On Wed, 25 Apr 2012 13:40:18 +0100 Matthew Garrett <mjg59@xxxxxxxxxxxxx> wrote: > 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. Then the existing driver code is already broken, because it ifdefs out the check if i915 is not compiled for the kernel. Alan -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
