Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
MIME-Version: 1.0
References: <2262737.ElGaqSPkdT@kreacher> <1df12728a2e788788fd387588bac62023e123d16.camel@hadess.net>
 <2145955.irdbgypaU6@kreacher> <CAJZ5v0ic+pm+NWD8g4O2MwQEvi+xuB-W9Wpd6c1RhprhoxuK1g@mail.gmail.com>
 <8281ddcc16cc950f9cde4b196cf208adcc798319.camel@hadess.net>
 <CAJZ5v0gjAGZFS6ap+NAbsi96hq7y9MRGE0h_A-n6xfB1CMs=2g@mail.gmail.com>
 <cd8b2a2160f5d36d1b73bc0567cd0f6e7e5751c4.camel@hadess.net>
 <CAJZ5v0gRm1NG=QuDFDFdcZgTu7Q0Z3cW3fwGg09sD+3BBV8E1A@mail.gmail.com> <91367d07a72ecb2065faebe974c54ebd966e0d59.camel@hadess.net>
In-Reply-To: <91367d07a72ecb2065faebe974c54ebd966e0d59.camel@hadess.net>
From:   "Rafael J. Wysocki" <rafael@kernel.org>
Date:   Wed, 7 Dec 2022 18:44:40 +0100
Message-ID: <CAJZ5v0ghW2DdC0quVQ-+Oad7bR95Pyp4Uhd9=XUYk9SQrXKj5w@mail.gmail.com>
Subject: Re: [Regression] Logitech BT mouse unusable after commit 532223c8ac57
 (still in 6.1-rc8)
To:     Bastien Nocera <hadess@hadess.net>
Cc:     "Rafael J. Wysocki" <rafael@kernel.org>,
        Jiri Kosina <jikos@kernel.org>,
        =?UTF-8?Q?Filipe_La=C3=ADns?= <lains@riseup.net>,
        Benjamin Tissoires <benjamin.tissoires@redhat.com>,
        linux-input@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>,
        Thorsten Leemhuis <regressions@leemhuis.info>
Content-Type: text/plain; charset="UTF-8"
Precedence: bulk

On Wed, Dec 7, 2022 at 6:19 PM Bastien Nocera <hadess@hadess.net> wrote:
>
> On Wed, 2022-12-07 at 12:07 +0100, Rafael J. Wysocki wrote:
> > # hidpp-list-features /dev/hidraw1
> > Bluetooth Mouse M336/M337/M535 (046d:b016) is a HID++ 4.5 device
> > Feature 0x01: [0x0001] Feature set
> > Feature 0x02: [0x0003] Device FW version
> > Feature 0x03: [0x0005] Device name
> > Feature 0x04: [0x0020] Reset
> > Feature 0x05: [0x1e00] Enable hidden features (hidden)
> > Feature 0x06: [0x1800] Generic Test (hidden, internal)
> > Feature 0x07: [0x1000] Battery status
> > Feature 0x08: [0x1b04] Reprog controls v4
> > Feature 0x09: [0x2100] Vertical scrolling
> > Feature 0x0a: [0x2200] Mouse pointer
> > Feature 0x0b: [0x2205] Pointer speed
> > Feature 0x0c: [0x18b1] ? (hidden, internal)
> > Feature 0x0d: [0x2121] Hi-res wheel
> > Feature 0x0e: [0x1f03] ? (hidden, internal)
>
> Would you be able to enable debugging for the hid subsystem to get some
> debug data when getting the version from the device fails?

I guess I could, but I think that the device is just quirky.

At least the BT layer appears to think that it is connected.

Anyway, what exactly do you need?

> I can't see any problems in there that wouldn't also have impacted all
> the other Logitech Bluetooth devices listed in the support devices
> list.
>
> If the problem is a timeout, maybe we should lower the timeouts we
> currently have (5*HZ = 5 seconds, right?), so we can retry 5 times one
> second instead.

No, it doesn't take 5 sec to get a response from it.  It rather looks
like __hidpp_send_report() returns an error.

>
> Still, as I mentioned earlier, I can't reproduce the problem on another
> Bluetooth Classic device...