On 03/22/2017 01:01 PM, Steven Rostedt wrote:
On Wed, 22 Mar 2017 12:37:59 -0500
Julia Cartwright <julia@xxxxxx> wrote:
Which kernel were you testing on, here? From what I can tell, this
should have been fixed with Thomas's commit:
2a1d3ab8986d ("genirq: Handle force threading of irqs with primary
and thread handler")
Thanks Julia for looking into this. I just looked at the code, and saw
that it does very little with the lock held, and was fine with the
conversion. But if that interrupt handler should be in a thread, we
should see if that's the issue first.
It will not be threaded because there are IRQF_ONESHOT used.
ret = devm_request_threaded_irq(&pdev->dev, irq,
sti_mbox_irq_handler,
sti_mbox_thread_handler,
IRQF_ONESHOT, mdev->name, mdev);
Which landed in 4.4. It forces the primary handler to be threaded as
well.
Lionel,
Can you check if this is an issue with 4.4 too?
--
regards,
-grygorii
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