gpio(keypad);

err_free_mem:

	input_free_device(input_dev);

	kfree(keypad);
@@ -457,28 +477,15 @@ err_free_mem: 
static int __devexit matrix_keypad_remove(struct platform_device *pdev)

{

	struct matrix_keypad *keypad = platform_get_drvdata(pdev);

	const struct matrix_keypad_platform_data *pdata = keypad->pdata;

	int i;



	device_init_wakeup(&pdev->dev, 0);



	if (pdata->clustered_irq > 0) {

		free_irq(pdata->clustered_irq, keypad);

	} else {

		for (i = 0; i < pdata->num_row_gpios; i++)

			free_irq(gpio_to_irq(pdata->row_gpios[i]), keypad);

	}



	for (i = 0; i < pdata->num_row_gpios; i++)

		gpio_free(pdata->row_gpios[i]);



	for (i = 0; i < pdata->num_col_gpios; i++)

		gpio_free(pdata->col_gpios[i]);



	matrix_keypad_free_gpio(keypad);

	input_unregister_device(keypad->input_dev);

	platform_set_drvdata(pdev, NULL);

	kfree(keypad);



	platform_set_drvdata(pdev, NULL);



	return 0;

}