[alsa-devel] LSI HDA Modem is not working on HP new Laptop which has IDT 7605 HDA codec and REDHAT installed on it with ALSA ver 1.0.24.

[Raymond Yau]

2011/9/29 Takashi Iwai <tiwai at suse.de>:
> At Thu, 29 Sep 2011 14:01:40 +0530,
> suresh gupta wrote:
>>
>> Sorry for delay, I was out for Lunch.
>>
>> I believe we are in sink now, I seen the purity_inactive_streams part of
>> code and found this is totally new logic in 1.0.24 ver. Can you please
>> answer some question for my proper understanding?
>>
>> 1. Why this marking stream dirty come into picture and why ALSA code do not
>> directly clear the AC_VERB_SET_CHANNEL_STREAMID while closing?
>
> For keeping the same stream tag for the same device.
> A device is often shortly closed and reopened.  It'd be better to keep
> the same stream tag for such a case.

I have doubt about this since hw_free() can also cleanup the stream tag too

http://thread.gmane.org/gmane.linux.alsa.devel/89420

>
>> 2. Why Analog devices codec (patch_analog.c) clear
>> AC_VERB_SET_CHANNEL_STREAMID on close? (if (do_now)
>>    really_cleanup_stream(codec, p);
>
> It's because AD codecs (according to bug reports) don't like the
> sticky-tag feature by some reason.  It'll be removed, once when the
> real culprit is found.
>
>

http://thread.gmane.org/gmane.linux.alsa.devel/78379

Can the converters can retrain the stream tag after suspend/resume ?