linux-kernel - [049/129] USB: cdc-acm: Add pseudo modem without AT command capabilities

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Date:	Sat, 18 Sep 2010 12:12:27 -0700
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,
	Philippe Corbes <philippe.corbes@...il.com>
Subject: [049/129] USB: cdc-acm: Add pseudo modem without AT command capabilities

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

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

From: Philippe Corbes <philippe.corbes@...il.com>

commit 5b239f0aebd4dd6f85b13decf5e18e86e35d57f0 upstream.

cdc-acm.c : Manage pseudo-modem without AT commands capabilities
  Enable to drive electronic simple gadgets based on microcontrolers.
  The Interface descriptor is like this:
    bInterfaceClass         2 Communications
    bInterfaceSubClass      2 Abstract (modem)
    bInterfaceProtocol      0 None

Signed-off-by: Philippe Corbes <philippe.corbes@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/usb/class/cdc-acm.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1621,6 +1621,10 @@ static const struct usb_device_id acm_id
 	.driver_info = NOT_A_MODEM,
        	},
 
+	/* control interfaces without any protocol set */
+	{ USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
+		USB_CDC_PROTO_NONE) },
+
 	/* control interfaces with various AT-command sets */
 	{ USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
 		USB_CDC_ACM_PROTO_AT_V25TER) },


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