[alsa-devel] [PATCH] ad1838/cs4231 -- fix MCE timeout upon initial load

[Rene Herman]

On 09/18/2007 02:17 AM, Rene Herman wrote:

>> Second, schedule_timeout() returns immediately unless you have set the
>> task state to TASK_UNINTERRUPTIBLE or TASK_INTERRUPTIBLE.  I don't see
>> anywhere where this is done, so the 250ms delay is in fact a busy loop.
>> The call to schedule_timeout() appears to be quite pointless.
> 
> That mce_down code was changed over the last week by Krzysztof, myself 
> and Takashi so not sure what version you've been looking at, but the 
> (original) version that the quoted patch was against didn't use 
> schedule_timeout, but a timeout based sleeping loop for cs4231 and 
> schedule_timeout_interruptible() for ad1848 which sets the state itself.

Oh. This discrepency is caused by the fact that I work against the kernel 
and only check ALSA HG every once in a while. Too infrequently it seems as 
the _interruptible was recently (and yes, wrongly) removed from ALSA:

http://hg.alsa-project.org/alsa-kernel/rev/1768363a5f1e

It's still there in 2.6.22.x which I run. The setup has been changed around 
in the meantime again anyway in this case but I guess I'll make a point of 
working against HG more directly.

Rene.