drm/i915: Simplify intel_sanitize_enable_ppgtt

Remove dead code around has_aliasing_ppgtt condition.

Suggested-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20171010143355.16577-1-joonas.lahtinen@linux.intel.com

diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index ca7fd34..daba55a 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -135,11 +135,12 @@ static inline void i915_ggtt_invalidate(struct drm_i915_private *i915)
 int intel_sanitize_enable_ppgtt(struct drm_i915_private *dev_priv,
                                int enable_ppgtt)
 {
-       bool has_aliasing_ppgtt;
        bool has_full_ppgtt;
        bool has_full_48bit_ppgtt;
 
-       has_aliasing_ppgtt = dev_priv->info.has_aliasing_ppgtt;
+       if (!dev_priv->info.has_aliasing_ppgtt)
+               return 0;
+
        has_full_ppgtt = dev_priv->info.has_full_ppgtt;
        has_full_48bit_ppgtt = dev_priv->info.has_full_48bit_ppgtt;
 
@@ -149,9 +150,6 @@ int intel_sanitize_enable_ppgtt(struct drm_i915_private *dev_priv,
                has_full_48bit_ppgtt = intel_vgpu_has_full_48bit_ppgtt(dev_priv);
        }
 
-       if (!has_aliasing_ppgtt)
-               return 0;
-
        /*
         * We don't allow disabling PPGTT for gen9+ as it's a requirement for
         * execlists, the sole mechanism available to submit work.
@@ -188,7 +186,7 @@ int intel_sanitize_enable_ppgtt(struct drm_i915_private *dev_priv,
                        return 2;
        }
 
-       return has_aliasing_ppgtt ? 1 : 0;
+       return 1;
 }
 
 static int ppgtt_bind_vma(struct i915_vma *vma,