Re: [PATCH v8 3/3] leds/powernv: Add driver for PowerNV platform

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Vasant,

On 28.07.2015 15:40, Vasant Hegde wrote:
On 07/27/2015 03:20 PM, Jacek Anaszewski wrote:
Hi Vasant,

On 27.07.2015 05:41, Vasant Hegde wrote:
On 07/27/2015 03:11 AM, Jacek Anaszewski wrote:
Hi Vasant,


Hi Jacek,

Two trivial details left. Please find them below.

Thanks for the review/Ack. I'll fix below issues and resend patchset.

I will ask Benh/Michael to take this patchset. But this patchset is depending
on your core changes. Can you confirm that you are pushing that patchset in next
merge window?

Jacek,


Without my core changes your driver won't work with led triggers, but
AFAIR this use case is not relevant for your LEDs? Eventually, we could
produce a patch set adding support for LED triggers if it will be clear
that LED core changes will not be merged in the upcoming merge window.

IIUC current LED code doesn't allow me to sleep (without driver specific
workqueue). And powernv_led_set() call will sleep. Hence I think it won't work.

I did a quick test without your patch. It doesn't seems to be working.

Strange, it should work when led_set_brightness is called from non
atomic context, e.g. from sysfs interface. Could you share your test
scenario and describe the symptoms?

Alternatively we can revert the changes (add driver specific workqueue now) and
later when your changes goes to upstream, I can fix my code.

You can add this as an incremental patch which would be easy
to revert when LED core changes are merged.

--
Best Regards,
Jacek Anaszewski
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