Re: Build error with latest kernel

[Dave Airlie <airlied@xxxxxxxx>]

> > 
> > There is a build error with the attached config on the latest upstream
> > Linus kernel.
> > 
> >   CC [M]  drivers/gpu/drm/i915/i915_suspend.o
> > drivers/gpu/drm/i915/i915_opregion.c: In function ‘intel_opregion_init’:
> > drivers/gpu/drm/i915/i915_opregion.c:340: error: implicit declaration of
> > function ‘register_acpi_notifier’
> > drivers/gpu/drm/i915/i915_opregion.c: In function ‘intel_opregion_free’:
> > drivers/gpu/drm/i915/i915_opregion.c:361: error: implicit declaration of
> > function ‘unregister_acpi_notifier’
> > make[4]: *** [drivers/gpu/drm/i915/i915_opregion.o] Error 1
> > make[4]: *** Waiting for unfinished jobs....
> > 
> > Looks like the symbols are not defined when ACPI is not configured.
> > 
> Yes, you're right.
> IGD OpeRegion depends on ACPI.
> I think we need to introduce a new kernel config option for
> IGD OpRegion support.
> 
> cc matthew.

The fix is queued for Linus already.

Dave.