linux-kernel - [PATCH] usb: gadget: f_hid: idle uses the highest byte for duration

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Date:   Tue, 27 Jul 2021 21:58:00 +0300
From:   Maxim Devaev <mdevaev@...il.com>
To:     balbi@...nel.org
Cc:     gregkh@...uxfoundation.org, sandeen@...hat.com, mdevaev@...il.com,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] usb: gadget: f_hid: idle uses the highest byte for duration

SET_IDLE value must be shifted 8 bits to the right to get duration.
This confirmed by USBCV test.

Signed-off-by: Maxim Devaev <mdevaev@...il.com>
---
 drivers/usb/gadget/function/f_hid.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c
index 8d50c8b12..bb476e121 100644
--- a/drivers/usb/gadget/function/f_hid.c
+++ b/drivers/usb/gadget/function/f_hid.c
@@ -573,7 +573,7 @@ static int hidg_setup(struct usb_function *f,
 		  | HID_REQ_SET_IDLE):
 		VDBG(cdev, "set_idle\n");
 		length = 0;
-		hidg->idle = value;
+		hidg->idle = value >> 8;
 		goto respond;
 		break;
 
-- 
2.32.0