linux-kernel - Re: [PATCH v1 1/2] HID: usbhid: enable remote wakeup function for usbhid device

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Message-ID: <654e90fb-2f04-1f87-f56c-792757e140a0@suse.com>
Date:   Tue, 14 Dec 2021 15:21:50 +0100
From:   Oliver Neukum <oneukum@...e.com>
To:     zhuyinbo <zhuyinbo@...ngson.cn>, Oliver Neukum <oneukum@...e.com>,
        Jiri Kosina <jikos@...nel.org>, benjamin.tissoires@...hat.com,
        gregkh@...uxfoundation.org, Thinh.Nguyen@...opsys.com,
        mathias.nyman@...ux.intel.com, stern@...land.harvard.edu,
        rajatja@...gle.com, chris.chiu@...onical.com,
        linux-usb@...r.kernel.org, linux-input@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 1/2] HID: usbhid: enable remote wakeup function for
 usbhid device


On 10.12.21 10:50, zhuyinbo wrote:
Hi,
> system ask that must it must be accped a acpi lid open event then
> system will always into resume state for laptop, otherwise, eventhough
> that system be wakeuped by other event then system will continue into
> suspend.
Lid events are necesarily for the whole system.
>
> and for laptop usb wakeup that as general ask bios to enable usb
> wakeup then if need do more things to enable usb wakeup I think this
> usb wakeup function isn't friendly and inconveient, so enable it by
> default.
> after add this patch, if want to use usb wakeup function it only need
> enable bios configure it think it is appropriate.
>
No. If you wish your laptop to be resumed by USB events, that is one thing.
You can alter the system settings. That must work. But it is a different
issue

from the default.

In general any HID device must have wakeup capability to be usable for
selective suspend. You cannot draw conclusions from that.

    Regards
        Oliver