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SubjectRe: [PATCH v12 00/17] Introduce the Counter character device interface

On 7/5/21 11:18 AM, William Breathitt Gray wrote:
> To summarize the main points of this patchset: there are no changes to
> the existing Counter sysfs userspace interface; a Counter character
> device interface is introduced that allows Counter events and associated
> data to be read() by userspace; the events_configure() and
> watch_validate() driver callbacks are introduced to support Counter
> events; and IRQ support is added to the 104-QUAD-8 driver, serving as an
> example of how to support the new Counter events functionality.
I quickly tested this set on top of linux-next next-20210706 and didn't
see any issue with intel-qep.c. However I noticed two mutex issues in
patch 15/17. Perhaps visible due the CONFIG_DEBUG_MUTEXES=y etc. I have on.

I'll be out of office next few weeks so cannot test if you have a new
version meanwhile but wanted to share no show stopper from intel-qep.c
and those two mutex warnings.


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