kern/87782: [sound] snd_t4dwave and pcm0:record:0: record interrupt timeout, channel dead

Pyun YongHyeon pyunyh at gmail.com
Tue Oct 10 00:16:53 PDT 2006


On Sat, Oct 07, 2006 at 04:52:02PM -0400, Anish Mistry wrote:
 > On Monday 21 November 2005 10:30, Marian Cerny wrote:
 > > The following reply was made to PR kern/87782; it has been noted by
 > > GNATS.
 > >
 > > From: Marian Cerny <jojo at matfyz.cz>
 > > To: bug-followup at FreeBSD.org, freebsd at fadesa.es
 > > Cc:
 > > Subject: Re: kern/87782: [sound] snd_t4dwave and pcm0:record:0:
 > > record interrupt timeout, channel dead Date: Mon, 21 Nov 2005
 > > 16:29:00 +0100
 > >
 > >  I have the same problem on FreeBSD 5.4-RELEASE-p1.
 > >
 > >  # dmesg | grep pcm
 > >  pcm0: <Acer Labs M5451> port 0x8400-0x84ff mem
 > > 0xf0011000-0xf0011fff irq 5 at device 8.0 on pci0 pcm0: <Analog
 > > Devices AD1886A AC97 Codec>
 > >  pcm0:record:0: record interrupt timeout, channel dead
 > pcm0: <Acer Labs M5451> port 0x1000-0x10ff mem 0xfc101000-0xfc101fff 
 > irq 9 at device 4.0 on pci0
 > pcm0: <SigmaTel STAC9756/57 AC97 Codec>
 > pcm0: <Acer Labs M5451> at io 0x1000 irq 9 kld snd_t4dwave (4p/1r/1v 
 > channels duplex default)
 > 
 > I'm still seeing this with -CURRENT.  I can give access to someone if 
 > they need access.

Hmm... I think I've posted a possible fix log time ago but got no
reply. Would you please try attached patch?
If it work for you I'll make complete patch.

-- 
Regards,
Pyun YongHyeon
-------------- next part --------------
--- t4dwave.c.orig	Tue Mar  1 17:58:05 2005
+++ t4dwave.c	Tue Oct 10 16:11:35 2006
@@ -725,7 +725,7 @@
 	intsrc = tr_rd(tr, TR_REG_MISCINT, 4);
 	if (intsrc & TR_INT_ADDR) {
 		chnum = 0;
-		while (chnum < 64) {
+		while (chnum < 32) {
 			mask = 0x00000001;
 			active = tr_rd(tr, (chnum < 32)? TR_REG_ADDRINTA : TR_REG_ADDRINTB, 4);
 			bufhalf = tr_rd(tr, (chnum < 32)? TR_REG_CSPF_A : TR_REG_CSPF_B, 4);


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