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author | Julia Lawall <julia@diku.dk> | 2008-12-21 18:39:37 +0300 |
---|---|---|
committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-01-07 22:13:22 +0300 |
commit | b8d9cb2a2226118fd71f657c80b06b670a653022 (patch) | |
tree | 1f5d4874dfe51ce70203ae8415fa2c2413298e4a /Documentation/PCI | |
parent | 322162a71bd9fc4edb1b11236e7bc8aa27ccac22 (diff) | |
download | linux-b8d9cb2a2226118fd71f657c80b06b670a653022.tar.xz |
PCI hotplug: remove redundant test in cpq hotplug
func is checked not to be NULL a few lines before.
A simplified version of the semantic patch that makes this change is as
follows: (http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@r exists@
local idexpression x;
expression E;
position p1,p2;
@@
if (x@p1 == NULL || ...) { ... when forall
return ...; }
... when != \(x=E\|x--\|x++\|--x\|++x\|x-=E\|x+=E\|x|=E\|x&=E\|&x\)
(
x@p2 == NULL
|
x@p2 != NULL
)
// another path to the test that is not through p1?
@s exists@
local idexpression r.x;
position r.p1,r.p2;
@@
... when != x@p1
(
x@p2 == NULL
|
x@p2 != NULL
)
@fix depends on !s@
position r.p1,r.p2;
expression x,E;
statement S1,S2;
@@
(
- if ((x@p2 != NULL) || ...)
S1
|
- if ((x@p2 == NULL) && ...) S1
|
- BUG_ON(x@p2 == NULL);
)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'Documentation/PCI')
0 files changed, 0 insertions, 0 deletions