commit 64aebe73152ab3a9f5f426baaf65db632bd72c13
author Julia Lawall <julia@diku.dk> Sun Jul 19 17:29:57 2009 +0200
committer Greg Kroah-Hartman <gregkh@suse.de> Wed Sep 23 06:46:29 2009 -0700
tree b96e307aed23b98bd83c1096da8619e0d042849d
parent 981e60f037631ca725a9790e7b3512de4a60bba8

USB: storage: Drop an unneeded a NULL test

In each case, the NULL test is not necessary because the function is static
and at the only places where it is called, the us argument has already been
dereferenced.

The semantic patch that finds the problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
type T;
expression E,E1;
identifier i,fld;
statement S;
@@

- T i = E->fld;
+ T i;
  ... when != E=E1
      when != i
  if (E == NULL||...) S
+ i = E->fld;
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: Matthew Dharm <mdharm-usb@one-eyed-alien.net>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>