HID: uhid: add UHID_START and UHID_STOP events (ec4b7dea) · Commits · 戴 / test

We send UHID_START and UHID_STOP events to user-space when the HID core starts/stops the device. This notifies user-space about driver readiness and data-I/O can start now. This directly forwards the callbacks from hid-core to user-space. Signed-off-by:

David Herrmann <dh.herrmann@googlemail.com> Signed-off-by:

Jiri Kosina <jkosina@suse.cz>

drivers/hid/uhid.c

+7 −1

Original line number	Diff line number	Diff line
		@@ -82,11 +82,17 @@ static int uhid_queue_event(struct uhid_device *uhid, __u32 event)

		static int uhid_hid_start(struct hid_device *hid)
		{
		return 0;
		struct uhid_device *uhid = hid->driver_data;

		return uhid_queue_event(uhid, UHID_START);
		}

		static void uhid_hid_stop(struct hid_device *hid)
		{
		struct uhid_device *uhid = hid->driver_data;

		hid->claimed = 0;
		uhid_queue_event(uhid, UHID_STOP);
		}

		static int uhid_hid_open(struct hid_device *hid)

include/linux/uhid.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -25,6 +25,8 @@
		enum uhid_event_type {
		UHID_CREATE,
		UHID_DESTROY,
		UHID_START,
		UHID_STOP,
		UHID_INPUT,
		};

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