linux-kernel - [PATCH 1/2] HID: redragon: Fix regression in non-Redragon keyboard due to this new driver

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Date:   Sat, 28 Jul 2018 15:53:49 -0400
From:   John S Gruber <JohnSGruber@...il.com>
To:     Jiri Kosina <jikos@...nel.org>,
        Robert Munteanu <rombert@...che.org>,
        linux-input@...r.kernel.org, benjamin.tissoires@...hat.com,
        dmitry.torokhov@...il.com, linux-kernel@...r.kernel.org,
        JohnSGruber@...il.com
Subject: [PATCH 1/2] HID: redragon: Fix regression in non-Redragon keyboard
 due to this new driver

The Redragon keyboard uses the second device being presented, but other
devices with the same vendor_id/device_id pair (0x0c45:760b) use the first.
Don't cause its deletion. Problem introduced in commit 85455dd906d5
("HID: redragon: Fix modifier keys for Redragon Asura Keyboard")

Fixes: 85455dd906d5
Signed-off-by: John S Gruber <JohnSGruber@...il.com>
---
 drivers/hid/hid-redragon.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/hid/hid-redragon.c b/drivers/hid/hid-redragon.c
index daf5957..85a5fbb 100644
--- a/drivers/hid/hid-redragon.c
+++ b/drivers/hid/hid-redragon.c
@@ -55,10 +55,6 @@ static int redragon_probe(struct hid_device *dev,
 		return ret;
 	}

-	/* do not register unused input device */
-	if (dev->maxapplication == 1)
-		return 0;
-
 	ret = hid_hw_start(dev, HID_CONNECT_DEFAULT);
 	if (ret) {
 		hid_err(dev, "hw start failed\n");
-- 
1.9.1