tree 4e98fbe0298e523231fa6b7d470d640d364aa712
parent d187abb9a83e6c6b6e9f2ca17962bdeafb4bc903
author Julia Lawall <julia@diku.dk> 1281521448 +0200
committer Greg Kroah-Hartman <gregkh@suse.de> 1282621816 -0700

USB: gadget: Return -ENOMEM on memory allocation failure

In this code, 0 is returned on memory allocation failure, even though other
failures return -ENOMEM or other similar values.

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

// <smpl>
@@
expression ret;
expression x,e1,e2,e3;
@@

ret = 0
... when != ret = e1
*x = \(kmalloc\|kcalloc\|kzalloc\)(...)
... when != ret = e2
if (x == NULL) { ... when != ret = e3
  return ret;
}
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>