a58536b91a
Add sysctl/tunable to control Electromechanical Interlock support. Disable it by default since Linux does not do it either and it seems the number of systems having it broken is higher than having working. This fixes NVMe backplane operation on ASUS RS500A-E11-RS12U server with AMD EPYC 7402 CPU, where attempts to control reported interlock for some reason end up in PCIe link loss, while interlock status does not change (it is not really there). MFC after: 2 weeks |
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