Commits
Frank Praznik committed d2d782fccee
HID: sony: Prevent duplicate controller connections. If a Sixaxis or Dualshock 4 controller is connected via USB while already connected via Bluetooth it will cause duplicate devices to be added to the input device list. To prevent this a global list of controllers and their MAC addresses is maintained and new controllers are checked against this list. If a duplicate is found, the probe function will exit with -EEXIST. On USB the MAC is retrieved via a feature report. On Bluetooth neither controller reports the MAC address in a feature report so the MAC is parsed from the uniq string. As uniq cannot be guaranteed to be a MAC address in every case (uHID or the behavior of HIDP changing) a parsing failure will not prevent the connection. Signed-off-by: Frank Praznik <frank.praznik@oh.rr.com> Reviewed-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>