linux-kernel - [PATCH 3.18 33/83] Input: xpad - fix clash of presence handling with LED setting

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Message-Id: <20181129140139.784365011@linuxfoundation.org>
Date:   Thu, 29 Nov 2018 15:11:51 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Pavel Rojtberg <rojtberg@...il.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 3.18 33/83] Input: xpad - fix clash of presence handling with LED setting

3.18-stable review patch.  If anyone has any objections, please let me know.

------------------

[ Upstream commit fbe6a3114471cccaeaeabfa56937731503ece545 ]

Do not call xpad_identify_controller at init with wireless devices: it
conflicts with the already sent presence packet and will be called by
xpad360w_process_packet as needed anyway.

Signed-off-by: Pavel Rojtberg <rojtberg@...il.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/input/joystick/xpad.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c
index ff368860a5f9..1a66443f3cd5 100644
--- a/drivers/input/joystick/xpad.c
+++ b/drivers/input/joystick/xpad.c
@@ -1003,8 +1003,15 @@ static int xpad_led_probe(struct usb_xpad *xpad)
 	if (error)
 		goto err_free_id;
 
-	/* Light up the segment corresponding to controller number */
-	xpad_identify_controller(xpad);
+	if (xpad->xtype == XTYPE_XBOX360) {
+		/*
+		 * Light up the segment corresponding to controller
+		 * number on wired devices. On wireless we'll do that
+		 * when they respond to "presence" packet.
+		 */
+		xpad_identify_controller(xpad);
+	}
+
 	return 0;
 
 err_free_id:
-- 
2.17.1