Messages in this thread | | | Date | Thu, 29 Nov 2007 11:30:34 -0500 (EST) | From | Steven Rostedt <> | Subject | Re: [PATCH PREEMPT_RT]: On AT91 ARM: GPIO Interrupt handling can/will stall forever |
| |
On Thu, 29 Nov 2007, Remy Bohmer wrote:
> I changed the interrupt handler from the simple_irq to the edge_irq, > and it works...!! > (I added a noop routine for that .ack part, because there is no ack) > > I believe I was too focussed on the masking bug in the RT kernel on > the simple_irq() that I did not see that for the AT91 series the edge > type interrupt handler also works... (even better...) What I thought > was 1 single bug in the RT-kernel turned out to be a number of things > together that aren't correct, even for mainline. > > So, to come to a conclusion: The masking bug in RT is still there in > the simple_irq path, and masking has to be removed from the simple_irq > code. Also for mainline. AT91 can live without simple_irq. > I think we are in sync again... > > I will post a patch for the AT91 later on, after some more testing.
Remy,
Thanks a lot for figuring this out!! Makes me feel better for the NACK ;-)
If you also want to send me a patch to remove the masking in the simple_irq code, please do.
Thanks,
-- Steve
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |