From: Julia Lawall <ju...@diku.dk>

If the NULL test is necessary, then the dereference should be moved below
the NULL test.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
type T;
expression E;
identifier i,fld;
statement S;
@@

- T i = E->fld;
+ T i;
  ... when != E
      when != i
  if (E == NULL) S
+ i = E->fld;
// </smpl>

Signed-off-by: Julia Lawall <ju...@diku.dk>

---
 drivers/gpu/drm/drm_stub.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff -u -p a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c
--- a/drivers/gpu/drm/drm_stub.c
+++ b/drivers/gpu/drm/drm_stub.c
@@ -489,7 +489,7 @@ int drm_put_minor(struct drm_minor **min
  */
 void drm_put_dev(struct drm_device *dev)
 {
-       struct drm_driver *driver = dev->driver;
+       struct drm_driver *driver;
        struct drm_map_list *r_list, *list_temp;
 
        DRM_DEBUG("\n");
@@ -498,6 +498,7 @@ void drm_put_dev(struct drm_device *dev)
                DRM_ERROR("cleanup called no dev\n");
                return;
        }
+       driver = dev->driver;
 
        drm_vblank_cleanup(dev);
 

------------------------------------------------------------------------------
Enter the BlackBerry Developer Challenge  
This is your chance to win up to $100,000 in prizes! For a limited time, 
vendors submitting new applications to BlackBerry App World(TM) will have
the opportunity to enter the BlackBerry Developer Challenge. See full prize  
details at: http://p.sf.net/sfu/Challenge
--
_______________________________________________
Dri-devel mailing list
Dri-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/dri-devel

Reply via email to