Dear Sergei:
On 2/22/2023 4:59 PM, Sergei Shtylyov wrote:
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.
We will remove the NOTE comments.
+ * 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
--
Regards,
Michael Wu
