tree db1f699e4086edbde592f645a9a10744e7fc10e6
parent 38355e1bb898558141b775e2c4cce8b2372f21b4
author Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1638383702 +0100
committer Karsten Tausche <karsten@fairphone.com> 1654157509 +0200

HID: wacom: fix problems when device is not a valid USB device

commit 720ac467204a70308bd687927ed475afb904e11b upstream.

The wacom driver accepts devices of more than just USB types, but some
code paths can cause problems if the device being controlled is not a
USB device due to a lack of checking.  Add the needed checks to ensure
that the USB device accesses are only happening on a "real" USB device,
and not one on some other bus.

Cc: Jiri Kosina <jikos@kernel.org>
Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: linux-input@vger.kernel.org
Cc: stable@vger.kernel.org
Tested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Link: https://lore.kernel.org/r/20211201183503.2373082-2-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 1309eb2ef1001c4cc7e07b867ad9576d2cfeab47)
Issue: FP3SEC-378
Change-Id: I605a7a3598b54693ce2104d4afdbdf879bb7fb2e