HID: lenovo: Add note about different report numbers

Signed-off-by: Florian Klink <flokli@flokli.de> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
mariux64 · May 2, 2022 · 5c9b8fa · 5c9b8fa
1 parent a0a5c2a
commit 5c9b8fa
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/drivers/hid/hid-lenovo.c b/drivers/hid/hid-lenovo.c
@@ -487,6 +487,11 @@ static int lenovo_send_cmd_cptkbd(struct hid_device *hdev,
 	if (!buf)
 		return -ENOMEM;
 
+	/*
+	 * Feature report 0x13 is used for USB,
+	 * output report 0x18 is used for Bluetooth.
+	 * buf[0] is ignored by hid_hw_raw_request.
+	 */
 	buf[0] = 0x18;
 	buf[1] = byte2;
 	buf[2] = byte3;