devfs OSS /dev/sound/* problem.

devfs OSS /dev/sound/* problem.

[mjander]

Hello,

I noticed the  following bug:

If i load more than one soundcard driver  (example ens1371 and
intel8x0),
with OSS support i  get a error message  from "devfs", that it 
"could not append
to /dev/sound", and the second  soundcard is  unable to create its
OSS /dev/sound/*
file nodes.

I noticed similar bugs in other OSS sound drivers before, but it
semes that very few people  use devfs. Yesterday i checked with
0.9rc8d (previous tests with 0.9rc7) and the problem is  still there.

I semes to me that the file node index passes to the corresponding
devfs_register() calls is static rather incremental or -1 for
automatic allocation as it should be.

Does this behave the same with any 2.5 kernel? I'm to much a
coward to try 2.5, last time i did, i lost very important data.

Kernel 2.4.20  + xfs
Dist: Debian SID
ALSA: 0.9rc8d
ARCH: i386


Best Regards

Manuel Jander.
.
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Re: devfs OSS /dev/sound/* problem.

[Jaroslav Kysela]

On Mon, 10 Mar 2003, mjander wrote:

> Hello,
> 
> I noticed the  following bug:
> 
> If i load more than one soundcard driver  (example ens1371 and
> intel8x0),
> with OSS support i  get a error message  from "devfs", that it 
> "could not append
> to /dev/sound", and the second  soundcard is  unable to create its
> OSS /dev/sound/*
> file nodes.
> 
> I noticed similar bugs in other OSS sound drivers before, but it
> semes that very few people  use devfs. Yesterday i checked with
> 0.9rc8d (previous tests with 0.9rc7) and the problem is  still there.
> 
> I semes to me that the file node index passes to the corresponding
> devfs_register() calls is static rather incremental or -1 for
> automatic allocation as it should be.
> 
> Does this behave the same with any 2.5 kernel? I'm to much a
> coward to try 2.5, last time i did, i lost very important data.

Try apply alsa-driver/utils/patches/soundcore.2.4.20.patch to your 
kernel.

						Jaroslav

-----
Jaroslav Kysela <perex@suse.cz>
Linux Kernel Sound Maintainer
ALSA Project, SuSE Labs



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Re: devfs OSS /dev/sound/* problem.

[Takashi Iwai]

At Mon, 10 Mar 2003 10:57:43 -0400,
mjander wrote:
> 
> Hello,
> 
> I noticed the  following bug:
> 
> If i load more than one soundcard driver  (example ens1371 and
> intel8x0),
> with OSS support i  get a error message  from "devfs", that it 
> "could not append
> to /dev/sound", and the second  soundcard is  unable to create its
> OSS /dev/sound/*
> file nodes.
> 
> I noticed similar bugs in other OSS sound drivers before, but it
> semes that very few people  use devfs. Yesterday i checked with
> 0.9rc8d (previous tests with 0.9rc7) and the problem is  still there.

this is the bug of soundcore.c, not the ALSA itself.
try the patch in alsa-driver/utils/patches directory.


Takashi


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