linux-kernel - Re: [PATCH 2/3] Revert "Input: hyperv-keyboard

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Message-ID: <Zv-j0qtWXsDz4Hah@google.com>
Date: Fri, 4 Oct 2024 01:14:10 -0700
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: "Srivatsa S. Bhat" <srivatsa@...il.mit.edu>
Cc: Erni Sri Satya Vennela <ernis@...ux.microsoft.com>, kys@...rosoft.com,
	haiyangz@...rosoft.com, wei.liu@...nel.org, decui@...rosoft.com,
	jikos@...nel.org, bentiss@...nel.org, linux-hyperv@...r.kernel.org,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	ernis@...rosoft.com, rafael@...nel.org, pavel@....cz,
	lenb@...nel.org, linux-pm@...r.kernel.org
Subject: Re: [PATCH 2/3] Revert "Input: hyperv-keyboard - register as a
 wakeup source"

On Tue, Sep 24, 2024 at 03:28:51AM +0000, Srivatsa S. Bhat wrote:
> [+linux-pm, Rafael, Len, Pavel]
> 
> On Thu, Sep 12, 2024 at 02:27:49PM -0700, Erni Sri Satya Vennela wrote:
> > This reverts commit 62238f3aadc9bc56da70100e19ec61b9f8d72a5f.
> > 
> > Remove keyboard as wakeup source since Suspend-to-Idle feature
> > is disabled.
> > 
> > Signed-off-by: Erni Sri Satya Vennela <ernis@...ux.microsoft.com>
> > ---
> >  drivers/input/serio/hyperv-keyboard.c | 12 ------------
> >  1 file changed, 12 deletions(-)
> > 
> > diff --git a/drivers/input/serio/hyperv-keyboard.c b/drivers/input/serio/hyperv-keyboard.c
> > index 31d9dacd2fd1..b42c546636bf 100644
> > --- a/drivers/input/serio/hyperv-keyboard.c
> > +++ b/drivers/input/serio/hyperv-keyboard.c
> > @@ -162,15 +162,6 @@ static void hv_kbd_on_receive(struct hv_device *hv_dev,
> >  			serio_interrupt(kbd_dev->hv_serio, scan_code, 0);
> >  		}
> >  		spin_unlock_irqrestore(&kbd_dev->lock, flags);
> > -
> > -		/*
> > -		 * Only trigger a wakeup on key down, otherwise
> > -		 * "echo freeze > /sys/power/state" can't really enter the
> > -		 * state because the Enter-UP can trigger a wakeup at once.
> > -		 */
> > -		if (!(info & IS_BREAK))
> > -			pm_wakeup_hard_event(&hv_dev->device);
> > -
> >  		break;
> >  
> >  	default:
> > @@ -356,9 +347,6 @@ static int hv_kbd_probe(struct hv_device *hv_dev,
> >  		goto err_close_vmbus;
> >  
> >  	serio_register_port(kbd_dev->hv_serio);
> > -
> > -	device_init_wakeup(&hv_dev->device, true);

If you do not want the keyboard to be a wakeup source by default maybe
change this to:

	device_set_wakeup_capable(&hv_dev->device, true);

and leave the rest of the driver alone?

Same for the HID change.

Thanks.

-- 
Dmitry