Re: [PATCH 2/3] acpi_video: Intel video is not always i915

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On Wed, Apr 25, 2012 at 01:24:38PM +0100, Alan Cox wrote:

> Because as I said before there are two drivers involved and you may only
> have one compiled into your kernel. If you have
> 
> CONFIG_DRM_GMA500=y
> CONFIG_DRM_I915=n
> 
> you want the acpi stuff to autoregister even if an i915 is found, but not
> if a GMA500 is found. Ditto the reverse.

No you don't - there's various platforms that will hang if you do that. 
It's necessary to make sure that the DIDL fields are set up before 
calling any ACPI video functions on opregion hardware.

-- 
Matthew Garrett | mjg59@xxxxxxxxxxxxx
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