linux-kernel - Re: [Regression] 5.3-rc1: hid_llogitech

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Date:   Thu, 25 Jul 2019 17:50:17 +0200
From:   Hans de Goede <hdegoede@...hat.com>
To:     "Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:     Linux Kernel Mailing <linux-kernel@...r.kernel.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        Jiri Kosina <jikos@...nel.org>, linux-input@...r.kernel.org
Subject: Re: [Regression] 5.3-rc1: hid_llogitech_dj does not work

Hi Rafael,

On 25-07-19 12:07, Rafael J. Wysocki wrote:
> Hi Hans,
> 
> This is similar to a problem I reported some time ago:
> 
> https://lore.kernel.org/lkml/2268131.Lc39eCoc3j@kreacher/
> 
> and the device affected by it is the same.
> 
> The symptom is simply that the mouse just doesn't work (no reaction).  If I do
> "rmmod hid_llogitech_dj", it says "Killed", but the module does go away and
> the mouse starts to work (through the generic code I suppose), but then
> the machine hangs on attempts to suspend (nasty).
> 
> Reverting all of the hid_llogitech_dj changes between 5.2 and 5.3-rc1:
> 
> dbcbabf7da92 HID: logitech-dj: fix return value of logi_dj_recv_query_hidpp_devices
> 39d21e7e0043 HID: logitech-dj: make const array template static
> 423dfbc362b7 HID: logitech-dj: Add usb-id for the 27MHz MX3000 receiver
> 
> helps here, but the first two don't really look like they can make any difference,
> so I guess I'm an unlucky owner of a MX3000 that doesn't quite work as expected.
> 
> Any help will be appreciated. :-)

Actually we received another bug report about this and the reporter there
has come up with a patch with points to

dbcbabf7da92 HID: logitech-dj: fix return value of logi_dj_recv_query_hidpp_devices

Being the culprit, can you try just reverting that one?

I will take a closer look at this soonish.

Thank & Regards,

Hans