tree 2eb8f149857dc0d52551532b8ebe4f8c8a7db7d3
parent 0aa3f139cd5123ffb8f397b91d777635e9761c24
author Julia Lawall <julia@diku.dk> 1274963839 +0200
committer Greg Kroah-Hartman <gregkh@suse.de> 1275683937 -0700

Staging: Eliminate a NULL pointer dereference

Eliminate a NULL or near NULL pointer dereference.

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: Greg Kroah-Hartman <gregkh@suse.de>