diff options
| author | Julia Lawall <julia@diku.dk> | 2008-03-27 01:48:22 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2008-03-27 01:48:22 -0400 |
| commit | 1192aeb957402b45f311895f124e4ca41206843c (patch) | |
| tree | 877e5ac536ba87cdfe441c95c49e04f7bc8c63a4 /Documentation/fb/sa1100fb.txt | |
| parent | 86d9fc1293aa9456677eab94e9fd2d3a10920548 (diff) | |
ACPI: drivers/acpi: elide a non-zero test on a result that is never 0
The function thermal_cooling_device_register always returns either a valid
pointer or a value made with ERR_PTR, so a test for non-zero on the result
will always succeed.
The problem was found using the following semantic match.
(http://www.emn.fr/x-info/coccinelle/)
//<smpl>
@a@
expression E, E1;
statement S,S1;
position p;
@@
E = thermal_cooling_device_register(...)
... when != E = E1
if@p (E) S else S1
@n@
position a.p;
expression E,E1;
statement S,S1;
@@
E = NULL
... when != E = E1
if@p (E) S else S1
@depends on !n@
expression E;
statement S,S1;
position a.p;
@@
* if@p (E)
S else S1
//</smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'Documentation/fb/sa1100fb.txt')
0 files changed, 0 insertions, 0 deletions