USB: cdc-acm: Add pseudo modem without AT command capabilities
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@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index a3d6c4d..597defc 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1615,6 +1615,10 @@
.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) },