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

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Date:   Mon, 17 May 2021 14:01:45 +0800
From:   Qiang Ma <maqianga@...ontech.com>
To:     jikos@...nel.org, benjamin.tissoires@...hat.com,
        linux-usb@...r.kernel.org
Cc:     linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        Qiang Ma <maqianga@...ontech.com>
Subject: [PATCH] HID: usbhid: enable remote wakeup for mouse

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@...ontech.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