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H A D | e1000_mac.c | diff 94f8b882e5ef1cafe9a4e42fdb44e597e202a311 Tue May 15 15:30:59 CEST 2018 Sean Bruno <sbruno@FreeBSD.org> igb(4): I210 restore functionality if pxeboot rom is enabled on this device.
r333345 attempted to determine if this code was needed or it was some kind of work around for a problem. Turns out, its definitely a work around for hardware locking and synchronization that manifests itself if the option Rom is enabled and is selected as a boot device (there was a PXE attempt).
Reviewed by: mmacy Differential Revision: https://reviews.freebsd.org/D15439
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