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| author | Julia Lawall <julia@diku.dk> | 2009-07-19 17:26:13 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2009-07-20 00:03:35 +0200 |
| commit | 76c317d6e5cb7f58541879006d39774596962715 (patch) | |
| tree | c92ad2c0b1e4b849d99bf6c97df87b637f1fd4f6 /drivers/hid/hid-core.c | |
| parent | 4859484b0957ddc7fe3e0fa349d98b0f1c7876bd (diff) | |
| download | lwn-76c317d6e5cb7f58541879006d39774596962715.tar.gz lwn-76c317d6e5cb7f58541879006d39774596962715.zip | |
HID: Move dereferences below a NULL test
If the NULL test is necessary, then the dereferences should be moved below
the NULL test.
The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@@
type T;
expression E,E1;
identifier i,fld;
statement S;
@@
- T i = E->fld;
+ T i;
... when != E=E1
when != i
if (E == NULL||...) S
+ i = E->fld;
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-core.c')
| -rw-r--r-- | drivers/hid/hid-core.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index f2c21d5d24e8..5eb10c2ce665 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -1075,14 +1075,16 @@ EXPORT_SYMBOL_GPL(hid_report_raw_event); */ int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt) { - struct hid_report_enum *report_enum = hid->report_enum + type; - struct hid_driver *hdrv = hid->driver; + struct hid_report_enum *report_enum; + struct hid_driver *hdrv; struct hid_report *report; unsigned int i; int ret; if (!hid || !hid->driver) return -ENODEV; + report_enum = hid->report_enum + type; + hdrv = hid->driver; if (!size) { dbg_hid("empty report\n"); |