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author | Julia Lawall <Julia.Lawall@lip6.fr> | 2013-01-21 14:02:46 +0100 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-21 13:15:31 -0800 |
commit | 5c6e9bf011bca072648017477b0fe36402be1415 (patch) | |
tree | d185f3c6d26559d40600fc1e6cf711171cee26c6 /drivers/usb/core/hcd.c | |
parent | f4cc1834bdc47d0574ceffb728f256f67e1190ef (diff) |
drivers/usb/chipidea/core.c: adjust duplicate test
Delete successive tests to the same location. In this case res has already
been tested for being NULL, and calling devm_request_and_ioremap will not
make it NULL. On the other hand, devm_request_and_ioremap can return NULL
on failure.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@s exists@
local idexpression y;
expression x,e;
@@
*if ( \(x == NULL\|IS_ERR(x)\|y != 0\) )
{ ... when forall
return ...; }
... when != \(y = e\|y += e\|y -= e\|y |= e\|y &= e\|y++\|y--\|&y\)
when != \(XT_GETPAGE(...,y)\|WMI_CMD_BUF(...)\)
*if ( \(x == NULL\|IS_ERR(x)\|y != 0\) )
{ ... when forall
return ...; }
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/core/hcd.c')
0 files changed, 0 insertions, 0 deletions