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    Subject[PATCH 3.17 109/122] drm/i915: drop WaSetupGtModeTdRowDispatch:snb
    Date
    3.17-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Daniel Vetter <daniel.vetter@ffwll.ch>

    commit 2208d655a91f9879bd9a39ff9df05dd668b3512c upstream.

    This reverts the regressing

    commit 6547fbdbfff62c99e4f7b4f985ff8b3454f33b0f
    Author: Daniel Vetter <daniel.vetter@ffwll.ch>
    Date: Fri Dec 14 23:38:29 2012 +0100

    drm/i915: Implement WaSetupGtModeTdRowDispatch

    that causes GPU hangs immediately on boot.

    Reported-by: Leo Wolf <jclw@ymail.com>
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=79996
    Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
    [Jani: amended the commit message slightly.]
    Signed-off-by: Jani Nikula <jani.nikula@intel.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/gpu/drm/i915/intel_pm.c | 5 -----
    1 file changed, 5 deletions(-)

    --- a/drivers/gpu/drm/i915/intel_pm.c
    +++ b/drivers/gpu/drm/i915/intel_pm.c
    @@ -5247,11 +5247,6 @@ static void gen6_init_clock_gating(struc
    I915_WRITE(_3D_CHICKEN,
    _MASKED_BIT_ENABLE(_3D_CHICKEN_HIZ_PLANE_DISABLE_MSAA_4X_SNB));

    - /* WaSetupGtModeTdRowDispatch:snb */
    - if (IS_SNB_GT1(dev))
    - I915_WRITE(GEN6_GT_MODE,
    - _MASKED_BIT_ENABLE(GEN6_TD_FOUR_ROW_DISPATCH_DISABLE));
    -
    /* WaDisable_RenderCache_OperationalFlush:snb */
    I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE));




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