From: Alan Chandler <alan@chandlerfamily.org.uk>
To: Jens Axboe <axboe@suse.de>
Subject: Re: ide-cd problem
Date: Tue, 23 Nov 2004 07:13:31 +0000
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On Monday 22 November 2004 23:48, Alan Chandler wrote:
...
> If I make the delay 600ns it works - I guess my hardware is a little off
> spec.
>

I did a binary chop on the value to find the cut off point between what works 
and what doesn't.  Its approx 535ns (534 failed, 537 worked).

All this was with 2.6.9, 

2.6.10-rc2 is still failing during the cd initialisation on boot.  Here I 
tried with bot 600ns and 700ns delays in drive_is_ready, but both values fail 
with what looks like missed interrupts.  I'll try instrumenting this a bit 
more to find out what is happening.

-- 
Alan Chandler
alan@chandlerfamily.org.uk
First they ignore you, then they laugh at you,
 then they fight you, then you win. --Gandhi
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