Hi, list, hi Alan,
I'm learning now much more about drivers as I intended to...
Am Donnerstag, 10. August 2006 17:34 schrieb Alan Stern:
> > Hmmm. As far I can see, this ALLOW_MEDIUM_REMOVAL is issued despite of
> > the blacklist entry. So:
> > # cat /proc/scsi/device_info | grep OPTAC
> > 'SRE ' 'OPTAC Tool ' 0x80000
> > Maybe OPTAC Tool does not match because of the spaces?
>
> The spaces shouldn't cause a problem; they are supposed to be there.
>
> This should have worked. I don't understand why the command was issued.
> If you feel up to a little kernel debugging, you can try to figure out
> the reason. Here are the things you need to know. Most of the files
> mentioned below are in the drivers/scsi/ directory of the kernel source.
>
[... lots of hints where to place printk statements ...]
Ok. I patched scsi_scan.c and scsi_ioctl.c, recompiled the modules and
replaced scsi_mod.ko; modprobe scsi_mod; cat "bla" > /proc/scsi/device_info;
plugged in.
----------------------------------
[...]
klaus scsi_get_device_flags: Vendor: >SRE<, Model: >OPTAC Tool 1.00<
klaus scsi_get_device_flags: devinfo->vendor: >SRE OPTAC Tool < (8),
devinfo->model: >OPTAC Tool < (16)
klaus scsi_probe_lun: bflags = 0
Vendor: SRE Model: OPTAC Tool Rev: 1.00
Type: Direct-Access ANSI SCSI revision: 00
usb-storage: queuecommand called
[...]
---------------------------------
This is disappointing. I modified the else part of scsi_get_device_flags:
else {
printk("klaus %s: Vendor: >%s<, Model: >%s<\n",
__FUNCTION__, vendor, model);
printk("klaus %s: devinfo->vendor: >%s< (%u),
devinfo->model: >%s< (%u)\n", __FUNCTION__, devinfo->vendor,
sizeof(devinfo->vendor), devinfo->model, sizeof(devinfo->model));
if (!memcmp(devinfo->vendor, vendor,
sizeof(devinfo->vendor)) &&
!memcmp(devinfo->model, model,
sizeof(devinfo->model))) {
printk("klaus %s: devinfo->bflags=%x",
__FUNCTION__, devinfo->flags);
return devinfo->flags;
}
}
So it looks like the entries in /proc/scsi/devinfo are bad. GRRR. I'll patch
in the Vendor and Model into the static table and retry.
Hrmpf
--
Klaus Muth
HAGOS eG Industriestr. 62 fon: (+49) 711 78805-86
EDV-Programmierung 70565 Stuttgart fax: (+49) 711 78805-35
http://www.hagos.de Germany mailto:[EMAIL PROTECTED]
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