USB: cdc_acm: Silence "It is not a modem." error for pbLua devices
The pbLua console port is known to not be a modem, so it is
unnecessary to be told this when it is plugged in.
Add NOT_A_MODEM quirk to tell the driver that we know this already
and hence not to warn us, and mark the pbLua console port.
Signed-off-by: Julian Calaby <julian.calaby@gmail.com>
Cc: Oliver Neukum <oliver@neukum.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 d071da9..95f29a2 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1010,7 +1010,7 @@
case USB_CDC_CALL_MANAGEMENT_TYPE:
call_management_function = buffer[3];
call_interface_num = buffer[4];
- if ((call_management_function & 3) != 3)
+ if ( (quirks & NOT_A_MODEM) == 0 && (call_management_function & 3) != 3)
dev_err(&intf->dev, "This device cannot do calls on its own. It is not a modem.\n");
break;
default:
@@ -1595,7 +1595,9 @@
/* NOTE: non-Nokia COMM/ACM/0xff is likely MSFT RNDIS... NOT a modem! */
/* Support Lego NXT using pbLua firmware */
- { USB_DEVICE(0x0694, 0xff00), },
+ { USB_DEVICE(0x0694, 0xff00),
+ .driver_info = NOT_A_MODEM,
+ },
/* control interfaces with various AT-command sets */
{ USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,