On Sat, 28 Feb 2009, David Brownell wrote: > Got a version that applies to mainline GIT? http://tglx.de/~tglx/patches.tar.bz2 > At a quick glance it looks like these patches don't cover > set_irq_chained_handler(), which would be trouble since > __setup_irq() doesn't get called in those cases. Hmm, I did not think about chained handlers where the demux handler needs to run in a thread as well. Usually demux handlers just have a fast path kicking the particular real handlers. > They should however handle simpler cases, like I2C devices > that only expose one IRQ instead of needing to demux several > dozen IRQs going to different drivers and subsystems. > > And, not touching lockdep, the original ugliness will still > be needed (re-enabling IRQs in threaded handlers). Err ? The threaded handlers run with interrupts enabled. static int irq_thread(void *data) { ... while (!kthread_should_stop()) { set_current_state(TASK_INTERRUPTIBLE); if (irq_thread_should_run(action) && current->irqaction) { __set_current_state(TASK_RUNNING); action->handler(action->irq, action->dev_id); } else schedule(); } Thanks, tglx -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
