drivers/net/hamradio: Eliminate a NULL pointer dereference
authorJulia Lawall <julia@diku.dk>
Thu, 27 May 2010 23:29:05 +0000 (16:29 -0700)
committerDavid S. Miller <davem@davemloft.net>
Fri, 28 May 2010 08:57:18 +0000 (01:57 -0700)
commit89dc0be68f4aaa06dba1b5d6ea9ecfe8fa9b7bf0
treeaededffd13259b3d9b76a423fd98b811327e9597
parent84e5b9f75b48fe4a1e4ee72698230701439d0805
drivers/net/hamradio: Eliminate a NULL pointer dereference

At the point of the print, dev is NULL.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@r exists@
expression E,E1;
identifier f;
statement S1,S2,S3;
@@

if ((E == NULL && ...) || ...)
{
  ... when != if (...) S1 else S2
      when != E = E1
* E->f
  ... when any
  return ...;
}
else S3
// </smpl>

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