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Subject[PATCH 1/8] platform/x86: fujitsu-laptop: move backlight input device setup to a separate function
Date
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>
---
drivers/platform/x86/fujitsu-laptop.c | 64 +++++++++++++++++++++--------------
1 file changed, 38 insertions(+), 26 deletions(-)

diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c
index f3ccef3d5a1e..2b0dcf989e2a 100644
--- a/drivers/platform/x86/fujitsu-laptop.c
+++ b/drivers/platform/x86/fujitsu-laptop.c
@@ -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;
}
--
2.12.0
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