Since v9ses->uid is unsigned, it would seem better to use simple_strtoul that
simple_strtol.
A simplified version of the semantic patch that makes this change is as
follows: (http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@r2@
long e;
position p;
@@
e = simple_strtol@p(...)
@@
position p != r2.p;
type T;
T e;
@@
e =
- simple_strtol@p
+ simple_strtoul
  (...)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Eric Van Hensbergen <ericvh@gmail.com>
                                v9ses->flags |= V9FS_ACCESS_ANY;
                        else {
                                v9ses->flags |= V9FS_ACCESS_SINGLE;
-                               v9ses->uid = simple_strtol(s, &e, 10);
+                               v9ses->uid = simple_strtoul(s, &e, 10);
                                if (*e != '\0')
                                        v9ses->uid = ~0;
                        }