USB: add Zoom Telephonics Model 3095F V.92 USB Mini External modem to cdc-acm The patch below is a necessary workaround to support the Zoom Telephonics Model 3095F V.92 USB Mini External modem, which fails to initialise properly during normal probing thus: May 3 22:53:00 imcfarla kernel: drivers/usb/class/cdc-acm.c: Zero length descriptor references May 3 22:53:00 imcfarla kernel: cdc_acm: probe of 5-2:1.0 failed with error -22 Adding the patch below causes the probing section to be skipped, and the modem then initialises correctly. Signed-off-by: Iain McFarlane <iain@imcfarla.homelinux.net> Acked-by: Oliver Neukum <oneukum@suse.de> 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 cefe7f2..63c3404 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c
@@ -1248,6 +1248,9 @@ { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */ .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ }, + { USB_DEVICE(0x0803, 0x3095), /* Zoom Telephonics Model 3095F USB MODEM */ + .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ + }, /* control interfaces with various AT-command sets */ { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,