diff options
Diffstat (limited to 'drivers/s390/scsi/zfcp_erp.c')
| -rw-r--r-- | drivers/s390/scsi/zfcp_erp.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index 283bcb985655..db320dab1fee 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -14,6 +14,7 @@ #include <linux/bug.h> #include "zfcp_ext.h" #include "zfcp_reqlist.h" +#include "zfcp_diag.h" #define ZFCP_MAX_ERPS 3 @@ -804,6 +805,59 @@ static enum zfcp_erp_act_result zfcp_erp_adapter_strategy_open_fsf_xport( return ZFCP_ERP_SUCCEEDED; } +static enum zfcp_erp_act_result +zfcp_erp_adapter_strategy_alloc_shost(struct zfcp_adapter *const adapter) +{ + struct zfcp_diag_adapter_config_data *const config_data = + &adapter->diagnostics->config_data; + struct zfcp_diag_adapter_port_data *const port_data = + &adapter->diagnostics->port_data; + unsigned long flags; + int rc; + + rc = zfcp_scsi_adapter_register(adapter); + if (rc == -EEXIST) + return ZFCP_ERP_SUCCEEDED; + else if (rc) + return ZFCP_ERP_FAILED; + + /* + * We allocated the shost for the first time. Before it was NULL, + * and so we deferred all updates in the xconf- and xport-data + * handlers. We need to make up for that now, and make all the updates + * that would have been done before. + * + * We can be sure that xconf- and xport-data succeeded, because + * otherwise this function is not called. But they might have been + * incomplete. + */ + + spin_lock_irqsave(&config_data->header.access_lock, flags); + zfcp_scsi_shost_update_config_data(adapter, &config_data->data, + !!config_data->header.incomplete); + spin_unlock_irqrestore(&config_data->header.access_lock, flags); + + if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) { + spin_lock_irqsave(&port_data->header.access_lock, flags); + zfcp_scsi_shost_update_port_data(adapter, &port_data->data); + spin_unlock_irqrestore(&port_data->header.access_lock, flags); + } + + /* + * There is a remote possibility that the 'Exchange Port Data' request + * reports a different connectivity status than 'Exchange Config Data'. + * But any change to the connectivity status of the local optic that + * happens after the initial xconf request is expected to be reported + * to us, as soon as we post Status Read Buffers to the FCP channel + * firmware after this function. So any resulting inconsistency will + * only be momentary. + */ + if (config_data->header.incomplete) + zfcp_fsf_fc_host_link_down(adapter); + + return ZFCP_ERP_SUCCEEDED; +} + static enum zfcp_erp_act_result zfcp_erp_adapter_strategy_open_fsf( struct zfcp_erp_action *act) { @@ -813,6 +867,10 @@ static enum zfcp_erp_act_result zfcp_erp_adapter_strategy_open_fsf( if (zfcp_erp_adapter_strategy_open_fsf_xport(act) == ZFCP_ERP_FAILED) return ZFCP_ERP_FAILED; + if (zfcp_erp_adapter_strategy_alloc_shost(act->adapter) == + ZFCP_ERP_FAILED) + return ZFCP_ERP_FAILED; + zfcp_erp_adapter_strategy_open_ptp_port(act->adapter); if (mempool_resize(act->adapter->pool.sr_data, |