[Fwd: Re: [alsa-devel] [regression] 2.6.25-rc4 snd-es18xx broken on Alpha]

[Tyson Whitehead <twhitehe@uwo.ca>]

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Sorry.  Bob was just saying this could be an important observation, but 
it didn't get to everyone as the CC list got shortened.  Cheers!  -Tyson


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From: Tyson Whitehead <twhitehe@uwo.ca>
To: Bob Tracy <rct@frus.com>
Cc: Takashi Iwai <tiwai@suse.de>
Subject: Re: [alsa-devel] [regression] 2.6.25-rc4 snd-es18xx broken on Alpha
Date: Tue, 01 Apr 2008 15:23:58 -0400
Message-ID: <47F28BCE.9090108@uwo.ca>

Bob Tracy wrote:
> Takashi Iwai wrote:
>> I vaguely remember about the patch...  The patch below was on my local
>> tree but never pushed because of lack of testing.  Does it work for
>> you?
>>
>> ---
>>
>> diff -r 82e6201fc907 sound/isa/es18xx.c
>> --- a/sound/isa/es18xx.c	Mon Mar 17 14:36:24 2008 +0100
>> +++ b/sound/isa/es18xx.c	Mon Mar 17 17:32:59 2008 +0100
>> @@ -765,9 +765,10 @@ static irqreturn_t snd_es18xx_interrupt(
>>  		/* Read Interrupt status */
>>  		status = snd_es18xx_mixer_read(chip, 0x7f) >> 4;
>>  	}
>> -#if 0
>> -	else {
>> -		status = 0;
>> +
>> +#ifdef CONFIG_ALPHA
>> +	if (!(status & (AUDIO1_IRQ | AUDIO2_IRQ))) {
>> +		/* status = 0; */
>>  		if (inb(chip->port + 0x0C) & 0x01)
>>  			status |= AUDIO1_IRQ;
>>  		if (snd_es18xx_mixer_read(chip, 0x7A) & 0x80)
>> @@ -777,7 +778,6 @@ static irqreturn_t snd_es18xx_interrupt(
>>  			status |= HWV_IRQ;
>>  	}
>>  #endif
>> -
>>  	/* Audio 1 & Audio 2 */
>>          if (status & AUDIO2_IRQ) {
>>                  if (chip->active & DAC2)
>> --
> 
> The above patch doesn't make any difference for me as far as how the
> ES1888 works.  I get the same broken behavior as previously described.

I wonder if the difference between Bob and I (i.e., that I can get sound 
working with patching while he cannot) might be that all along I've been 
using CONFIG_ALPHA_GENERIC, while he has (possibly -- he will have to 
confirm this) been using CONFIG_ALPHA_MIATA.

As I mentioned in the email I just sent out, I just finished discovering 
that if I compile with CONFIG_ALPHA_MIATA, I can't get sound to work no 
matter what I do (patched or unpatched es18xx or sb8).

When I compile with CONFIG_ALPHA_GENERIC I can get sound working (modulo 
this new "Bad page state in process 'mpg321'" thing that started 
sometime after 2.6.14) with either the patched es18xx or standard sb8.

Cheers!  -Tyson