Re: scsi_cd or atapicam crash in current.

On Sun, 14 Sep 2003, Vladimir Kushnir wrote:

> Hello,
> here camcontrol still shows bogus numbers when there's no CD:
> 
> #camcontrol cmd cd0 -v -c "25 0 0 0 0 0 0 0 0 0" -i 8 "i4 i4"
> -791621424 -791621424
> 
> No boot crashes, though, only the usual ones due to cdrecord usage
> which nobody seem to care about :-(

I too have problems similar to this.  On one box, the kernel panics
(see message posted Sep 10, subject "Panic with ATAng + atapicam").
With or without atapicam, a CD is detected as being present when
it is not.  On another box (Dell Inspiron 4150 laptop), an atapicam
kernel doesn't crash, but I still get the same bogus CD detection:

ad0: 28615MB <FUJITSU MHS2030AT> [58140/16/63] at ata0-master UDMA100
acd0: CDRW <HL-DT-STCD-RW/DVD-ROM GCC-4240N> at ata1-master UDMA33
cd0 at ata1 bus 0 target 0 lun 0
cd0: <HL-DT-ST RW/DVD GCC-4240N D110> Removable CD-ROM SCSI-0 device 
cd0: 33.000MB/s transfers
cd0: cd present [3737169375 x 3737169374 byte records]

I also get the 15-20 second delay which other folks started to see.
camcontrol on this box gives the same results that you have:

# camcontrol cmd cd0 -v -c "25 0 0 0 0 0 0 0 0 0" -i 8 "i4 i4"
-791621424 -791621424 

I think it is the ATAPI code; removing atapicam from the kernel
still shows false CD detection.

-- 
Dan Eischen