USB HID: provide hook for hidraw write() (efc493f9) · Commits · 戴 / test

drivers/hid/usbhid/hid-core.c

+23 −0

Original line number	Diff line number	Diff line
		@@ -628,6 +628,28 @@ static int hid_alloc_buffers(struct usb_device dev, struct hid_device hid)
		return 0;
		}

		static int usbhid_output_raw_report(struct hid_device hid, __u8 buf, size_t count)
		{
		struct usbhid_device *usbhid = hid->driver_data;
		struct usb_device *dev = hid_to_usb_dev(hid);
		struct usb_interface *intf = usbhid->intf;
		struct usb_host_interface *interface = intf->cur_altsetting;
		int ret;

		ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
		HID_REQ_SET_REPORT,
		USB_DIR_OUT \| USB_TYPE_CLASS \| USB_RECIP_INTERFACE,
		cpu_to_le16(((HID_OUTPUT_REPORT + 1) << 8) \| *buf),
		interface->desc.bInterfaceNumber, buf + 1, count - 1,
		USB_CTRL_SET_TIMEOUT);

		/* count also the report id */
		if (ret > 0)
		ret++;

		return ret;
		}

		static void hid_free_buffers(struct usb_device dev, struct hid_device hid)
		{
		struct usbhid_device *usbhid = hid->driver_data;
		@@ -871,6 +893,7 @@ static struct hid_device usb_hid_configure(struct usb_interface intf)
		hid->hiddev_hid_event = hiddev_hid_event;
		hid->hiddev_report_event = hiddev_report_event;
		#endif
		hid->hid_output_raw_report = usbhid_output_raw_report;
		return hid;

		fail: