Re: ALSA busted in 2.5.69

walt (wa1ter@hotmail.com)
Fri, 09 May 2003 11:14:37 -0700


Torrey Hoffman wrote:
> On Fri, 2003-05-09 at 01:09, Giuliano Pochini wrote:
>
>>On 08-May-2003 Torrey Hoffman wrote:
>>
>>>ALSA isn't working for me in 2.5.69. It appears to be because
>>>/proc/asound/dev is missing the control devices.
>
> ...
>
>>If you are not using devfs, you need to create the devices. There is a
>>script in the ALSA-driver package to do that. Otherwise I can't help
>>you because I never tried devfs and linux 2.5.x.
>
>
> No. /dev/snd is a symbolic link to /proc/asound/dev,
> and that symbolic link was created by the script you mention.
> (I am not using devfs.)
>
> So the missing "/dev/snd/controlC0" should actually be created
> by the ALSA modules in the proc filesystem as
> "/proc/asound/dev/controlC0". But only the timer device is there.

Warning: I'm no expert on any of this -- but -- I'm listening to sound
right now using 2.5.69 (with devfs) and this is what I see:

There are NO symlinks from /dev to /proc. None.

/dev/snd and /dev/sound are real directories -- neither is a symlink.

#ls -l /dev/snd
total 0
crw------- 1 wa1ter audio 116, 0 Dec 31 1969 controlC0
crw------- 1 wa1ter audio 116, 32 Dec 31 1969 controlC1
crw------- 1 wa1ter audio 116, 64 Dec 31 1969 controlC2
crw------- 1 wa1ter audio 116, 96 Dec 31 1969 controlC3
crw------- 1 wa1ter audio 116, 128 Dec 31 1969 controlC4
crw------- 1 wa1ter audio 116, 160 Dec 31 1969 controlC5
crw------- 1 wa1ter audio 116, 192 Dec 31 1969 controlC6
crw------- 1 wa1ter audio 116, 224 Dec 31 1969 controlC7
crw------- 1 wa1ter audio 116, 24 Dec 31 1969 pcmC0D0c
crw------- 1 wa1ter audio 116, 16 Dec 31 1969 pcmC0D0p
crw------- 1 wa1ter audio 116, 25 Dec 31 1969 pcmC0D1c
crw------- 1 wa1ter audio 116, 17 Dec 31 1969 pcmC0D1p
crw------- 1 wa1ter audio 116, 1 Dec 31 1969 seq
crw------- 1 wa1ter audio 116, 33 Dec 31 1969 timer

#ls -l /dev/sound
total 0
crw------- 1 wa1ter audio 14, 12 Dec 31 1969 adsp
crw------- 1 wa1ter audio 14, 4 Dec 31 1969 audio
crw------- 1 wa1ter audio 14, 3 Dec 31 1969 dsp
crw------- 1 wa1ter audio 14, 0 Dec 31 1969 mixer
crw------- 1 wa1ter audio 14, 1 Dec 31 1969 sequencer
crw------- 1 wa1ter audio 14, 8 Dec 31 1969 sequencer2

#ls -l /dev/dsp
lr-xr-xr-x 1 root root 9 May 9 10:33 /dev/dsp -> sound/dsp
#ls -l /dev/adsp
lr-xr-xr-x 1 root root 10 May 9 10:33 /dev/adsp -> sound/adsp

Seems to me that any symlinks to /proc don't really belong in /dev.
Any opinions to the contrary? (Remember: my sound is working just fine.)

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/