staging: vt6656: sparse fixes: iwctl_siwgenie use memcpy.
authorMalcolm Priestley <tvboxspy@gmail.com>
Mon, 13 Jan 2014 16:23:30 +0000 (16:23 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 13 Jan 2014 23:46:19 +0000 (15:46 -0800)
commit9010a286d9857fccfac69e5e8bdf9b74ea1f7c0e
treecabc0dfdf88d681f03952ad30b6b5e462fbe34f0
parent86a362f16079d435a08d27f92ac2bee4e12856f1
staging: vt6656: sparse fixes: iwctl_siwgenie use memcpy.

extra is in kernel space replace copy_from_user with
memcpy with no need to error check.

We already know that extra is valid by error checking
on wrq->length.

sparse warning
iwctl.c:1567:53: warning: incorrect type in argument 2 (different address spaces)
iwctl.c:1567:53:    expected void const [noderef] <asn:1>*from
iwctl.c:1567:53:    got char *extra

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/vt6656/iwctl.c