From e3bc11535cdd5e26a162dbc280c2e062b7749254 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Bj=C3=B6rn=20Gerhart?= Date: Wed, 18 Feb 2015 07:19:44 +0100 Subject: [PATCH] cdc-acm: Add support for Denso cradle CU-321 commit b20b1618b8fca858c83e52da4aa22cd6b13b0359 upstream. In order to support an older USB cradle by Denso, I added its vendor- and product-ID to the array of usb_device_id acm_ids. In this way cdc-acm feels responsible for this cradle. The related /dev/ttyACM node is being created properly, and the data transfer works. However, later cradle models by Denso do have proper descriptors, so the patch is not required for these. At the same time both the older and the later model have the same vendor- and product-ID, but they both work with the patched driver. Declaration of the Denso cradles I tested: - both models have the same IDs: vendorID 0x076d, productID 0x0006 - older model: Denso CU-321 (descriptors not properly set) - later model: Denso CU-821 (with proper descriptors) Signed-off-by: Bjoern Gerhart Acked-by: Oliver Neukum Signed-off-by: Greg Kroah-Hartman Signed-off-by: Jiri Slaby --- drivers/usb/class/cdc-acm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 2574b24d70c0d..e2b4ea7fb2b19 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -1542,6 +1542,8 @@ static int acm_reset_resume(struct usb_interface *intf) static const struct usb_device_id acm_ids[] = { /* quirky and broken devices */ + { USB_DEVICE(0x076d, 0x0006), /* Denso Cradle CU-321 */ + .driver_info = NO_UNION_NORMAL, },/* has no union descriptor */ { USB_DEVICE(0x17ef, 0x7000), /* Lenovo USB modem */ .driver_info = NO_UNION_NORMAL, },/* has no union descriptor */ { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */ -- 2.47.3