29-rc2 remaining breakage / ALSA

[Michael Trimarchi]

Hi,

Andy Green wrote:
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> Somebody in the thread at some point said:
>
> | But I think is related to the capture/playback device. The only big
> | change seems the registration
> | of the controls. The amixer dump gives us the answer I think.
>
> Hm it seems the difference may be that before, that ALSA stuff used to
> truncate the control name to 30 chars?
>
> When I install FSO unstable on my SD card and then try alsactl restore
> from the default /etc/asound.state that is installed, I see:
>
> root at om-gta02:~# alsactl restore
> alsactl: set_control:989: warning: name mismatch (Playback Mixer Voice
> Capture Sw/Playback Mixer Voice Capture Switch) for control #68
> alsactl: set_control:991: warning: index mismatch (0/0) for control #68
> alsactl: set_control:993: failed to obtain info for control #68 (No
> buffer space available)
>
> And it's true when I look in that asound.state at #68 I see
>
> \0x09control.68 {
> \0x09\0x09comment.access 'read write'
> \0x09\0x09comment.type BOOLEAN
> \0x09\0x09comment.count 1
> \0x09\0x09iface MIXER
> \0x09\0x09name 'Playback Mixer Voice Capture Sw'
> \0x09\0x09value false
> \0x09}
>
> However if I do an alsactl store, and look at #68 from the new
> asound.state, I see
>
> \0x09control.68 {
> \0x09\0x09comment.access 'read write'
> \0x09\0x09comment.type BOOLEAN
> \0x09\0x09comment.count 1
> \0x09\0x09iface MIXER
> \0x09\0x09name 'Playback Mixer Voice Capture Switch'
> \0x09\0x09value false
> \0x09}
>
> Just as it says, the name has evidently "changed" or at least is not
> truncated any more.
>
> If this is the issue then it just randomly affects ALSA controls with
> "long names".
>
> I dread to think about the hassle of making a new "dimension" of alsa
> states based not only on device and hardware revision, but by kernel
> revision.
>
> So I will take a look at seeing if we can either change the names to be
> truncated by definition or truncate them for compatability.
>
> - -Andy
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Try this.

Michael
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