HID: sony: Use DS4 MAC address as unique identifier on USB

The DS4 MAC address is reported as a unique identified when
using Bluetooth. For USB there is no unique identifier reported
yet, so use the MAC address.

Signed-off-by: Roderick Colenbrander <roderick.colenbrander@sony.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c
index f68c921af55e..c6982a29a56d 100644
--- a/drivers/hid/hid-sony.c
+++ b/drivers/hid/hid-sony.c
@@ -2390,6 +2390,12 @@ static int sony_check_add(struct sony_sc *sc)
                 }
 
                 memcpy(sc->mac_address, &buf[1], sizeof(sc->mac_address));
+
+                snprintf(sc->hdev->uniq, sizeof(sc->hdev->uniq),
+                        "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
+                        sc->mac_address[5], sc->mac_address[4],
+                        sc->mac_address[3], sc->mac_address[2],
+                        sc->mac_address[1], sc->mac_address[0]);
         } else if ((sc->quirks & SIXAXIS_CONTROLLER_USB) ||
                         (sc->quirks & NAVIGATION_CONTROLLER_USB)) {
                 buf = kmalloc(SIXAXIS_REPORT_0xF2_SIZE, GFP_KERNEL);