linux-kernel - [PATCH] usb: gadget: f_hid: fix endianness issue with descriptors

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Message-Id: <20210617162755.29676-1-ruslan.bilovol@gmail.com>
Date:   Thu, 17 Jun 2021 19:27:55 +0300
From:   Ruslan Bilovol <ruslan.bilovol@...il.com>
To:     Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Fabien Chouteau <fabien.chouteau@...co.com>,
        Segiy Stetsyuk <serg_stetsuk@....net>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        stable@...nel.org
Subject: [PATCH] usb: gadget: f_hid: fix endianness issue with descriptors

Running sparse checker it shows warning message about
incorrect endianness used for descriptor initialization:

| f_hid.c:91:43: warning: incorrect type in initializer (different base types)
| f_hid.c:91:43:    expected restricted __le16 [usertype] bcdHID
| f_hid.c:91:43:    got int

Fixing issue with cpu_to_le16() macro

Fixes: 71adf1189469 ("USB: gadget: add HID gadget driver")
Cc: Fabien Chouteau <fabien.chouteau@...co.com>
Cc: Segiy Stetsyuk <serg_stetsuk@....net>
Cc: stable@...nel.org
Signed-off-by: Ruslan Bilovol <ruslan.bilovol@...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 70774d8cb14e..02683ac0719d 100644
--- a/drivers/usb/gadget/function/f_hid.c
+++ b/drivers/usb/gadget/function/f_hid.c
@@ -88,7 +88,7 @@ static struct usb_interface_descriptor hidg_interface_desc = {
 static struct hid_descriptor hidg_desc = {
 	.bLength			= sizeof hidg_desc,
 	.bDescriptorType		= HID_DT_HID,
-	.bcdHID				= 0x0101,
+	.bcdHID				= cpu_to_le16(0x0101),
 	.bCountryCode			= 0x00,
 	.bNumDescriptors		= 0x1,
 	/*.desc[0].bDescriptorType	= DYNAMIC */
-- 
2.17.1