Messages in this thread | | | Date | Wed, 27 Jun 2007 02:20:12 +1200 | From | "Keith Chew" <> | Subject | usb_fill_bulk_urb() broken for USB1.1? |
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Hi
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.
Regards Keith - 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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