From: Ville Syrj?l? <ville.syrjala at linux.intel.com> I can't find GEN6_RP_INTERRUPT_LIMITS (0xA014) anywhere in VLV docs. Reading it always returns zero from what I can tell, and eliminating it doesn't seem to make any difference to the behaviour of the system. Signed-off-by: Ville Syrj?l? <ville.syrjala at linux.intel.com> --- drivers/gpu/drm/i915/intel_pm.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 8b7475e..96cfb3e 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3107,7 +3107,8 @@ static void vlv_update_rps_cur_delay(struct drm_i915_private *dev_priv) void valleyview_set_rps(struct drm_device *dev, u8 val) { struct drm_i915_private *dev_priv = dev->dev_private; - u32 limits = gen6_rps_limits(dev_priv, &val); + + gen6_rps_limits(dev_priv, &val); WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); WARN_ON(val > dev_priv->rps.max_delay); @@ -3126,11 +3127,6 @@ void valleyview_set_rps(struct drm_device *dev, u8 val) vlv_punit_write(dev_priv, PUNIT_REG_GPU_FREQ_REQ, val); - /* Make sure we continue to get interrupts - * until we hit the minimum or maximum frequencies. - */ - I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, limits); - dev_priv->rps.cur_delay = val; trace_intel_gpu_freq_change(vlv_gpu_freq(dev_priv->mem_freq, val)); -- 1.8.1.5