[PATCH] HID: usbhid: enable remote wakeup for mouse

[PATCH] HID: usbhid: enable remote wakeup for mouse

[huanglei814]

From: huanglei <huanglei@kylinos.cn>

This patch enables remote wakeup by default for USB mouse
devices.  Mouse can used to be wakeup devices, but the correct
place to enable it depends on the device's bus; no single
approach will work for all mouse devices.  In particular, this
covers only USB mouse (and then only those supporting the boot
protocol).

Signed-off-by: huanglei <huanglei@kylinos.cn>
---
 drivers/hid/usbhid/hid-core.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index a90ed2ceae84..7ed3ab36426d 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -1189,6 +1189,15 @@ static int usbhid_start(struct hid_device *hid)
 		device_set_wakeup_enable(&dev->dev, 1);
 	}
 
+	/* enable remote wakeup by default for all mouse
+	 * devices supporting the boot protocol.
+	 */
+	if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT &&
+			interface->desc.bInterfaceProtocol ==
+				USB_INTERFACE_PROTOCOL_MOUSE) {
+		device_set_wakeup_enable(&dev->dev, 1);
+	}
+
 	mutex_unlock(&usbhid->mutex);
 	return 0;
 
-- 
2.17.1

Re: [PATCH] HID: usbhid: enable remote wakeup for mouse

[Oliver Neukum]

On 22.05.24 11:22, huanglei814 wrote:
> From: huanglei <huanglei@kylinos.cn>
> 
> This patch enables remote wakeup by default for USB mouse
> devices.  Mouse can used to be wakeup devices, but the correct
> place to enable it depends on the device's bus; no single
> approach will work for all mouse devices.  In particular, this
> covers only USB mouse (and then only those supporting the boot
> protocol).

Hi,

could you explain in the log why you want this to depend
on support for the boot protocol?

	Regards
		Oliver

Re: [PATCH] HID: usbhid: enable remote wakeup for mouse

[huanglei]

Just wanted to support mouse  wake up.

Set it in userspace will be a better choice， Now，canceled the patch.



在 2024/5/22 18:00, Oliver Neukum 写道:
> On 22.05.24 11:22, huanglei814 wrote:
>> From: huanglei <huanglei@kylinos.cn>
>>
>> This patch enables remote wakeup by default for USB mouse
>> devices.  Mouse can used to be wakeup devices, but the correct
>> place to enable it depends on the device's bus; no single
>> approach will work for all mouse devices.  In particular, this
>> covers only USB mouse (and then only those supporting the boot
>> protocol).
>
> Hi,
>
> could you explain in the log why you want this to depend
> on support for the boot protocol?
>
>     Regards
>         Oliver

Re: [PATCH] HID: usbhid: enable remote wakeup for mouse

[Greg KH]

On Wed, May 22, 2024 at 05:22:57PM +0800, huanglei814 wrote:
> From: huanglei <huanglei@kylinos.cn>
> 
> This patch enables remote wakeup by default for USB mouse
> devices.

That is not a good idea.  Please see the mailing list archives for the
past 20+ years for why this is the way it is.

If you know your device can support this, please set it in userspace,
but we can not change the default value at this point in time, sorry.

> Mouse can used to be wakeup devices, but the correct
> place to enable it depends on the device's bus; no single
> approach will work for all mouse devices.  In particular, this
> covers only USB mouse (and then only those supporting the boot
> protocol).

And that is really not a wise choice, boot protocol mice have no
requirement that they support remote wakeup.  So restricting it like
this really will not help, sorry.

Again, do this in userspace, that's why the interface is there to do so.

greg k-h

[PATCH] HID: usbhid: enable remote wakeup for mouse

[Qiang Ma]

This patch enables remote wakeup by default for USB mouse
devices.  Mouse in general are supposed to be wakeup devices, but
the correct place to enable it depends on the device's bus; no single
approach will work for all mouse devices.  In particular, this
covers only USB mouse (and then only those supporting the boot
protocol).

Signed-off-by: Qiang Ma <maqianga@uniontech.com>
---
 drivers/hid/usbhid/hid-core.c | 12 +++++++-----
 drivers/hid/usbhid/usbmouse.c |  1 +
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index 86257ce6d619..592aa57a97f5 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -1186,11 +1186,13 @@ static int usbhid_start(struct hid_device *hid)
 	 * In addition, enable remote wakeup by default for all keyboard
 	 * devices supporting the boot protocol.
 	 */
-	if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT &&
-			interface->desc.bInterfaceProtocol ==
-				USB_INTERFACE_PROTOCOL_KEYBOARD) {
-		usbhid_set_leds(hid);
-		device_set_wakeup_enable(&dev->dev, 1);
+	if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT) {
+		if (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_KEYBOARD ||
+			interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE) {
+			if (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_KEYBOARD)
+				usbhid_set_leds(hid);
+			device_set_wakeup_enable(&dev->dev, 1);
+		}
 	}
 
 	mutex_unlock(&usbhid->mutex);
diff --git a/drivers/hid/usbhid/usbmouse.c b/drivers/hid/usbhid/usbmouse.c
index 073127e65ac1..cf785369a5ed 100644
--- a/drivers/hid/usbhid/usbmouse.c
+++ b/drivers/hid/usbhid/usbmouse.c
@@ -188,6 +188,7 @@ static int usb_mouse_probe(struct usb_interface *intf, const struct usb_device_i
 		goto fail3;
 
 	usb_set_intfdata(intf, mouse);
+	device_set_wakeup_enable(&dev->dev, 1);
 	return 0;
 
 fail3:	
-- 
2.20.1

Re: [PATCH] HID: usbhid: enable remote wakeup for mouse

[Oliver Neukum]

Am Montag, den 17.05.2021, 14:01 +0800 schrieb Qiang Ma:
> This patch enables remote wakeup by default for USB mouse
> devices.  Mouse in general are supposed to be wakeup devices, but
> the correct place to enable it depends on the device's bus; no single
> approach will work for all mouse devices.  In particular, this
> covers only USB mouse (and then only those supporting the boot
> protocol).
> 

Hi,

have you tested this? In my experience the issue with mice
is that they wake up only when you press a mouse button, not when you
move the mouse. Do we make a promise we cannot keep here?

	Regards
		Oliver

Re: [PATCH] HID: usbhid: enable remote wakeup for mouse

[Alan Stern]

On Mon, May 17, 2021 at 10:31:45AM +0200, Oliver Neukum wrote:
> Am Montag, den 17.05.2021, 14:01 +0800 schrieb Qiang Ma:
> > This patch enables remote wakeup by default for USB mouse
> > devices.  Mouse in general are supposed to be wakeup devices, but

I disagree with that statement.  Who decided that mice are supposed to 
be wakeup devices?

> > the correct place to enable it depends on the device's bus; no single
> > approach will work for all mouse devices.  In particular, this
> > covers only USB mouse (and then only those supporting the boot
> > protocol).
> > 
> 
> Hi,
> 
> have you tested this? In my experience the issue with mice
> is that they wake up only when you press a mouse button, not when you
> move the mouse. Do we make a promise we cannot keep here?

Even worse, if a mouse is enabled for wakeup then the system may get 
woken up at the wrong time.  The example people often use is a laptop 
with a USB mouse thrown into a backpack while it is asleep.  Something 
else inside the backpack may accidentally press against a mouse button, 
causing the system to wake up even though the user wants it to remain 
asleep.

Alan Stern

Re: [PATCH] HID: usbhid: enable remote wakeup for mouse

[Greg KH]

On Mon, May 17, 2021 at 02:01:45PM +0800, Qiang Ma wrote:
> This patch enables remote wakeup by default for USB mouse
> devices.  Mouse in general are supposed to be wakeup devices, but
> the correct place to enable it depends on the device's bus; no single
> approach will work for all mouse devices.  In particular, this
> covers only USB mouse (and then only those supporting the boot
> protocol).
> 
> Signed-off-by: Qiang Ma <maqianga@uniontech.com>

Based on hardware testing, I do not think we can do this as no other
operating system does this, right?  It's not a requirement of the USB
specification to support this, so we can not enforce it either.


> ---
>  drivers/hid/usbhid/hid-core.c | 12 +++++++-----
>  drivers/hid/usbhid/usbmouse.c |  1 +
>  2 files changed, 8 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
> index 86257ce6d619..592aa57a97f5 100644
> --- a/drivers/hid/usbhid/hid-core.c
> +++ b/drivers/hid/usbhid/hid-core.c
> @@ -1186,11 +1186,13 @@ static int usbhid_start(struct hid_device *hid)
>  	 * In addition, enable remote wakeup by default for all keyboard
>  	 * devices supporting the boot protocol.
>  	 */
> -	if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT &&
> -			interface->desc.bInterfaceProtocol ==
> -				USB_INTERFACE_PROTOCOL_KEYBOARD) {
> -		usbhid_set_leds(hid);
> -		device_set_wakeup_enable(&dev->dev, 1);
> +	if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT) {
> +		if (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_KEYBOARD ||
> +			interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE) {
> +			if (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_KEYBOARD)
> +				usbhid_set_leds(hid);
> +			device_set_wakeup_enable(&dev->dev, 1);
> +		}
>  	}
>  
>  	mutex_unlock(&usbhid->mutex);
> diff --git a/drivers/hid/usbhid/usbmouse.c b/drivers/hid/usbhid/usbmouse.c
> index 073127e65ac1..cf785369a5ed 100644
> --- a/drivers/hid/usbhid/usbmouse.c
> +++ b/drivers/hid/usbhid/usbmouse.c
> @@ -188,6 +188,7 @@ static int usb_mouse_probe(struct usb_interface *intf, const struct usb_device_i
>  		goto fail3;
>  
>  	usb_set_intfdata(intf, mouse);
> +	device_set_wakeup_enable(&dev->dev, 1);
>  	return 0;
>  
>  fail3:	
> -- 
> 2.20.1

How many different devices did you test this on?

thanks,

greg k-h