Re: [PATCH] ASoC: dwc: disallow building designware_pcm as a module

[Takashi Iwai <tiwai@suse.de>]

On Thu, 20 Apr 2017 21:46:46 +0200,
Mark Brown wrote:
> 
> On Wed, Apr 19, 2017 at 05:48:15PM +0100, Jose Abreu wrote:
> 
> > What do you think Mark? If you want to keep the PCM as a module
> > then we will need to abstract this more, by reducing the
> > dependencies.
> 
> I think forcing this to be built in to the kernel (which is what the
> commit message says the change is going to do) is an obviously bad
> idea.  Anything we add to the base kernel image needs to have a good
> reason to be there and it is hard to think what that reason might be for
> any audio driver, we need to be able to put this code into a module.

Well, I guess the original patch description caused a big confusion.
As far as I see, the intention of the patch is not about the module or
built-in kernel.  Instead it's rather to fold designware_pcm stuff
into the single designware_i2s driver.

The former is merely an extension of the latter driver, and the latter
invokes the former directly.  Thus there is little merit to keep them
separate.  I think the current code is even buggy, which allows to
leave CONFIG_SND_DESIGNWARE_I2S=y and CONFIG_SND_DESIGNWARE_PCM=m.

So, I think Lubomir's change is right.  But the patch subject and
description should be rephrased.

One thing I don't like is the rename of the file.  But in this
particular case, it's unavoidable unless we rename the module name.


BTW, we should drop the superfluous EXPORT_SYMBOL*(), too.


thanks,

Takashi