linux-kernel - Re: [PATCH bpf-next v6 09/23] HID: core: store the unique system identifier in hid

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Message-ID: <YtD0dt3MxjSozgXg@kroah.com>
Date:   Fri, 15 Jul 2022 07:00:38 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Benjamin Tissoires <benjamin.tissoires@...hat.com>
Cc:     Jiri Kosina <jikos@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>, Shuah Khan <shuah@...nel.org>,
        Dave Marchevsky <davemarchevsky@...com>,
        Joe Stringer <joe@...ium.io>, Jonathan Corbet <corbet@....net>,
        Tero Kristo <tero.kristo@...ux.intel.com>,
        linux-kernel@...r.kernel.org, linux-input@...r.kernel.org,
        netdev@...r.kernel.org, bpf@...r.kernel.org,
        linux-kselftest@...r.kernel.org, linux-doc@...r.kernel.org
Subject: Re: [PATCH bpf-next v6 09/23] HID: core: store the unique system
 identifier in hid_device

On Tue, Jul 12, 2022 at 04:58:36PM +0200, Benjamin Tissoires wrote:
> This unique identifier is currently used only for ensuring uniqueness in
> sysfs. However, this could be handful for userspace to refer to a specific
> hid_device by this id.
> 
> 2 use cases are in my mind: LEDs (and their naming convention), and
> HID-BPF.
> 
> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>
> 


Reviewed-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>