linux-kernel - Re: [PATCH] HID: usbhid: enable remote wakeup for mice

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Date:   Thu, 23 Feb 2023 19:22:34 +0800
From:   Michael Wu <michael@...winnertech.com>
To:     Oliver Neukum <oneukum@...e.com>, jikos@...nel.org,
        benjamin.tissoires@...hat.com
Cc:     linux-usb@...r.kernel.org, linux-input@...r.kernel.org,
        linux-kernel@...r.kernel.org, richard.gong@....com,
        mario.limonciello@....com
Subject: Re: [PATCH] HID: usbhid: enable remote wakeup for mice

Dear Oliver,

On 2/22/2023 5:34 PM, Oliver Neukum wrote:
> On 22.02.23 02:39, Michael Wu wrote:
>> This patch fixes a problem that USB mouse can't wake up the device that
>> enters standby.
> 
> Hi,
> 
> I am afraid I need to ask you to be a bit more precise here.
> Are you referring to USB mice being unable to wake up a system,
> even if you so request via sysfs, or that they won't by default?
> 
>      Regards
>          Oliver

Yes. I can't use any USB mouse which supports Remote Wakeup to wake up 
the system by default.
If I enable the wakeup node in /sys/bus/usb/devices which is disabled by 
default, the mouse can wakeup the system successfully.
Clearly, the only thing I can do is to register the wakeup source for 
USB Mouse devices.

-- 
Regards,
Michael Wu