drm/i915: Fix PSF GV point mask when SAGV is not possible
authorVille Syrjälä <ville.syrjala@linux.intel.com>
Wed, 9 Mar 2022 16:49:46 +0000 (18:49 +0200)
committerVille Syrjälä <ville.syrjala@linux.intel.com>
Fri, 18 Mar 2022 20:38:27 +0000 (22:38 +0200)
commit0fed4ddd18f064d2359b430c6e83ee60dd1f49b1
tree385c76c16956dab7c03f388e2d13f0b07d12b5fc
parent4593e8e064353c4db3c1ad0f774d389af33d31c5
drm/i915: Fix PSF GV point mask when SAGV is not possible

Don't just mask off all the PSF GV points when SAGV gets disabled.
This should in fact cause the Pcode to reject the request since
at least one PSF point must remain enabled at all times.

Cc: stable@vger.kernel.org
Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Fixes: 192fbfb76744 ("drm/i915: Implement PSF GV point support")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220309164948.10671-7-ville.syrjala@linux.intel.com
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
drivers/gpu/drm/i915/display/intel_bw.c