linux-kernel - [PATCH] HID: steam: Fix input device disappearing

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Date:   Tue,  7 Jan 2020 20:48:13 +0100
From:   Rodrigo Rivas Costa <rodrigorivascosta@...il.com>
To:     Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        Jiri Kosina <jikos@...nel.org>,
        "Pierre-Loup A. Griffais" <pgriffais@...vesoftware.com>,
        lkml <linux-kernel@...r.kernel.org>,
        linux-input <linux-input@...r.kernel.org>
Cc:     Rodrigo Rivas Costa <rodrigorivascosta@...il.com>
Subject: [PATCH] HID: steam: Fix input device disappearing

The `connected` value for wired devices was not properly initialized,
it must be set to `true` upon creation, because wired devices do not
generate connection events.

When a raw client (the Steam Client) uses the device, the input device
is destroyed. Then, when the raw client finishes, it must be recreated.
But since the `connected` variable was false this never happended.

Signed-off-by: Rodrigo Rivas Costa <rodrigorivascosta@...il.com>
---
 drivers/hid/hid-steam.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/hid/hid-steam.c b/drivers/hid/hid-steam.c
index 8dae0f9b819e..6286204d4c56 100644
--- a/drivers/hid/hid-steam.c
+++ b/drivers/hid/hid-steam.c
@@ -768,8 +768,12 @@ static int steam_probe(struct hid_device *hdev,
 
 	if (steam->quirks & STEAM_QUIRK_WIRELESS) {
 		hid_info(hdev, "Steam wireless receiver connected");
+		/* If using a wireless adaptor ask for connection status */
+		steam->connected = false;
 		steam_request_conn_status(steam);
 	} else {
+		/* A wired connection is always present */
+		steam->connected = true;
 		ret = steam_register(steam);
 		if (ret) {
 			hid_err(hdev,
-- 
2.24.1