drm/i915: re-disable RC6p on Sandy Bridge

From Sasa Dragic
38a9b17d3b58a3163bc031e96c94fc2d800e02b7 in linux-6.1.y/6.1.8
67b0b4ed259e425b7eed09da75b42c80682ca003 in mainline linux

diff --git a/sys/dev/pci/drm/i915/i915_pci.c b/sys/dev/pci/drm/i915/i915_pci.c
index e7f6e78..6034ef4 100644 (file)
--- a/sys/dev/pci/drm/i915/i915_pci.c
+++ b/sys/dev/pci/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, \
+       /* snb 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, \