drm/i915: Fix render reclock availability detection.

If the device didn't support EDP, we would bail out too soon.

Signed-off-by: Andy Lutomirski <luto@mit.edu>
[anholt: Pulled this patch out of the patch for adding quirks to
enable reclocking.]
Signed-off-by: Eric Anholt <eric@anholt.net>

diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index 4337414..96cd256 100644 (file)
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -351,20 +351,18 @@ parse_driver_features(struct drm_i915_private *dev_priv,
        struct drm_device *dev = dev_priv->dev;
        struct bdb_driver_features *driver;
 
-       /* set default for chips without eDP */
-       if (!SUPPORTS_EDP(dev)) {
-               dev_priv->edp_support = 0;
-               return;
-       }
-
        driver = find_section(bdb, BDB_DRIVER_FEATURES);
        if (!driver)
                return;
 
-       if (driver->lvds_config == BDB_DRIVER_FEATURE_EDP)
+       if (driver && SUPPORTS_EDP(dev) &&
+           driver->lvds_config == BDB_DRIVER_FEATURE_EDP) {
                dev_priv->edp_support = 1;
+       } else {
+               dev_priv->edp_support = 0;
+       }
 
-       if (driver->dual_frequency)
+       if (driver && driver->dual_frequency)
                dev_priv->render_reclock_avail = true;
 }