2.4.0 test13-pre7 still causes CDROM ioctl errors

2.4.0 test13-pre7 still causes CDROM ioctl errors

[Raphael Manfredi]

I had sent the following report a week ago:

--------------------------
Since I've installed 2.4.0 test13-pre4, I see the following errors
in my log:

	sr0: CDROM (ioctl) reports ILLEGAL REQUEST.

and xmcd reports:

	CD audio: ioctl error on /dev/scd0: cmd=CDROMVOLCTRL errno=95

This was working fine with 2.4.0 test12-pre5, which was the previous
kernel I was using.
-------------------------

Well, I installed 2.4.0 test13-pre7 and I still have the same error.

My CDROM driver is SCSI, connected to a Tekram DC390.  I use
the am53c974 driver.

Something must have changed in this driver since 2.4.0 test12-pre5 which
broke the ioctl() handling routine.

Raphael
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Re: 2.4.0 test13-pre7 still causes CDROM ioctl errors

[Jens Axboe]

On Sun, Dec 31 2000, Raphael Manfredi wrote:
> I had sent the following report a week ago:
> 
> --------------------------
> Since I've installed 2.4.0 test13-pre4, I see the following errors
> in my log:
> 
> 	sr0: CDROM (ioctl) reports ILLEGAL REQUEST.
> 
> and xmcd reports:
> 
> 	CD audio: ioctl error on /dev/scd0: cmd=CDROMVOLCTRL errno=95
> 
> This was working fine with 2.4.0 test12-pre5, which was the previous
> kernel I was using.
> -------------------------
> 
> Well, I installed 2.4.0 test13-pre7 and I still have the same error.

Appears audio capabilities are not being detected as supported. What
does /proc/sys/dev/cdrom/info say? And what does the sr_mod load line
look like?

-- 
* Jens Axboe <axboe@suse.de>
* SuSE Labs
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2.4.0 test13-pre7 still causes CDROM ioctl errors

[Raphael Manfredi]

[Saw your reply on the web archive: I'm not subscribed to linux-kernel.
 Cc-ing the list for archive -- I've faked an In-Reply-To for correct
 threading].

A "cat /proc/sys/dev/cdrom/info" says
(I have 2 CD-ROMs, but the one with ioctl() errors is the SCSI one)

    CD-ROM information, Id: cdrom.c 3.12 2000/10/18

    drive name:             sr0     hdb
    drive speed:            1       1
    drive # of slots:       1       1
    Can close tray:         1       1
    Can open tray:          1       1
    Can lock tray:          1       1
    Can change speed:       0       1
    Can select disk:        1       0
    Can read multisession:  1       1
    Can read MCN:           1       1
    Reports media changed:  1       1
    Can play audio:         1       1
    Can write CD-R:         1       0
    Can write CD-RW:        1       0
    Can read DVD:           1       0
    Can write DVD-R:        1       0
    Can write DVD-RAM:      1       0

Apparently, it recognizes its audio-playing capabilities.

However, this is NOT a CD writer, and I don't know why it's saying it
can *write* CDs.  This CD-ROM is:

    Host: scsi1 Channel: 00 Id: 02 Lun: 00
      Vendor: PLEXTOR  Model: CD-ROM PX-40TS   Rev: 1.01
      Type:   CD-ROM                           ANSI SCSI revision: 02

As for sr_mod loading, I don't have any special flags specified
(no options in /etc/modules.conf).  But I did not have any either
previously.

The module "sr_mod" loads correctly:

    Module                  Size  Used by
    sr_mod                 12688   0 (autoclean)
    es1371                 29104   0 (autoclean)
    ac97_codec              7728   0 (autoclean) [es1371]
    vmnet                  17824   3
    vmmon                  19056   3
    nls_cp437               4352   2 (autoclean)

Note that this does not prevent correct playback from xmcd, i.e. the control
interface to launch the playback works correctly, xmcd just complains about
the ioctl() error.

However, I'm also running VMWare (as you can see with the vmnet and
vmmon modules), and it refuses to connect my SCSI CD-ROM device.  It says:

    CDROM: "/dev/cdrom" exists but does not appear to be a CDROM device

And /dev/cdrom is:

    /dev/cdrom -> /dev/scd0

Raphael
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