linux-kernel - Re: [PATCH] HID: wacom: Don't add ghost interface as shared data

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Message-ID: <alpine.LSU.2.20.1703301131100.31814@cbobk.fhfr.pm>
Date:   Thu, 30 Mar 2017 11:31:24 +0200 (CEST)
From:   Jiri Kosina <jikos@...nel.org>
To:     Aaron Armstrong Skomra <skomra@...il.com>
cc:     linux-input@...r.kernel.org, pinglinux@...il.com,
        killertofu@...il.com, linux-kernel@...r.kernel.org,
        Aaron Armstrong Skomra <aaron.skomra@...om.com>
Subject: Re: [PATCH] HID: wacom: Don't add ghost interface as shared data

On Wed, 29 Mar 2017, Aaron Armstrong Skomra wrote:

> A previous commit (below) adds a check for already probed interfaces to
> Wacom's matching heuristic. Unfortunately this causes the Bamboo Pen
> (CTL-460) to match itself to its 'ghost' touch interface. After
> subsequent changes to the driver this match to the ghost causes the
> kernel to crash. This patch avoids calling wacom_add_shared_data()
> for the BAMBOO_PEN's ghost touch interface.
> 
> Fixes: 41372d5d40e7 ("HID: wacom: Augment 'oVid' and 'oPid' with heuristics for HID_GENERIC")
> Cc: stable <stable@...r.kernel.org>     # 4.9
> Signed-off-by: Aaron Armstrong Skomra <aaron.skomra@...om.com>

Applied to for-4.11/upstream-fixes.

-- 
Jiri Kosina
SUSE Labs