From 5b64a9a1a8b8ea949a15647fd4b991c89e37611d Mon Sep 17 00:00:00 2001 From: Iain McFarlane Date: Wed, 14 May 2008 19:21:19 +0000 Subject: [PATCH] USB: add Zoom Telephonics Model 3095F V.92 USB Mini External modem to cdc-acm commit 6149ed5e3a6207595bd7362af7724d64f44af216 upstream 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 Acked-by: Oliver Neukum Signed-off-by: Greg Kroah-Hartman Signed-off-by: Chris Wright --- drivers/usb/class/cdc-acm.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 0147ea39340e2..d8160faabb9d2 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -1242,6 +1242,9 @@ static struct usb_device_id acm_ids[] = { { 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, -- 2.47.2