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author | Michał Kępień <kernel@kempniu.pl> | 2017-03-10 11:50:33 +0100 |
---|---|---|
committer | Darren Hart <dvhart@infradead.org> | 2017-03-14 22:57:16 -0700 |
commit | b8d69c16a0bdc2cae1ad709f0a9e6a2484c457a9 (patch) | |
tree | 8c286f1b8fac7eb05c6a400b7285f24786c6aa77 | |
parent | platform/x86: fujitsu-laptop: simplify brightness key event generation logic (diff) | |
download | linux-dev-b8d69c16a0bdc2cae1ad709f0a9e6a2484c457a9.tar.xz linux-dev-b8d69c16a0bdc2cae1ad709f0a9e6a2484c457a9.zip |
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>
-rw-r--r-- | drivers/platform/x86/fujitsu-laptop.c | 38 |
1 files changed, 22 insertions, 16 deletions
diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c index 4a5e7b60a672..897438f81f09 100644 --- a/drivers/platform/x86/fujitsu-laptop.c +++ b/drivers/platform/x86/fujitsu-laptop.c @@ -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); |