On 09.11.2012 15:43, Oliver Neukum wrote:
On Friday 09 November 2012 14:42:24 Markus Kolb wrote:
[...]
I've found e.g.
URB_NO_INTERRUPT and USBDEVFS_URB_NO_INTERRUPT in
http://code.metager.de/source/xref/linux/stable/drivers/usb/core/devio.c#1386
but how do I set this?
You don't. This is for usbfs. If your modem cannot handle status
transfers it makes no sense to use cdc-acm. You better blacklist the
device and use usb-serial.
Ok. Should the vendor_id/product_id combination be blacklisted in
cdc-acm?
I think the device is detected for cdc-acm because of
http://code.metager.de/source/xref/linux/stable/drivers/usb/class/cdc-acm.c#1653
1653 /* control interfaces without any protocol set */
1654 { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
1655 USB_CDC_PROTO_NONE) },
Or is udev the right place to handle buggy descriptors?
Thanks
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