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70509e6a03
It is possible for the preloaded UNDI device to end up with no specified bus type, since it may not be recognised as either a PCI or an ISAPnP device. This will result in a bus type value of zero, which currently results in NULL being treated as a string pointer by netdev_fetch_bustype(). Fix by returning ENOENT if an unknown bus type is specified. Reported-by: Todd Stansell <todd@stansell.org> Signed-off-by: Michael Brown <mcb30@ipxe.org>
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