staging: line6: add bounds check in snd_toneport_source_put()
staging: line6: add bounds check in snd_toneport_source_put()

"source" comes from the user in snd_ctl_elem_write() so it needs to be
checked.

Signed-off-by: Dan Carpenter <ff341aa343d564f9e53e9dcb6996be8c04859a66@oracle.com>
Reviewed-by: Stefan Hajnoczi <484520986196e4a799496429ce8a499eb6488adb@gmail.com>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs