Messages in this thread | | | Date | Tue, 26 Jun 2007 13:52:41 -0400 | From | Chuck Ebbert <> | Subject | Re: usb_fill_bulk_urb() broken for USB1.1? |
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On 06/26/2007 10:20 AM, Keith Chew wrote:
[cc: linux-usb-devel]
> We have been using a Zydas based WIFI drivers under kernel 2.6.16.18 > with great success. Recently, when we upgraded to 2.6.20.1 (also > tested on 2.6.21.5), we found that during initialisation, these calls > works with USB2.0 but stopped working on USB1.1: > > usb_fill_bulk_urb(); > usb_submit_urb(); > > The error code returned is -22 (-EINVAL). In 2.6.16.18, it works for > both USB2.0 and 1.1. > > When we change to use usb_fill_int_urb(), it then works for USB1.1, > but takes up to 15 seconds (usually less than 5 seconds) for the > driver to initialise. Also, usb_fill_int_urb() does not work for > USB2.0 (kernel panic). > > Can anyone point us to the right direction on how to get > usb_fill_bulk_urb() working on USB1.1? We need this as not all of the > deployed machines have USB2.0 enabled. > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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