29-rc2 remaining breakage

Michael Trimarchi trimarchi at gandalf.sssup.it
Sun Feb 1 09:38:14 CET 2009


Andy Green wrote:
> Hash: SHA1
> Somebody in the thread at some point said:
> | On Sat, Jan 31, 2009 at 11:33 AM, Andy Green <andy at openmoko.com>
> | (cut)
> |> It seems 2.6.29 has impacted this because otherwise we did not meddle
> |> with this area.
> |
> | Do you think we need to try a newer version of alsa in the rootfs?
> | I've read alsa has been changing.
> I don't think it's that simple.  I saw there are changes pending off
> alsa list from Mark Brown including one that Michael took care about
> already (NULL regigstration lookups we saw).
> I fear we have to dig into the thing enough to understand why the mixer
> controls have gone away.
> Either it's intentional and wm8753 driver changed to no longer expose
> them, or it's accidental and then we are not setting the state of those
> hardware elements any more down at the chip with aslactl.
I don't check a lot, but that controls exist, or now the access to them 
an error to the alsa library? When alsa library do the cycle to read the 
file and fails, abort all other control registration and inizialization.
> What will give results is build an older version, and add printks to see
> where and when these now missing mixer controls get registered.  Then go
> back to HEAD and follow the same path until it differs, then we know the
> issue.
I do a test with the older version and all seems to be equal. I 
recompile test control.c
and report the same structure. The filesystem is the same, the widget 
element too. I will
check for mixer name that I removed, can you check too?
> - -Andy
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