Re: hw_pointer error message triggered without need

[Takashi Iwai <tiwai@suse.de>]

At Wed, 22 Oct 2003 10:16:47 +0200,
Tobias Peters wrote:
> 
> >>Anyway, I think that we should leave the check as is for debugging
> >>purposes (we should know that something is failing).
> > 
> > 
> > sure, it's harmless message (as long as it comes from
> > snd_pcm_update_hw_ptr()) but too annoying.  there are too many
> > sloppy hardwares...
> 
> After printing the error message is printed, the function returns 
> immediately. Can you confirm that this does not have negative side 
> effects like dropped frames?

no, the hwptr must be updated correctly in
snd_pcm_update_hw_ptr_interrupt() anyway.

> Besides, the error messages popping up in the console interfere visually 
> with the text mode interface of the sound app that I use.

this is likely because irq is not handled correctly when framebuffer
is switched.  the framebuffer is a bad source of irq blocking.


Takashi


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