Re: Hotplug usb-storage device

[David Brownell <david-b@pacbell.net>]

> Is it possible get hotpluging to work on a datafab smartmedia reader.
> Ther is no problem to load the usb-storage and the sd_mod by hand and
> use it.

So the problem is only to find out why the usb.agent script doesn't
handle it.  I have my guess below ... but you can debug such things
yourself pretty easily.

You can snapshot the environment variables given to the hotplug
script, or an agent, by adding a line line "env > /tmp/variables"
to the script.  Then turn those into a script that just assigns and
exports (!) the variables listed up at the front ... use it to call
"sh -x usb.agent" (or "pci.agent" or whatever) to see exactly
what it's doing.  With that kind of debug output, it's easy to find
and fix problems.


> Checked that the script use modules.usbmap in $KERNEL
> and it has the line for the reader.
>
> usb-storage    0x000f    0x07c4    0xa006    0x0000    0xffff    0x00
> 0x00    0x00    0x00    0x00    0x00
>  0x00000000
> 
> /var/log/messages  (when plugged)
> 
> hub.c: USB new device connected on bus1/1, assigned device number 3
> usb.c: Usb device 3 (vend/prod 0x7c4/0xa006) is not clamed by any active
> driver.
> /etc/hotplug/usb.agent: ... no driver for USB product 7c4/a006/15

Likely you're hitting a problem in the range handling.  Why don't you
just add an entry for product 07c4/a006 to /etc/hotplug/usb.handmap
that only lists product and version?  (And if the current version of the
script, in CVS, needs a patch ... please submit it!)

- Dave



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