Hello! On 2/22/23 4:39 AM, Michael Wu wrote: > This patch fixes a problem that USB mouse can't wake up the device that > enters standby. > > At present, the kernel only checks whether certain USB manufacturers > support wake-up, which will easily cause inconvenience to the > development work of other manufacturers and add unnecessary work to the > maintenance of kernel. > > The USB protocol supports judging whether a usb supports the wake-up > function, so it should be more reasonable to add a wake-up source by > directly checking the settings from the USB protocol. > > There was a similar issue on the keyboard before, which was fixed by > this patch (3d61510f4eca), but now the problem happened on the mouse. > This patch uses a similar idea to fix this problem. > > Signed-off-by: Michael Wu <michael@xxxxxxxxxxxxxxxxx> > --- > drivers/hid/usbhid/hid-core.c | 8 ++++++++ > drivers/hid/usbhid/usbmouse.c | 1 + > 2 files changed, 9 insertions(+) > > diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c > index be4c731aaa65..d3a6755cca09 100644 > --- a/drivers/hid/usbhid/hid-core.c > +++ b/drivers/hid/usbhid/hid-core.c > @@ -1189,6 +1189,14 @@ static int usbhid_start(struct hid_device *hid) > device_set_wakeup_enable(&dev->dev, 1); > } > > + /** The kernel-doc comments should not be used here in the function body. > + * NOTE: 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; > [...] MBR, Sergey
