Messages in this thread | | | Date | Mon, 13 Nov 2017 15:11:45 +0100 (CET) | From | Thomas Gleixner <> | Subject | Re: lockdep annotation for desc->request_mutex |
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Andrew,
On Thu, 9 Nov 2017, Andrew Lunn wrote:
> Hi Thomas > > I'm been given reports of a new lockdep splat while testing > 4.14-rc8. It appears to be a false positive, due to missing lockdep > annotation on desc->request_mutex. The driver is using two different > interrupt descriptors via different paths. But without annotation, > lockdep thinks it is the same mutex.
Hmm.
> Do you have patches adding a lockdep class for desc->request_mutex?
No. I think we should extend irq_set_lockdep_class() and hand in two keys then.
Thanks,
tglx
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