I've noticed that since I upgraded to 2.6.15, my IDE DVD ROM
is assigned a bogus SCSI level. Here is output from /proc/scsi/scsi:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: HL-DT-ST Model: DVD-ROM GDR8082N Rev: 0106
Type: CD-ROM ANSI SCSI revision: 0xffffffff
Here's what I get with 2.6.8.1:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: HL-DT-ST Model: DVD-ROM GDR8082N Rev: 0106
Type: CD-ROM ANSI SCSI revision: 02
I did a little digging, and it seems that in drivers/scsi/sr.c,
function get_capabilities(), the call to scsi_mode_sense() is failing (it's returning 134217730).
On a side note, I can't watch DVDs on 2.6.15.
I have ide-scsi and sr-mod loaded as modules.
gcc version is 3.3.6
Here is the config for 2.6.8.1 : http://linux.ace-technologies.biz/config-2.6.8.1
Here is the config for 2.6.15: http://linux.ace-technologies.biz/config-2.6.15
I've tried booting with hdc=scsi; makes no difference.
Here's an excerpt from /var/log/messages:
Jan 19 20:46:29 boss kernel: [ 1.662575] hdc: HL-DT-STDVD-ROM GDR8082N, ATAPI CD/DVD-ROM drive
Jan 19 20:46:29 boss kernel: [ 1.969598] ide1 at 0x170-0x177,0x376 on irq 15
Jan 19 20:46:29 boss kernel: [ 2.039442] IP route cache hash table entries: 65536 (order: 6,
262144 bytes)
Jan 19 20:46:29 boss kernel: [ 2.039716] TCP established hash table entries: 262144 (order: 9,
2097152 bytes)
Jan 19 20:46:29 boss kernel: [ 2.040901] TCP bind hash table entries: 65536 (order: 7, 524288
bytes)
Jan 19 20:46:29 boss kernel: [ 2.042093] Using IPI Shortcut mode
Jan 19 20:46:29 boss kernel: [ 2.052961] VFS: Mounted root (ext2 filesystem) readonly.
Jan 19 20:46:29 boss kernel: [ 4.801179] ide-scsi is deprecated for cd burning! Use ide-cd and
give dev=/dev/hdX as device
Jan 19 20:46:29 boss kernel: [ 4.954103] sr0: scsi-1 drive
I've seen this same phenomena in the dmesg output of another posting on this list.
I can test patches if needed.
Additional info will be provided upon request.
-Alex
I code, therefore I am
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