Re: Bug 000384 & debugging ALSA drivers.

[Takashi Iwai <tiwai@suse.de>]

At Fri, 30 Jul 2004 12:04:22 +0100,
<bbennetts@blueyonder.co.uk> wrote:
> 
> Hi all,
> 
> I was considering trying to debug the above problem in the ymfpci
> driver.  However, I have never had to work on a driver before and so
> was wondering if anyone had any tips/suggestions on where to start
> (e.g. easiest way to debug the kernel etc) also any known stumbling
> blocks to look out for.  If there's a good doc on the web that'd also
> be a big help. 

First of all, it'd be better to read a linux device driver book.
A good one is by Alessandro Rubini.

The easiest way for debugging the kernel is traditional - adding
printk() in some points :)

I guess some register initializations are missing, so comparing the
register dumps between ALSA and OSS drivers might help.
(Or PCI register for legacy setting?)


Takashi


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