[PATCH 0/3] Use acpi_video_unregister_backlight instead of acpi_video_unregister in platfrom backlight drivers

Hans de Goede hdegoede at redhat.com
Mon Jun 1 10:58:17 PDT 2015

Hi Darren,

On 01-06-15 19:41, Darren Hart wrote:
> On Mon, Jun 01, 2015 at 11:25:05AM +0200, Hans de Goede wrote:
>> Hi All,
>> I'm working on cleaning up the currently somewhat convoluted logic to
>> select which backlight interfaces to register on x86 systems, see:
>> http://lists.freedesktop.org/archives/dri-devel/2014-December/074687.html
>> For a rought outline (details will change in the actual patch-set).
>> These 3 patches are a preparation for that work, as the behavior of the
>> current code is not always consistent (it changes depending on module
>> loading order in some cases). These 3 patches remove this inconsistency
>> which in some cases may result in a behavior change.
>> This way the cleanup can have a consistent base to build upon, and I can
>> ensure that the cleanup itself does not cause any functional changes.
>> I hope to post a v1 of the actual cleanup patch-set in 1-2 weeks.
> That will likely mean we miss the 4.2 merge window and will target this for 4.3
> (which is fine by me, but just so you know).

IMHO this patches are worthwhile to have by themselves, as said
they fix various inconsistencies, which is a good thing to fix

I think that these going into 4.2, and the cleanup which depends on them
(but is other then that pretty much an orthogonal patch set) going into
4.3 is actually a good thing, because if people then experience any
problems due to my work on this, we can easily see if it is due to
the behavior change these 3 patches may introduce in some cases, or
if it is due to the actual cleanup causing a behavior change (which it
should not).



More information about the dri-devel mailing list