net/9p/trans_virtio.c: Use BUG_ON

if (...) BUG(); should be replaced with BUG_ON(...) when the test has no
side-effects to allow a definition of BUG_ON that drops the code completely.

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

// <smpl>
@ disable unlikely @ expression E,f; @@

(
  if (<... f(...) ...>) { BUG(); }
|
- if (unlikely(E)) { BUG(); }
+ BUG_ON(E);
)

@@ expression E,f; @@

(
  if (<... f(...) ...>) { BUG(); }
|
- if (E) { BUG(); }
+ BUG_ON(E);
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/9p/trans_virtio.c b/net/9p/trans_virtio.c
index 0117b9f..9e3d81c 100644 (file)
--- a/net/9p/trans_virtio.c
+++ b/net/9p/trans_virtio.c
@@ -183,8 +183,7 @@ pack_sg_list(struct scatterlist *sg, int start, int limit, char *data,
                sg_set_buf(&sg[index++], data, s);
                count -= s;
                data += s;
-               if (index > limit)
-                       BUG();
+               BUG_ON(index > limit);
        }
 
        return index-start;