Re: [PATCH 3/6] drm/i915: untie opregion init and asle irq/pipestat enable

[Damien Lespiau <damien.lespiau@intel.com>]

On Mon, Apr 29, 2013 at 01:02:52PM +0300, Jani Nikula wrote:
> Stop calling intel_opregion_enable_asle() and consequently
> intel_enable_asle() on opregion init. It should not be necessary for
> these reasons:
> 
> 1) On PCH split platforms, it only enables GSE interrupt, which is
>    enabled in irq postinstall anyway. Moreover, the irq enable uses the
>    wrong bit on IVB+.
> 
> 2) On gen 2, it would enable a reserved pipestat bit. If there were gen
>    2 systems with opregion asle support, that is. And the gen 2 irq
>    handler won't handle it anyway.
> 
> 3) On gen 3-4, the irq postinstall will call
>    intel_opregion_enable_asle() to enable the pipestat.
> 
> In short, move the asle irq/pipestat enable responsibility to irq
> postinstall, which already happens to be in place.
> 
> This should not cause any functional changes, but only do the one line
> change here for easier bisectability, just in case, and leave all the
> cleanups this allows to followup patches.
> 
> Signed-off-by: Jani Nikula <jani.nikula@intel.com>

Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>

-- 
Damien