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Add USB gadget uevents

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This commit is contained in:
Michel-FK 2019-10-28 22:53:25 +01:00
parent 08235a02f6
commit fe44a5e298
1 changed files with 43 additions and 0 deletions
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43
FunKey/board/funkey/patches/linux/0012-add-gadget-state-kobject-uevent.patch Normal file
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@ -0,0 +1,43 @@
diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c
index 284bd1a7..97db9fa4 100644
--- a/drivers/usb/gadget/udc/core.c
+++ b/drivers/usb/gadget/udc/core.c
@@ -973,15 +973,19 @@ static void usb_gadget_state_work(struct work_struct *work)
struct usb_gadget *gadget = work_to_gadget(work);
struct usb_udc *udc = gadget->udc;
- if (udc)
+ if (udc) {
sysfs_notify(&udc->dev.kobj, NULL, "state");
+ kobject_uevent(&udc->dev.kobj, KOBJ_CHANGE);
+ }
}
void usb_gadget_set_state(struct usb_gadget *gadget,
enum usb_device_state state)
{
- gadget->state = state;
- schedule_work(&gadget->work);
+ if (state != gadget->state) {
+ gadget->state = state;
+ schedule_work(&gadget->work);
+ }
}
EXPORT_SYMBOL_GPL(usb_gadget_set_state);
@@ -1565,6 +1569,15 @@ static int usb_udc_uevent(struct device *dev, struct kobj_uevent_env *env)
}
}
+ if (udc->gadget) {
+ ret = add_uevent_var(env, "USB_UDC_STATE=%s",
+ usb_state_string(udc->gadget->state));
+ if (ret) {
+ dev_err(dev, "failed to add uevent USB_UDC_STATE\n");
+ return ret;
+ }
+ }
+
return 0;
}