--- drivers/gpu/drm/i915/i915_drv.c

+++ drivers/gpu/drm/i915/i915_drv.c

@@ -192,6 +192,7 @@ int i965_reset(struct drm_device *dev, u

}

} else {

DRM_ERROR("Error occurred. Don't know how to reset this chip.\n");

+ mutex_unlock(&dev->struct_mutex);

return -ENODEV;

}