From a687c5765b5ae19fe559e14615ddc87ebb46d409 Mon Sep 17 00:00:00 2001 From: Roderick Colenbrander Date: Fri, 24 Feb 2017 16:14:15 -0800 Subject: [PATCH] HID: sony: Fix input device leak when connecting a DS4 twice using USB/BT When a user connects a DS4 twice using USB and BT, we reject the second device connection after the setup work. We then perform a cleanup, but during cleanup we are not removing the touchpad device. This leads to leakage of an input device, which we would never remove. It can likely result into a kernel oops as well when the touchpad evdev node is accessed and the underlaying HID device has been removed from the system. [jkosina@suse.cz: added stable annotation] Fixes: ac797b95f532 ("HID: sony: Make the DS4 touchpad a separate device") Cc: stable@vger.kernel.org Signed-off-by: Roderick Colenbrander Reviewed-by: Benjamin Tissoires Signed-off-by: Jiri Kosina --- drivers/hid/hid-sony.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c index f405b07d0381..740996f9bdd4 100644 --- a/drivers/hid/hid-sony.c +++ b/drivers/hid/hid-sony.c @@ -2632,6 +2632,8 @@ err_stop: sony_leds_remove(sc); if (sc->quirks & SONY_BATTERY_SUPPORT) sony_battery_remove(sc); + if (sc->touchpad) + sony_unregister_touchpad(sc); sony_cancel_work_sync(sc); kfree(sc->output_report_dmabuf); sony_remove_dev_list(sc); -- 2.20.1