Re: future of sounds/oss

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On May 11 2017 19:01, Takashi Sakamoto wrote:
But the set_fs() usage in OSS code is hard to get rid of, due to the
in-kernel ioctl calls, and I really don't want to touch such dusty
codes, either.  So I wanted to post the very same question, but you
were faster :)

But looking at the OSS code it's pretty grotty, and also appears
to be pretty much unmaintained except for global cleanups.  Is there
any chance we could look into getting rid of it over the next few
merge windows or are there people that rely on it?

I don't think there are any active users.  The only slight concern is
that there are a few ancient devices that are supported only by some
OSS drivers.  But these are over decades, and very unlikely alive.

That said, I'd love to drop that legacy stuff; or maybe as a
soft-landing, begin with disabling the build of sound/oss in Kconfig.

The latter can be done even for 4.12, if Linus doesn't mind.

I think we don't need to care of drivers implemented with Open Sound
System. In my understanding, stuffs in 'sound/core/oss/*' give Open
Sound System compatibility layer for Open Sound System applications. In
short, it gives a way for the applications to use drivers in ALSA by
Open Sound System interfaces. Even if this layer is missing, the
applications are still available with Open Sound System Proxy Daemon[3]
with FUSE/CURE assistances. I believe we can get rid of them without any
actual disadvantages.

Oops. I misunderstand to have discussion about stuffs in 'sound/core/oss/*', because the compatibility layer also includes abuses of set_fs() and I'm interested in it today...

For stuffs in 'sound/oss', we should certainly have care of points which Iwai-san mentioned. If we get rid of it, we can also apply diet to 'soundcore' module which gives 'sound' class but include some helper functions just for Open Sound System drivers.


Regards

Takashi Sakamoto
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