drm/cma-helper: fixup compilation

/me grabs a few brown paper bags

So it looks like I've broken compilation in

commit 6aed8ec3f76a22217c9ae183d32b1aa990bed069
Author: Daniel Vetter <[email protected]>
Date:   Sun Jan 20 17:32:21 2013 +0100

    drm: review locking for drm_fb_helper_restore_fbdev_mode

Fix it up again.

Reported-by: Wu Fengguang <[email protected]>
Signed-off-by: Daniel Vetter <[email protected]>

diff --git a/drivers/gpu/drm/drm_fb_cma_helper.c b/drivers/gpu/drm/drm_fb_cma_helper.c
index e851658f87d54292f1d3da456d9b648b02e142c8..ef68e34b16ec4785c2e522065935d9edbe638606 100644 (file)
--- a/drivers/gpu/drm/drm_fb_cma_helper.c
+++ b/drivers/gpu/drm/drm_fb_cma_helper.c
@@ -377,6 +377,8 @@ EXPORT_SYMBOL_GPL(drm_fbdev_cma_fini);
  */
 void drm_fbdev_cma_restore_mode(struct drm_fbdev_cma *fbdev_cma)
 {
+       struct drm_device *dev = fbdev_cma->fb_helper.dev;
+
        drm_modeset_lock_all(dev);
        if (fbdev_cma)
                drm_fb_helper_restore_fbdev_mode(&fbdev_cma->fb_helper);