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Michael Brown 88288407af [usb] Move usbio driver to end of USB driver list 
iPXE will often have multiple drivers available for a USB device.  For
example: some USB network devices will support both RNDIS and CDC-ECM,
and any device may be consumed by the fallback "usbio" driver under
UEFI in order to expose an EFI_USB_IO_PROTOCOL instance.

The driver scoring mechanism is used to select a device configuration
based on the availability of drivers for the interfaces exposed in
each configuration.

For the case of RNDIS versus CDC-ECM, this mechanism will always
produce the correct result since RNDIS and CDC-ECM will not exist
within the same configuration and so each configuration will receive a
score based on the relevant driver.

This guarantee does not hold for the "usbio" driver, which will match
against any device.  It is a surprising coincidence that the "usbio"
driver seems to usually end up at the tail end of the USB drivers
list, thereby resulting in the expected behaviour.

Guarantee the expected behaviour by explicitly placing the "usbio"
driver at the end of the USB drivers list.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
 		2020-10-13 15:56:38 +01:00
contrib [coverity] Override assumptions about wcrtomb() and hmac_init() 2019-08-17 17:18:54 +01:00
src [usb] Move usbio driver to end of USB driver list 2020-10-13 15:56:38 +01:00
.travis.yml [travis] Ensure that most recent tag is always available 2020-01-03 00:14:03 +01:00
COPYING [legal] Update GPLv2 licence text 2015-02-26 17:59:53 +00:00
COPYING.GPLv2 [legal] Update GPLv2 licence text 2015-02-26 17:59:53 +00:00
COPYING.UBDL [legal] Add support for the Unmodified Binary Distribution Licence 2015-03-02 12:07:14 +00:00
README [doc] Re-add README file 2010-05-28 00:03:47 +01:00

README 

iPXE README File

Quick start guide:

   cd src
   make

For any more detailed instructions, see http://ipxe.org