Re: [PATCH v2 1/2] video: lcd: Remove useless BACKLIGHT_LCD_SUPPORT kernel symbol

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Hello.

Looks like you're right.
Can you create a patch to fix this?

Thanks.


>Среда, 15 мая 2019, 11:57 +03:00 от Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>:
>
>Hi Alexander,
>
>On Thu, Jan 17, 2019 at 2:39 PM Alexander Shiyan < shc_work@xxxxxxx > wrote:
>> We have two *_CLASS_DEVICE kernel config options (LCD_CLASS_DEVICE
>> and BACKLIGHT_LCD_DEVICE) that do the same job.
>> The patch removes useless BACKLIGHT_LCD_SUPPORT option
>> and converts LCD_CLASS_DEVICE into a menu.
>>
>> Signed-off-by: Alexander Shiyan < shc_work@xxxxxxx >
>This is now commit 8c5dc8d9f19c7992 ("video: backlight: Remove useless
>BACKLIGHT_LCD_SUPPORT kernel symbol").
>
>> --- a/drivers/video/backlight/Kconfig
>> +++ b/drivers/video/backlight/Kconfig
>> @@ -2,13 +2,7 @@
>>  # Backlight & LCD drivers configuration
>>  #
>>
>> -menuconfig BACKLIGHT_LCD_SUPPORT
>> -       bool "Backlight & LCD device support"
>> -       help
>> -         Enable this to be able to choose the drivers for controlling the
>> -         backlight and the LCD panel on some platforms, for example on PDAs.
>> -
>> -if BACKLIGHT_LCD_SUPPORT
>> +menu "Backlight & LCD device support"
>>
>>  #
>>  # LCD
>
>Below, we have:
>
>    config LCD_CLASS_DEVICE
>            tristate "Lowlevel LCD controls"
>            default m
>            help
>              This framework adds support for low-level control of LCD.
>              Some framebuffer devices connect to platform-specific LCD modules
>              in order to have a platform-specific way to control the flat panel
>              (contrast and applying power to the LCD (not to the backlight!)).
>
>and:
>
>    config BACKLIGHT_CLASS_DEVICE
>            tristate "Lowlevel Backlight controls"
>            default m
>            help
>              This framework adds support for low-level control of the LCD
>              backlight. This includes support for brightness and power.
>
>Hence running "make oldconfig" on a .config where
>CONFIG_BACKLIGHT_LCD_SUPPORT was not set leads two to new
>questions, where the answers default to "m".
>
>Perhaps the "default m" statements should be removed?

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