1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/gpu/drm/gma500/oaktrail_lvds.c b/drivers/gpu/drm/gma500/oaktrail_lvds.c
index 5e0697862736..9b099468a5db 100644
--- a/drivers/gpu/drm/gma500/oaktrail_lvds.c
+++ b/drivers/gpu/drm/gma500/oaktrail_lvds.c
@@ -359,6 +359,7 @@ void oaktrail_lvds_init(struct drm_device *dev,
          *    if closed, act like it's not there for now
          */
 
+        mutex_lock(&dev->mode_config.mutex);
         i2c_adap = i2c_get_adapter(dev_priv->ops->i2c_bus);
         if (i2c_adap == NULL)
                 dev_err(dev->dev, "No ddc adapter available!\n");
@@ -401,10 +402,14 @@ void oaktrail_lvds_init(struct drm_device *dev,
         }
 
 out:
+        mutex_unlock(&dev->mode_config.mutex);
+
         drm_sysfs_connector_add(connector);
         return;
 
 failed_find:
+        mutex_unlock(&dev->mode_config.mutex);
+
         dev_dbg(dev->dev, "No LVDS modes found, disabling.\n");
         if (gma_encoder->ddc_bus)
                 psb_intel_i2c_destroy(gma_encoder->ddc_bus);