From: Jiayi Ye <yejiayily@gmail.com>
Date: Mon, 20 Oct 2014 07:01:08 +0000 (+0800)
Subject: staging: rts5208: fix case of bitwise operator on zero in ms.c
X-Git-Tag: omap-for-v3.19/fixes-rc1~73^2~1037
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b0ef3ed48eb8c1982c9d8b8063d856c83d116764;p=pandora-kernel.git

staging: rts5208: fix case of bitwise operator on zero in ms.c

If a variable has value 0, then there is no point in combining it with other things with |, as for any
 x, 0 | x is just x. The following semantic patch finds this problem.
    @@
    expression x,e,e1;
    statement S;
    @@

    if (x == 0) {
      <... when != x = e1
          when != while(...) S
          when != for(...;...;...) S
    (
    *  x |= e
    |
    *  x | e
    )
      ...>
    }

Signed-off-by: Jiayi Ye <yejiayily@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

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