I have a very basic doubt here ... what makes it impossible to sleep in an ISR? I mean, I know that the kernel preemption is disabled and the kernel will panic, but I could not understand why? TIA, LL -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ