From: ValdikSS <iam@valdikss.org.ru>
Date: Sun, 13 Feb 2022 21:49:24 +0000 (+0100)
Subject: HID: lenovo: Add note about different report numbers
X-Git-Tag: v5.19-rc1~184^2~3^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=5c9b8fae88bc2f629926b7949dbc3672d4fbdad2;p=thirdparty%2Flinux.git

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>
---

diff --git a/drivers/hid/hid-lenovo.c b/drivers/hid/hid-lenovo.c
index e9466ae8a9cb8..9dabd63232343 100644
--- 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;