diff options
author | Julia Lawall <julia@diku.dk> | 2008-12-21 16:41:36 +0100 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-03-24 16:20:28 -0700 |
commit | 00185a60c37549531b9eee562d3eba19020875d5 (patch) | |
tree | 1828b245fc183008f8e48838fdf0025ac11ffda0 /drivers/usb/core | |
parent | db5e6df172309c382982790aafa8cd87dc0b6292 (diff) |
USB: Remove redundant test in pxa27x_udc and ftdi_sio
priv is checked not to be NULL near the beginning of the function and not
changed subsequently, making the test redundant.
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: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/core')
0 files changed, 0 insertions, 0 deletions