From: Frank Praznik Date: Wed, 22 Jan 2014 18:49:43 +0000 (-0500) Subject: HID: Add the transport-driver function to the uhid driver X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=596cfdd80ab8ad11c750511da2c8c9a33f188ba0;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git 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: Frank Praznik Acked-by: David Herrmann Signed-off-by: Jiri Kosina --- diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c index cedc6da93c19..f5a2b1931143 100644 --- a/drivers/hid/uhid.c +++ b/drivers/hid/uhid.c @@ -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