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platform/x86: fujitsu-laptop: refactor backlight input device setup

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Simplify error handling in acpi_fujitsu_bl_add() by moving code
responsible for setting up the input device to a separate function.

Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Reviewed-by: Jonathan Woithe <jwoithe@just42.net>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
This commit is contained in:
Michał Kępień 2017-03-20 10:32:17 +01:00 committed by Darren Hart (VMware)
parent 674b5d5836
commit 7d134e43a2
1 changed files with 38 additions and 26 deletions
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64
drivers/platform/x86/fujitsu-laptop.c
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@ -590,6 +590,41 @@ static const struct dmi_system_id fujitsu_dmi_table[] __initconst = {
/* ACPI device for LCD brightness control */
static int acpi_fujitsu_bl_input_setup(struct acpi_device *device)
{
struct fujitsu_bl *fujitsu_bl = acpi_driver_data(device);
struct input_dev *input;
int error;
fujitsu_bl->input = input = input_allocate_device();
if (!input)
return -ENOMEM;
snprintf(fujitsu_bl->phys, sizeof(fujitsu_bl->phys),
"%s/video/input0", acpi_device_hid(device));
input->name = acpi_device_name(device);
input->phys = fujitsu_bl->phys;
input->id.bustype = BUS_HOST;
input->id.product = 0x06;
input->dev.parent = &device->dev;
input->evbit[0] = BIT(EV_KEY);
set_bit(KEY_BRIGHTNESSUP, input->keybit);
set_bit(KEY_BRIGHTNESSDOWN, input->keybit);
set_bit(KEY_UNKNOWN, input->keybit);
error = input_register_device(input);
if (error)
goto err_free_input_dev;
return 0;
err_free_input_dev:
input_free_device(input);
return error;
}
static int fujitsu_backlight_register(void)
{
struct backlight_properties props = {
@ -612,7 +647,6 @@ static int fujitsu_backlight_register(void)
static int acpi_fujitsu_bl_add(struct acpi_device *device)
{
int state = 0;
struct input_dev *input;
int error;
if (!device)
@ -623,28 +657,9 @@ static int acpi_fujitsu_bl_add(struct acpi_device *device)
sprintf(acpi_device_class(device), "%s", ACPI_FUJITSU_CLASS);
device->driver_data = fujitsu_bl;
fujitsu_bl->input = input = input_allocate_device();
if (!input) {
error = -ENOMEM;
goto err_stop;
}
snprintf(fujitsu_bl->phys, sizeof(fujitsu_bl->phys),
"%s/video/input0", acpi_device_hid(device));
input->name = acpi_device_name(device);
input->phys = fujitsu_bl->phys;
input->id.bustype = BUS_HOST;
input->id.product = 0x06;
input->dev.parent = &device->dev;
input->evbit[0] = BIT(EV_KEY);
set_bit(KEY_BRIGHTNESSUP, input->keybit);
set_bit(KEY_BRIGHTNESSDOWN, input->keybit);
set_bit(KEY_UNKNOWN, input->keybit);
error = input_register_device(input);
error = acpi_fujitsu_bl_input_setup(device);
if (error)
goto err_free_input_dev;
goto err_stop;
error = acpi_bus_update_power(fujitsu_bl->acpi_handle, &state);
if (error) {
@ -695,10 +710,7 @@ static int acpi_fujitsu_bl_add(struct acpi_device *device)
return 0;
err_unregister_input_dev:
input_unregister_device(input);
input = NULL;
err_free_input_dev:
input_free_device(input);
input_unregister_device(fujitsu_bl->input);
err_stop:
return error;
}