HID: uHID: implement .raw_request

uHID is missing a SET_REPORT protocol implementation, but as
.hid_get_raw_report() as been removed from struct hid_device,
there were no means to access GET_REPORT in uhid.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c
index b6de90392075..60acee422fdc 100644
--- a/drivers/hid/uhid.c
+++ b/drivers/hid/uhid.c
@@ -250,6 +250,21 @@ static int uhid_hid_output_report(struct hid_device *hid, __u8 *buf,
         return uhid_hid_output_raw(hid, buf, count, HID_OUTPUT_REPORT);
 }
 
+static int uhid_raw_request(struct hid_device *hid, unsigned char reportnum,
+                            __u8 *buf, size_t len, unsigned char rtype,
+                            int reqtype)
+{
+        switch (reqtype) {
+        case HID_REQ_GET_REPORT:
+                return uhid_hid_get_raw(hid, reportnum, buf, len, rtype);
+        case HID_REQ_SET_REPORT:
+                /* TODO: implement proper SET_REPORT functionality */
+                return -ENOSYS;
+        default:
+                return -EIO;
+        }
+}
+
 static struct hid_ll_driver uhid_hid_driver = {
         .start = uhid_hid_start,
         .stop = uhid_hid_stop,
@@ -257,6 +272,7 @@ static struct hid_ll_driver uhid_hid_driver = {
         .close = uhid_hid_close,
         .parse = uhid_hid_parse,
         .output_report = uhid_hid_output_report,
+        .raw_request = uhid_raw_request,
 };
 
 #ifdef CONFIG_COMPAT