drm/i915/icl: Drop spurious register read from icl_dbuf_slices_update

[linux-2.6-microblaze.git] / drivers / gpu / drm / i915 / intel_runtime_pm.c

diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index f945db6..770de26 100644 (file)
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -3236,8 +3236,7 @@ static u8 intel_dbuf_max_slices(struct drm_i915_private *dev_priv)
 void icl_dbuf_slices_update(struct drm_i915_private *dev_priv,
                            u8 req_slices)
 {
-       u8 hw_enabled_slices = dev_priv->wm.skl_hw.ddb.enabled_slices;
-       u32 val;
+       const u8 hw_enabled_slices = dev_priv->wm.skl_hw.ddb.enabled_slices;
        bool ret;
 
        if (req_slices > intel_dbuf_max_slices(dev_priv)) {
@@ -3248,7 +3247,6 @@ void icl_dbuf_slices_update(struct drm_i915_private *dev_priv,
        if (req_slices == hw_enabled_slices || req_slices == 0)
                return;
 
-       val = I915_READ(DBUF_CTL_S2);
        if (req_slices > hw_enabled_slices)
                ret = intel_dbuf_slice_set(dev_priv, DBUF_CTL_S2, true);
        else