static uint32_t set_allocation_state(sPAPRDRConnector *drc, sPAPRDRAllocationState state) { sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); trace_spapr_drc_set_allocation_state(get_index(drc), state); if (state == SPAPR_DR_ALLOCATION_STATE_USABLE) { /* if there's no resource/device associated with the DRC, there's * no way for us to put it in an allocation state consistent with * being 'USABLE'. PAPR 2.7, 13.5.3.4 documents that this should * result in an RTAS return code of -3 / "no such indicator" */ if (!drc->dev) { return RTAS_OUT_NO_SUCH_INDICATOR; } if (drc->awaiting_release && drc->awaiting_allocation) { /* kernel is acknowledging a previous hotplug event * while we are already removing it. * it's safe to ignore awaiting_allocation here since we know the * situation is predicated on the guest either already having done * so (boot-time hotplug), or never being able to acquire in the * first place (hotplug followed by immediate unplug). */ drc->awaiting_allocation_skippable = true; return RTAS_OUT_NO_SUCH_INDICATOR; } } if (drc->type != SPAPR_DR_CONNECTOR_TYPE_PCI) { drc->allocation_state = state; if (drc->awaiting_release && drc->allocation_state == SPAPR_DR_ALLOCATION_STATE_UNUSABLE) { trace_spapr_drc_set_allocation_state_finalizing(get_index(drc)); drck->detach(drc, DEVICE(drc->dev), drc->detach_cb, drc->detach_cb_opaque, NULL); } else if (drc->allocation_state == SPAPR_DR_ALLOCATION_STATE_USABLE) { drc->awaiting_allocation = false; } } return RTAS_OUT_SUCCESS; }