Commit 596cfdd8 authored by Frank Praznik's avatar Frank Praznik Committed by Jiri Kosina
Browse files

HID: Add the transport-driver function to the uhid driver 



Add the uhid_output_report transport-driver function to the uhid driver.

Signed-off-by: default avatarFrank Praznik <frank.praznik@oh.rr.com>
Acked-by: default avatarDavid Herrmann <dh.herrmann@gmail.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent 975a6832

drivers/hid/uhid.c

+27 −0
Original line number Diff line number Diff line
@@ -244,12 +244,39 @@ static int uhid_hid_output_raw(struct hid_device *hid, __u8 *buf, size_t count, 
	return count;

}



static int uhid_hid_output_report(struct hid_device *hid, __u8 *buf,

				  size_t count)

{

	struct uhid_device *uhid = hid->driver_data;

	unsigned long flags;

	struct uhid_event *ev;



	if (count < 1 || count > UHID_DATA_MAX)

		return -EINVAL;



	ev = kzalloc(sizeof(*ev), GFP_KERNEL);

	if (!ev)

		return -ENOMEM;



	ev->type = UHID_OUTPUT;

	ev->u.output.size = count;

	ev->u.output.rtype = UHID_OUTPUT_REPORT;

	memcpy(ev->u.output.data, buf, count);



	spin_lock_irqsave(&uhid->qlock, flags);

	uhid_queue(uhid, ev);

	spin_unlock_irqrestore(&uhid->qlock, flags);



	return count;

}



static struct hid_ll_driver uhid_hid_driver = {

	.start = uhid_hid_start,

	.stop = uhid_hid_stop,

	.open = uhid_hid_open,

	.close = uhid_hid_close,

	.parse = uhid_hid_parse,

	.output_report = uhid_hid_output_report,

};



#ifdef CONFIG_COMPAT