tree 4d38160ab42c14fa65ca356ada2b792447b0cc3b
parent 2f272e7b015c6d0f308d1a03e71557c962b10ce9
author Julia Lawall <Julia.Lawall@lip6.fr> 1428159569 +0200
committer Stephen Boyd <sboyd@codeaurora.org> 1428592771 -0700

clk: versatile: test returned value

Put NULL test on the result of the previous call instead on one of its
arguments.  A simplified version of the semantic match that finds this
problem is as follows (http://coccinelle.lip6.fr/):

// <smpl>
r@
expression *e1;
expression *e2;
identifier f;
statement S1,S2;
@@

e1 = f(...,e2,...);
(
if (e1 == NULL || ...) S1 else S2
|
*if (e2 == NULL || ...) S1 else S2
)
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>