[PATCH 25/28] lpfc: drop lpfc_no_handler and lpfc_bus_reset_handler()

Hannes Reinecke
2017-06-28T08:31:18Z

lpfc_bus_reset_handler() is really just a loop calling
lpfc_target_reset_handler() over all targets, which is what
the error handler will be doing anyway.
And lpfc_no_handler() will return FAILED, just like SCSI EH
does if no handler is present.

So drop both.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Cc: James Smart <james.smart@broadcom.com>
---
drivers/scsi/lpfc/lpfc_scsi.c | 99 -------------------------------------------
1 file changed, 99 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index cfe1d01..19b1202 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -5294,93 +5294,6 @@ void lpfc_poll_timeout(unsigned long ptr)
}

/**
- * lpfc_bus_reset_handler - scsi_host_template eh_bus_reset_handler entry point
- * @cmnd: Pointer to scsi_cmnd data structure.
- *
- * This routine does target reset to all targets on @cmnd->device->host.
- * This emulates Parallel SCSI Bus Reset Semantics.
- *
- * Return code :
- * 0x2003 - Error
- * 0x2002 - Success
- **/
-static int
-lpfc_bus_reset_handler(struct scsi_cmnd *cmnd)
-{
- struct Scsi_Host *shost = cmnd->device->host;
- struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
- struct lpfc_nodelist *ndlp = NULL;
- struct lpfc_scsi_event_header scsi_event;
- int match;
- int ret = SUCCESS, status, i;
-
- scsi_event.event_type = FC_REG_SCSI_EVENT;
- scsi_event.subcategory = LPFC_EVENT_BUSRESET;
- scsi_event.lun = 0;
- memcpy(scsi_event.wwpn, &vport->fc_portname, sizeof(struct lpfc_name));
- memcpy(scsi_event.wwnn, &vport->fc_nodename, sizeof(struct lpfc_name));
-
- fc_host_post_vendor_event(shost, fc_get_event_number(),
- sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID);
-
- status = fc_block_scsi_eh(cmnd);
- if (status != 0 && status != SUCCESS)
- return status;
-
- /*
- * Since the driver manages a single bus device, reset all
- * targets known to the driver. Should any target reset
- * fail, this routine returns failure to the midlayer.
- */
- for (i = 0; i < LPFC_MAX_TARGET; i++) {
- /* Search for mapped node by target ID */
- match = 0;
- spin_lock_irq(shost->host_lock);
- list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
- if (!NLP_CHK_NODE_ACT(ndlp))
- continue;
- if (vport->phba->cfg_fcp2_no_tgt_reset &&
- (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE))
- continue;
- if (ndlp->nlp_state == NLP_STE_MAPPED_NODE &&
- ndlp->nlp_sid == i &&
- ndlp->rport &&
- ndlp->nlp_type & NLP_FCP_TARGET) {
- match = 1;
- break;
- }
- }
- spin_unlock_irq(shost->host_lock);
- if (!match)
- continue;
-
- status = lpfc_send_taskmgmt(vport, cmnd,
- i, 0, FCP_TARGET_RESET);
-
- if (status != SUCCESS) {
- lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
- "0700 Bus Reset on target %d failed\n",
- i);
- ret = FAILED;
- }
- }
- /*
- * We have to clean up i/o as : they may be orphaned by the TMFs
- * above; or if any of the TMFs failed, they may be in an
- * indeterminate state.
- * We will report success if all the i/o aborts successfully.
- */
-
- status = lpfc_reset_flush_io_context(vport, 0, 0, LPFC_CTX_HOST);
- if (status != SUCCESS)
- ret = FAILED;
-
- lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP,
- "0714 SCSI layer issued Bus Reset Data: x%x\n", ret);
- return ret;
-}
-
-/**
* lpfc_host_reset_handler - scsi_host_template eh_host_reset_handler entry pt
* @cmnd: Pointer to scsi_cmnd data structure.
*
@@ -5926,11 +5839,6 @@ struct lpfc_device_data*
return SCSI_MLQUEUE_HOST_BUSY;
}

-static int
-lpfc_no_handler(struct scsi_cmnd *cmnd)
-{
- return FAILED;
-}

static int
lpfc_no_slave(struct scsi_device *sdev)
@@ -5944,11 +5852,6 @@ struct scsi_host_template lpfc_template_nvme = {
.proc_name = LPFC_DRIVER_NAME,
.info = lpfc_info,
.queuecommand = lpfc_no_command,
- .eh_abort_handler = lpfc_no_handler,
- .eh_device_reset_handler = lpfc_no_handler,
- .eh_target_reset_handler = lpfc_no_handler,
- .eh_bus_reset_handler = lpfc_no_handler,
- .eh_host_reset_handler = lpfc_no_handler,
.slave_alloc = lpfc_no_slave,
.slave_configure = lpfc_no_slave,
.scan_finished = lpfc_scan_finished,
@@ -5972,7 +5875,6 @@ struct scsi_host_template lpfc_template_no_hr = {
.eh_abort_handler = lpfc_abort_handler,
.eh_device_reset_handler = lpfc_device_reset_handler,
.eh_target_reset_handler = lpfc_target_reset_handler,
- .eh_bus_reset_handler = lpfc_bus_reset_handler,
.slave_alloc = lpfc_slave_alloc,
.slave_configure = lpfc_slave_configure,
.slave_destroy = lpfc_slave_destroy,
@@ -5998,7 +5900,6 @@ struct scsi_host_template lpfc_template = {
.eh_abort_handler = lpfc_abort_handler,
.eh_device_reset_handler = lpfc_device_reset_handler,
.eh_target_reset_handler = lpfc_target_reset_handler,
- .eh_bus_reset_handler = lpfc_bus_reset_handler,
.eh_host_reset_handler = lpfc_host_reset_handler,
.slave_alloc = lpfc_slave_alloc,
.slave_configure = lpfc_slave_configure,
--
1.8.5.6