[Bug 85861] backlight control doesn't work on Lenovo t440p after upgrading to 3.17 [bisected]

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=85861

--- Comment #19 from Jani Nikula <jani.nikula at intel.com> ---
(In reply to Tommi Kyntola from comment #18)
> Oops, I referenced the wrong backport reference. I was trying to refer to
> this question in comment #14:
> 
> > Can you check whether the backported commit makes a difference here?

Ah, I meant the same commit from comment #11 that fixes the problem. Does
actual_brightness behave differently wrt brightness with vs. without that
commit?

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