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platform/x86: fujitsu-laptop: register backlight device in a separate function 

Move code responsible for backlight device registration to a separate
function in order to simplify error handling and decrease indentation.
Simplify initialization of struct backlight_properties.

Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-and-tested-by: Jonathan Woithe <jwoithe@just42.net>
This commit is contained in:
Michał Kępień 2017-03-10 11:50:33 +01:00 committed by Darren Hart
parent d2aa3ae86d
commit b8d69c16a0
1 changed files with 22 additions and 16 deletions
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38
drivers/platform/x86/fujitsu-laptop.c
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@ -685,6 +685,25 @@ static const struct dmi_system_id fujitsu_dmi_table[] __initconst = {
/* ACPI device for LCD brightness control */
static int fujitsu_backlight_register(void)
{
struct backlight_properties props = {
.brightness = fujitsu_bl->brightness_level,
.max_brightness = fujitsu_bl->max_brightness - 1,
.type = BACKLIGHT_PLATFORM
};
struct backlight_device *bd;
bd = backlight_device_register("fujitsu-laptop", NULL, NULL,
&fujitsu_bl_ops, &props);
if (IS_ERR(bd))
return PTR_ERR(bd);
fujitsu_bl->bl_device = bd;
return 0;
}
static int acpi_fujitsu_bl_add(struct acpi_device *device)
{
int state = 0;
@ -1184,7 +1203,7 @@ MODULE_DEVICE_TABLE(acpi, fujitsu_ids);
static int __init fujitsu_init(void)
{
int ret, max_brightness;
int ret;
if (acpi_disabled)
return -ENODEV;
@ -1224,22 +1243,9 @@ static int __init fujitsu_init(void)
/* Register backlight stuff */
if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
struct backlight_properties props;
memset(&props, 0, sizeof(struct backlight_properties));
max_brightness = fujitsu_bl->max_brightness;
props.type = BACKLIGHT_PLATFORM;
props.max_brightness = max_brightness - 1;
fujitsu_bl->bl_device = backlight_device_register("fujitsu-laptop",
NULL, NULL,
&fujitsu_bl_ops,
&props);
if (IS_ERR(fujitsu_bl->bl_device)) {
ret = PTR_ERR(fujitsu_bl->bl_device);
fujitsu_bl->bl_device = NULL;
ret = fujitsu_backlight_register();
if (ret)
goto fail_sysfs_group;
}
fujitsu_bl->bl_device->props.brightness = fujitsu_bl->brightness_level;
}
ret = platform_driver_register(&fujitsu_pf_driver);