> Inspecting the legousbtower.c code reveals that it behaves the same way.
>
> The offending line is the down() call in the
> tower_interrupt_in_callback. (named adu_interrupt_in_callback in my code)
>
> The down() function in ./include/asm/semaphore.h calls
> might_sleep in ./kernel/sc
Hi David (and others),
The Lego tower USB interface is very similar to the ADU200 board from
Ontrak Control Systems.
I downloaded the 0.56 Lego Tower driver for Linux 2.6.0-test7
and modified it slightly to refer to ADU200 devices.
(global replace of constants).
I am running Redhat 8.0 with kern
