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 <frank.praznik@oh.rr.com>
Acked-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 27 insertions, 0 deletions

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