What about something like the following (drivers/macintosh/adb.c): add_wait_queue(&state->wait_queue, &wait); current->state = TASK_INTERRUPTIBLE; for (;;) { req = state->completed; if (req != NULL) state->completed = req->next; else if (atomic_read(&state->n_pending) == 0) ret = -EIO; if (req != NULL || ret != 0) break; if (file->f_flags & O_NONBLOCK) { ret = -EAGAIN; break; } if (signal_pending(current)) { ret = -ERESTARTSYS; break; } spin_unlock_irqrestore(&state->lock, flags); schedule(); spin_lock_irqsave(&state->lock, flags); } current->state = TASK_RUNNING; remove_wait_queue(&state->wait_queue, &wait); There is a call to schedule eventually after the first current->state assignment, but it is not right after. thanks, julia -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html