[PATCH] drm/i915: disable RC6p on Sandy Bridge

[Sasa Dragic]

RC6p on Sandy Bridge got re-enabled over time, causing visual glitches
and GPU crashes.

Disabled originally in commit 1c8ecf80fdee ("drm/i915: do not enable
RC6p on Sandy Bridge").

Signed-off-by: Sasa Dragic <sasa.dragic at gmail.com>
---
 drivers/gpu/drm/i915/i915_pci.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c
index 3f803c1280c0..fcd9a04e33ff 100644
--- a/drivers/gpu/drm/i915/i915_pci.c
+++ b/drivers/gpu/drm/i915/i915_pci.c
@@ -423,7 +423,8 @@ static const struct intel_device_info ilk_m_info = {
  .has_coherent_ggtt = true, \
  .has_llc = 1, \
  .has_rc6 = 1, \
- .has_rc6p = 1, \
+ /* sna does support rc6p, but enabling it causes various issues */ \
+ .has_rc6p = 0, \
  .has_rps = true, \
  .dma_mask_size = 40, \
  .__runtime.ppgtt_type = INTEL_PPGTT_ALIASING, \
-- 
2.37.2