linux-kernel - Re: mcdx -- do_request(): non-read command to cd!!

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Date:	Mon, 02 Apr 2007 17:39:09 +0200
From:	Rene Herman <rene.herman@...il.com>
To:	Jens Axboe <jens.axboe@...cle.com>
CC:	Pekka J Enberg <penberg@...helsinki.fi>,
	Al Viro <viro@....linux.org.uk>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: mcdx -- do_request(): non-read command to cd!!

On 04/02/2007 09:10 AM, Jens Axboe wrote:

> Updated patch attached :-)
> 
> diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
> index 0bc8b0b..cff761a 100644
> --- a/Documentation/feature-removal-schedule.txt
> +++ b/Documentation/feature-removal-schedule.txt
> @@ -324,3 +324,10 @@ Why:	the i8xx_tco watchdog driver has been replaced by the iTCO_wdt
>  Who:	Wim Van Sebroeck <wim@...ana.be>
>  
>  ---------------------------
> +
> +What:	The legacy CDROM drivers (drivers/cdrom/, except cdrom.c)
> +When:	In 2.6.23

Not going to complain about it loudly. I like playing with these old 
drives, but the drivers are so immensely broken that they don't seem to 
serve a very useful purpose anymore; even if I, or someone else, would 
ever get around to try and revive this hardware under Linux; the current 
state of these drivers seems to imply we'd be better of starting from 
scratch.

And even more so since I expect that any new attempts should do the "no 
really, I'm a scsi drive" thing that most anything else is doing these 
days. Using a different infrastructure like that would, I presume, mean 
that really only the hardware details would remain useful from the old 
drivers, and those will be present inside linux-2.6.22.tar.gz same as 
before.

Having said that, it would still be good to have mcdx functional so 
please don't let me keep you, Pekka, or anyone else from looking :-)

With a bit of luck sbpcd and cdu31a (and cm206 as the other controller 
that I have) will be similarly broken and having an example in mcdx will 
be useful whatever happens to the drivers in the upstream tree...

> +Why:	They are all terminally broken (most don't even compile)

That's not true though... I just checked and they all compile on 
2.6.20.4. sbpcd and cm206 with cli/sti warnings, the others without even.

Rene.
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