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Date: Wed, 05 Dec 2001 18:57:32 -0500
From: Nathan Bryant <nbryant@optonline.net>
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To: Nathan Bryant <nbryant@optonline.net>
CC: Doug Ledford <dledford@redhat.com>, Mario Mikocevic <mozgy@hinet.hr>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: i810 audio patch
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Nathan Bryant wrote:

> Doug Ledford wrote:
>
>> Can you add a debug check to update_lvi()?  Something like:
>>
>> #ifdef DEBUG_MMAP
>>         if (dmabuf->count > dmabuf->fragsize && inb(port+OFF_CIV) == x)
>>                 printk(KERN_DEBUG,"i810_audio: update_lvi - CIV == 
>> LVI\n");
>> #endif
>>
>> and see if that triggers with the original mmap code? 
>
>
> I've narrowed it down a little more.. the above does not trigger. but 
> i've added some other printk's and the sequence of events goes like this: 

sorry... syslog.conf was not configured for DEBUG level...

it actually looks like this

Dec  5 18:55:17 lasn-001 kernel: SNDCTL_DSP_GETOPTR: count = 0
Dec  5 18:55:17 lasn-001 kernel: GETOPTR: setting swptr 0, hwptr=65536
Dec  5 18:55:17 lasn-001 kernel: i810_audio: update_lvi - CIV == LVI
Dec  5 18:55:17 lasn-001 kernel: SNDCTL_DSP_GETOPTR 65536, 4, 65536, 65536
Dec  5 18:55:17 lasn-001 kernel: SNDCTL_DSP_GETOPTR: count = 65536
Dec  5 18:55:17 lasn-001 kernel: DAC HWP 65536,65536,0
Dec  5 18:55:17 lasn-001 kernel: GETOPTR: setting swptr 0, hwptr=65536
Dec  5 18:55:17 lasn-001 kernel: i810_audio: update_lvi - CIV == LVI
Dec  5 18:55:17 lasn-001 kernel: SNDCTL_DSP_GETOPTR 65536, 0, 65536, 65536
Dec  5 18:55:17 lasn-001 kernel: SNDCTL_DSP_GETOPTR: count = 65536
Dec  5 18:55:17 lasn-001 kernel: DAC HWP 65536,65536,0
Dec  5 18:55:17 lasn-001 kernel: GETOPTR: setting swptr 0, hwptr=65536
Dec  5 18:55:17 lasn-001 kernel: i810_audio: update_lvi - CIV == LVI
Dec  5 18:55:17 lasn-001 kernel: SNDCTL_DSP_GETOPTR 65536, 0, 65536, 65536
Dec  5 18:55:17 lasn-001 kernel: SNDCTL_DSP_GETOPTR: count = 65536
Dec  5 18:55:17 lasn-001 kernel: DAC HWP 65536,65536,0

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