Merge tag 'drm-intel-next-2014-12-19' of git://anongit.freedesktop.org/drm-intel...

[cascardo/linux.git] / drivers / gpu / drm / i915 / i915_suspend.c

diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index 1e4999d..9f19ed3 100644 (file)
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -303,6 +303,10 @@ int i915_save_state(struct drm_device *dev)
                }
        }
 
+       if (IS_GEN4(dev))
+               pci_read_config_word(dev->pdev, GCDGMBUS,
+                                    &dev_priv->regfile.saveGCDGMBUS);
+
        /* Cache mode state */
        if (INTEL_INFO(dev)->gen < 7)
                dev_priv->regfile.saveCACHE_MODE_0 = I915_READ(CACHE_MODE_0);
@@ -331,6 +335,10 @@ int i915_restore_state(struct drm_device *dev)
        mutex_lock(&dev->struct_mutex);
 
        i915_gem_restore_fences(dev);
+
+       if (IS_GEN4(dev))
+               pci_write_config_word(dev->pdev, GCDGMBUS,
+                                     dev_priv->regfile.saveGCDGMBUS);
        i915_restore_display(dev);
 
        if (!drm_core_check_feature(dev, DRIVER_MODESET)) {