Re: VIA VT82C686 AC97 hickup
From: Marcelo Tosatti (marcelo.tosatti_at_cyclades.com)
Date: 04/30/04
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Date: Fri, 30 Apr 2004 09:19:25 -0300 To: Henrik Persson <nix@syndicalist.net>
On Mon, Mar 22, 2004 at 04:29:36PM +0100, Henrik Persson wrote:
> Hi.
>
> For a month or two I've been experiencing some trouble with the VIA AC97
> sound card attached to my motherboard.. The machine in question is
> running smoothly and playing mp3s and movies and then all of a sudden
> (usually when it has been on for about 10 days or so) this will flood
> dmesg and /var/log/messages:
>
> Mar 22 16:22:43 eurisco kernel: Assertion failed! chan->is_active ==
> sg_active(chan->iobase),via82cxxx_audio.c,via_chan_maybe_start,line=1388
>
> Any ideas?
I'm always seeing this too in my box (which is running 2.6.0).
Jeff, Alan, the assert seem erroneous?
/**
* via_chan_maybe_start - Initiate audio hardware DMA operation
* @chan: Channel whose DMA is to be started
*
* Initiate DMA operation, if the DMA engine for the given
* channel @chan is not already active.
*/
static inline void via_chan_maybe_start (struct via_channel *chan)
{
assert (chan->is_active == sg_active(chan->iobase));
and
static int sg_active (long iobase)
{
u8 tmp = inb (iobase + VIA_PCM_STATUS);
if ((tmp & VIA_SGD_STOPPED) || (tmp & VIA_SGD_PAUSED)) {
printk(KERN_WARNING "via82cxxx warning: SG stopped or paused\n");
return 0;
}
if (tmp & VIA_SGD_ACTIVE)
return 1;
return 0;
}
The driver works normally, even with the assert happening:
via_audio: ignoring drain playback error -11
via_audio: ignoring drain playback error -11
via_audio: ignoring drain playback error -11
Assertion failed! chan->is_active == sg_active(chan->iobase),sound/oss/via82cxxx _audio.c,via_chan_maybe_start,line=1388
Assertion failed! chan->is_active == sg_active(chan->iobase),sound/oss/via82cxxx _audio.c,via_chan_maybe_start,line=1388
Assertion failed! chan->is_active == sg_active(chan->iobase),sound/oss/via82cxxx _audio.c,via_chan_maybe_start,line=1388
Assertion failed! chan->is_active == sg_active(chan->iobase),sound/oss/via82cxxx _audio.c,via_chan_maybe_start,line=1388
Assertion failed! chan->is_active == sg_active(chan->iobase),sound/oss/via82cxxx _audio.c,via_chan_maybe_start,line=1388
Assertion failed! chan->is_active == sg_active(chan->iobase),sound/oss/via82cxxx _audio.c,via_chan_maybe_start,line=1388
via_audio: ignoring drain playback error -11
via_audio: ignoring drain playback error -11
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