Re: [PATCH] acpi/video: Add Lenovo IdeaPad Yoga 13 to acpi videodetect blacklist

From: Matthew Garrett
Date: Mon Oct 14 2013 - 11:48:38 EST


On Mon, 2013-10-14 at 17:36 +0200, Lennart Poettering wrote:

> Sorry, still not getting this. How should this ever work if the intel
> video driver is compiled as kmod? That means that it isn't clear at all
> when the kmod is going to be loaded or if it is loaded at all, you
> cannot delay the registration of the acpi backlight that long, since the
> time you'd have to wait is basically unbounded...

See the intel_opregion_present() code in drivers/acpi/video.c. The ACPI
driver won't bind to Intel hardware until i915 indicates that it should
do so.

--
Matthew Garrett <matthew.garrett@xxxxxxxxxx>
¢éì®&Þ~º&¶¬–+-±éÝ¥Šw®žË±Êâmébžìdz¹Þ)í…æèw*jg¬±¨¶‰šŽŠÝj/êäz¹ÞŠà2ŠÞ¨è­Ú&¢)ß«a¶Úþø®G«éh®æj:+v‰¨Šwè†Ù>Wš±êÞiÛaxPjØm¶Ÿÿà -»+ƒùdš_