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Date:      Mon, 10 Mar 2003 13:45:39 +0900 (JST)
From:      Mamoru Iwaki <iwaki@bc.niigata-u.ac.jp>
To:        stable@FreeBSD.ORG
Subject:   Re: cdcontrol via atapicam in 4.8-RC
Message-ID:  <20030310044541.10713.qmail@pikachu.bsp.bc.niigata-u.ac.jp>
In-Reply-To: <20030309073546.A19190@panzer.kdm.org>
References:  <20030306124454.5330.qmail@pikachu.bsp.bc.niigata-u.ac.jp> <20030309073546.A19190@panzer.kdm.org>

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From: "Kenneth D. Merry" <ken@kdm.org>
Subject: Re: cdcontrol via atapicam in 4.8-RC
Date: Sun, 9 Mar 2003 07:35:46 -0700

> On Thu, Mar 06, 2003 at 21:44:51 +0900, Mamoru Iwaki wrote:
> > Hi,
> > 
> > I cannot playback music from audio CD via atapicam using cdcontrol
> > in 4.8-RC while mounting of iso9660 data CD works well.  
> > Is it a spec. of atapicam ? 

> > The above operations make the following messages in
> > /var/log/messages without any playbacked sound.  
> > 
> > Mar  6 21:23:59 mi000 /kernel: (cd1:ata1:0:0:0): MODE SELECT(06). CDB: 15 10 0 0 1c 0 
> > Mar  6 21:23:59 mi000 /kernel: (cd1:ata1:0:0:0): ILLEGAL REQUEST asc:1a,0
> > Mar  6 21:23:59 mi000 /kernel: (cd1:ata1:0:0:0): Parameter list length error

> This is a known problem.
> 
> I fixed it in current, but the code has not yet been MFCed.
> 
> Until I do that (most likely after 4.8 goes out the door), try using the
> regular ATAPI CD device with cdcontrol.  e.g.:
> 
> cdcontrol -f /dev/acd1c

I see.  

Hopefully, it would be fixed in 4.8-RELEASE because enabling both
atapicam and atapi?? looks dangerous; i.e. it is hard to guarantee
mutually exclusive access to the device, and there is no description
in case that the device is accessed via both ways simultaneously.  

Thank you for your advice.
---
-----
Mamoru IWAKI   (iwaki@bc.niigata-u.ac.jp)
Graduate School of Science and Technology, Niigata University

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