[alsa-devel] [PATCH] ASoC: codecs-ac97: make selectable in config

[Lars-Peter Clausen]

On 05/14/2015 07:53 PM, Mark Brown wrote:
> On Wed, May 13, 2015 at 10:57:24PM +0200, Maciej S. Szmigiero wrote:
>> W dniu 12.05.2015 19:58, Mark Brown pisze:
>>> On Sun, May 10, 2015 at 12:12:04AM +0200, Maciej S. Szmigiero wrote:
>
>>>> @@ -16,7 +16,7 @@ config SND_SOC_ALL_CODECS
>>>>   	select SND_SOC_88PM860X if MFD_88PM860X
>>>>   	select SND_SOC_L3
>>>>   	select SND_SOC_AB8500_CODEC if ABX500_CORE
>>>> -	select SND_SOC_AC97_CODEC if SND_SOC_AC97_BUS
>>>> +	select SND_SOC_AC97_CODEC
>>>>   	select SND_SOC_AD1836 if SPI_MASTER
>>>>   	select SND_SOC_AD193X_SPI if SPI_MASTER
>>>>   	select SND_SOC_AD193X_I2C if I2C
>
>>> No, you're missing the point of what _ALL_CODECS does - it builds
>>> everything possible.  This will break the build for systems without
>>> AC'97 support.
>
>> How?
>> In the second hunk of the patch I've made SND_SOC_AC97_CODEC select
>> SND_SOC_AC97_BUS.
>
> select doesn't respect dependencies, it'll just force on the selected
> symbol.

The patch works fine, neither SND_SOC_AC97_BUS nor the symbols selected by 
SND_SOC_AC97_BUS have any dependencies.

Although one might argue that only AC97 host driver should select 
SND_SOC_AC97_BUS and the CODEC drivers should depend on it.

- Lars