linux-kernel - [PATCH v2] HID: sony: disable descriptor fixup for FutureMax Dance Mat

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20160721165448.14275-1-mikko.perttunen@kapsi.fi>
Date:	Thu, 21 Jul 2016 19:54:48 +0300
From:	Mikko Perttunen <mikko.perttunen@...si.fi>
To:	jikos@...nel.org, benjamin.tissoires@...hat.com
Cc:	ao2@....it, linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Mikko Perttunen <mperttunen@...dia.com>
Subject: [PATCH v2] HID: sony: disable descriptor fixup for FutureMax Dance Mat

From: Mikko Perttunen <mperttunen@...dia.com>

The FutureMax Dance Mat claims to be a SixAxis controller
but breaks if descriptor fixups are applied. Detect the
device using its USB product string and disable fixups
when it is detected.

Signed-off-by: Mikko Perttunen <mperttunen@...dia.com>
---
v2: don't use usb device properties

 drivers/hid/hid-sony.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c
index 310436a..29a1aa9 100644
--- a/drivers/hid/hid-sony.c
+++ b/drivers/hid/hid-sony.c
@@ -51,6 +51,7 @@
 #define NAVIGATION_CONTROLLER_USB BIT(9)
 #define NAVIGATION_CONTROLLER_BT  BIT(10)
 #define SINO_LITE_CONTROLLER      BIT(11)
+#define FUTUREMAX_DANCE_MAT       BIT(12)
 
 #define SIXAXIS_CONTROLLER (SIXAXIS_CONTROLLER_USB | SIXAXIS_CONTROLLER_BT)
 #define MOTION_CONTROLLER (MOTION_CONTROLLER_USB | MOTION_CONTROLLER_BT)
@@ -1125,7 +1126,7 @@ static u8 *sony_report_fixup(struct hid_device *hdev, u8 *rdesc,
 {
 	struct sony_sc *sc = hid_get_drvdata(hdev);
 
-	if (sc->quirks & SINO_LITE_CONTROLLER)
+	if (sc->quirks & (SINO_LITE_CONTROLLER | FUTUREMAX_DANCE_MAT))
 		return rdesc;
 
 	/*
@@ -2289,6 +2290,9 @@ static int sony_probe(struct hid_device *hdev, const struct hid_device_id *id)
 	struct sony_sc *sc;
 	unsigned int connect_mask = HID_CONNECT_DEFAULT;
 
+	if (!strcmp(hdev->name, "FutureMax Dance Mat"))
+		quirks |= FUTUREMAX_DANCE_MAT;
+
 	sc = devm_kzalloc(&hdev->dev, sizeof(*sc), GFP_KERNEL);
 	if (sc == NULL) {
 		hid_err(hdev, "can't alloc sony descriptor\n");
-- 
2.9.0