Thread (252 messages) 252 messages, 6 authors, 2021-07-21
STALE1784d

[PATCH 4.9 201/245] usb: gadget: f_hid: fix endianness issue with descriptors

From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2021-07-19 15:24:11
Also in: lkml
Subsystem: the rest, usb subsystem · Maintainers: Linus Torvalds, Greg Kroah-Hartman

From: Ruslan Bilovol <redacted>

[ Upstream commit 33cb46c4676d01956811b68a29157ea969a5df70 ]

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, however this is not a real issue
as the value is the same both endians.

Cc: Fabien Chouteau <redacted>
Cc: Segiy Stetsyuk <redacted>
Signed-off-by: Ruslan Bilovol <redacted>
Link: https://lore.kernel.org/r/20210617162755.29676-1-ruslan.bilovol@gmail.com (local)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 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 42e5677d932d..dd415b1589b5 100644
--- a/drivers/usb/gadget/function/f_hid.c
+++ b/drivers/usb/gadget/function/f_hid.c
@@ -91,7 +91,7 @@ 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 */
-- 
2.30.2


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