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drm/i915: re-disable RC6p on Sandy Bridge

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commit 67b0b4ed259e425b7eed09da75b42c80682ca003 upstream.

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

Disabled originally in commit 1c8ecf80fd ("drm/i915: do not enable
RC6p on Sandy Bridge").

Signed-off-by: Sasa Dragic <sasa.dragic@gmail.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221219172927.9603-2-sasa.dragic@gmail.com
Fixes: fb6db0f5bf ("drm/i915: Remove unsafe i915.enable_rc6")
Fixes: 13c5a577b342 ("drm/i915/gt: Select the deepest available parking mode for rc6")
Cc: stable@vger.kernel.org
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
(cherry picked from commit 0c8a6e9ea232c221976a0670256bd861408d9917)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sasa Dragic 2022-12-19 18:29:27 +01:00 committed by Greg Kroah-Hartman
parent ffef77794f
commit 39e0844a1e
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/i915/i915_pci.c
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@ -418,7 +418,8 @@ static const struct intel_device_info intel_sandybridge_m_gt2_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, \
.ppgtt_type = INTEL_PPGTT_FULL, \
.ppgtt_size = 31, \