Re: [lcd4linux] unpluging the usb device-bug?

[Ernst B. <e.b...@xe...>]

On Friday 08 September 2006 11:29, tasos wrote:
> I'm using crystalfontz 635.
>
That device isn`t actually accessed as an USB device, it uses the 
drv_generic_serial functions.
There's probably an USB->Serial converter on the display.

I'm not sure how the kernel "usb_serial" driver handles disconnects, when 
there`s still an open handle (and don`t have such an device to test right 
now)

Could you post some dmesg output and lcd4linux -F -v -v -v output captured 
while disconnecting?

But generally, that device driver doens`t look like it does any error handling 
at all for that case.
(Error return codes from the drv_generic_serial functions are silently 
ignored, and not propagated back to the core)

/Ernst