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| author | Julia Lawall <julia@diku.dk> | 2010-05-15 23:19:30 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2010-05-17 10:25:41 +0200 |
| commit | 1721a238ba5df9e870ed952464d38714261f5be9 (patch) | |
| tree | 36bc6f27e860d5c6ecad14b9a3cde1ce1cb0094c | |
| parent | 81cd584394e54514c57b18e0f23e0b5ca40070b2 (diff) | |
| download | lwn-1721a238ba5df9e870ed952464d38714261f5be9.tar.gz lwn-1721a238ba5df9e870ed952464d38714261f5be9.zip | |
HID: Use kmemdup
Use kmemdup when some other buffer is immediately copied into the
allocated region.
A simplified version of the semantic patch that makes this change is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
expression from,to,size,flag;
statement S;
@@
- to = \(kmalloc\|kzalloc\)(size,flag);
+ to = kmemdup(from,size,flag);
if (to==NULL || ...) S
- memcpy(to, from, size);
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| -rw-r--r-- | drivers/hid/hid-core.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index b9f99f9c4b2f..c9eb2d08f396 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -653,10 +653,9 @@ int hid_parse_report(struct hid_device *device, __u8 *start, if (device->driver->report_fixup) device->driver->report_fixup(device, start, size); - device->rdesc = kmalloc(size, GFP_KERNEL); + device->rdesc = kmemdup(start, size, GFP_KERNEL); if (device->rdesc == NULL) return -ENOMEM; - memcpy(device->rdesc, start, size); device->rsize = size; parser = vmalloc(sizeof(struct hid_parser)); |