From dc577d554a274b79a6ad05e9e1ac20c320200599 Mon Sep 17 00:00:00 2001
From: Christof Schmitt <christof.schmitt@de.ibm.com>
Date: Fri, 15 May 2009 13:18:22 +0200
Subject: [PATCH] [SCSI] zfcp: Update FC pass-through support
Don't access the block layer request, get the payload length instead
from the FC job. Simplify access to the zfcp_port, only the d_id is
required, if the port is no longer accessed later. This is possible
when the els_handler does not access the port pointer from the ELS
request.
Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
---
drivers/s390/scsi/zfcp_fc.c | 9 +++------
drivers/s390/scsi/zfcp_fsf.c | 3 ++-
2 files changed, 5 insertions(+), 7 deletions(-)
diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c
index da10e0df6879..538c68dc7bb8 100644
--- a/drivers/s390/scsi/zfcp_fc.c
+++ b/drivers/s390/scsi/zfcp_fc.c
@@ -704,7 +704,7 @@ static void zfcp_fc_generic_els_handler(unsigned long data)
}
reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
- reply->reply_payload_rcv_len = blk_rq_bytes(job->req->next_rq);
+ reply->reply_payload_rcv_len = job->reply_payload.payload_len;
out:
job->state_flags = FC_RQST_STATE_DONE;
@@ -736,15 +736,12 @@ int zfcp_fc_execute_els_fc_job(struct fc_bsg_job *job)
read_lock_irq(&zfcp_data.config_lock);
port = rport->dd_data;
if (port)
- zfcp_port_get(port);
+ els_fc_job->els.d_id = port->d_id;
read_unlock_irq(&zfcp_data.config_lock);
if (!port) {
kfree(els_fc_job);
return -EINVAL;
}
- els_fc_job->els.port = port;
- els_fc_job->els.d_id = port->d_id;
- zfcp_port_put(port);
} else {
port_did = job->request->rqst_data.h_els.port_id;
els_fc_job->els.d_id = (port_did[0] << 16) +
@@ -772,8 +769,8 @@ static void zfcp_fc_generic_ct_handler(unsigned long data)
job->reply->reply_data.ctels_reply.status = ct_fc_job->ct.status ?
FC_CTELS_STATUS_REJECT : FC_CTELS_STATUS_OK;
+ job->reply->reply_payload_rcv_len = job->reply_payload.payload_len;
job->state_flags = FC_RQST_STATE_DONE;
- job->reply->reply_payload_rcv_len = blk_rq_bytes(job->req->next_rq);
job->job_done(job);
zfcp_wka_port_put(ct_fc_job->ct.wka_port);
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index e6dae3744e79..c57658f3d34f 100644
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -1146,7 +1146,8 @@ static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req)
case FSF_RESPONSE_SIZE_TOO_LARGE:
break;
case FSF_ACCESS_DENIED:
- zfcp_fsf_access_denied_port(req, port);
+ if (port)
+ zfcp_fsf_access_denied_port(req, port);
break;
case FSF_SBAL_MISMATCH:
/* should never occure, avoided in zfcp_fsf_send_els */
--
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