linux-kernel - [41/82] USB: Change acm_iad_descriptor bFunctionProtocol to USB_CDC_ACM_PROTO_AT

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Date:	Fri, 19 Nov 2010 13:56:02 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Linus Walleij <linus.walleij@...ricsson.com>,
	Praveena Nadahally <praveen.nadahally@...ricsson.com>
Subject: [41/82] USB: Change acm_iad_descriptor bFunctionProtocol to USB_CDC_ACM_PROTO_AT_V25TER

2.6.35-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Praveena Nadahally <praveen.nadahally@...ricsson.com>

commit 5c8db070b4480c43394680d9dfd2ddb06b97d2ae upstream.

The protocol code is set 00 in IAD and it's set to 01 in ACM control
interface descriptor in f_acm.c file. Due to this, windows is unable to
install the modem(ACM) driver based on class-subclass-protocol matching.

This patch corrects the protocol code in ACM IAD to the same as in
acm_control_interface_desc protocol code.

Acked-by: Linus Walleij <linus.walleij@...ricsson.com>
Signed-off-by: Praveena Nadahally <praveen.nadahally@...ricsson.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/usb/gadget/f_acm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/gadget/f_acm.c
+++ b/drivers/usb/gadget/f_acm.c
@@ -111,7 +111,7 @@ acm_iad_descriptor = {
 	.bInterfaceCount = 	2,	// control + data
 	.bFunctionClass =	USB_CLASS_COMM,
 	.bFunctionSubClass =	USB_CDC_SUBCLASS_ACM,
-	.bFunctionProtocol =	USB_CDC_PROTO_NONE,
+	.bFunctionProtocol =	USB_CDC_ACM_PROTO_AT_V25TER,
 	/* .iFunction =		DYNAMIC */
 };
 


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