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

[Gildor Oronar]

The following reply was made to PR kern/87782; it has been noted by GNATS.

From: Gildor Oronar <gildororonar at mail-on.us>
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: Sat, 14 Apr 2012 16:42:32 +0800

 I have the same error message but on playback. Device is SiS 7018.
 
 [zhangweiwu at lugdunnum ~]$ dmesg | tail
 ath0: <Atheros 5212> irq 11 at device 0.0 on cardbus0
 ath0: AR5212 mac 5.9 RF5112 phy 4.3
 uhub0: 3 ports with 3 removable, self powered
 uhub1: 3 ports with 3 removable, self powered
 Trying to mount root from ufs:/dev/ada0s2a [rw]...
 wlan0: Ethernet address: 00:40:96:ae:79:d3
 drm0: <SiS 630> on vgapci0
 info: [drm] AGP at 0xe0000000 64MB
 info: [drm] Initialized sis 1.3.0 20070626
 pcm0: chn_write(): pcm0:play:dsp0.p1: play interrupt timeout, channel dead
 
 
 Note the last line of error message is only after playback for about 3
 seconds. The first 3 seconds playback fine though, with any software
 (tried mpg321 and xine -A oss).
 
 Since the patch you offered no longer can apply, I did the minimum
 change on t4dwave.c and compiled a new kernel, tried, without luck (same
 error mssage). What I did is:
 
 @@ -725,7 +726,7 @@
  	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
 
 
 Looking at the source code the problem triggered by "while (chnum < 64)"
 should have been fixed already, thus this bug should be closed, mine is
 probably a different one.
 
 Anything to try for me?