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path: root/drivers/s390/scsi/zfcp_fc.c
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Diffstat (limited to 'drivers/s390/scsi/zfcp_fc.c')
-rw-r--r--drivers/s390/scsi/zfcp_fc.c33
1 files changed, 12 insertions, 21 deletions
diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c
index e984469bb98b..56196c98c07b 100644
--- a/drivers/s390/scsi/zfcp_fc.c
+++ b/drivers/s390/scsi/zfcp_fc.c
@@ -39,18 +39,6 @@ struct zfcp_gpn_ft {
struct scatterlist sg_resp[ZFCP_GPN_FT_BUFFERS];
};
-static struct zfcp_port *zfcp_get_port_by_did(struct zfcp_adapter *adapter,
- u32 d_id)
-{
- struct zfcp_port *port;
-
- list_for_each_entry(port, &adapter->port_list_head, list)
- if ((port->d_id == d_id) &&
- !atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status))
- return port;
- return NULL;
-}
-
static void _zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req, u32 range,
struct fcp_rscn_element *elem)
{
@@ -341,12 +329,13 @@ void zfcp_test_link(struct zfcp_port *port)
zfcp_port_get(port);
retval = zfcp_fc_adisc(port);
- if (retval == 0 || retval == -EBUSY)
+ if (retval == 0)
return;
/* send of ADISC was not possible */
zfcp_port_put(port);
- zfcp_erp_port_forced_reopen(port, 0, 65, NULL);
+ if (retval != -EBUSY)
+ zfcp_erp_port_forced_reopen(port, 0, 65, NULL);
}
static int zfcp_scan_get_nameserver(struct zfcp_adapter *adapter)
@@ -363,7 +352,6 @@ static int zfcp_scan_get_nameserver(struct zfcp_adapter *adapter)
if (ret)
return ret;
zfcp_erp_wait(adapter);
- zfcp_port_put(adapter->nameserver_port);
}
return !atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
&adapter->nameserver_port->status);
@@ -475,7 +463,7 @@ static int zfcp_scan_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft)
struct zfcp_adapter *adapter = ct->port->adapter;
struct zfcp_port *port, *tmp;
u32 d_id;
- int ret = 0, x;
+ int ret = 0, x, last = 0;
if (ct->status)
return -EIO;
@@ -492,19 +480,24 @@ static int zfcp_scan_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft)
down(&zfcp_data.config_sema);
/* first entry is the header */
- for (x = 1; x < ZFCP_GPN_FT_MAX_ENTRIES; x++) {
+ for (x = 1; x < ZFCP_GPN_FT_MAX_ENTRIES && !last; x++) {
if (x % (ZFCP_GPN_FT_ENTRIES + 1))
acc++;
else
acc = sg_virt(++sg);
+ last = acc->control & 0x80;
d_id = acc->port_id[0] << 16 | acc->port_id[1] << 8 |
acc->port_id[2];
/* skip the adapter's port and known remote ports */
- if (acc->wwpn == fc_host_port_name(adapter->scsi_host) ||
- zfcp_get_port_by_did(adapter, d_id))
+ if (acc->wwpn == fc_host_port_name(adapter->scsi_host))
+ continue;
+ port = zfcp_get_port_by_wwpn(adapter, acc->wwpn);
+ if (port) {
+ zfcp_port_get(port);
continue;
+ }
port = zfcp_port_enqueue(adapter, acc->wwpn,
ZFCP_STATUS_PORT_DID_DID |
@@ -513,8 +506,6 @@ static int zfcp_scan_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft)
ret = PTR_ERR(port);
else
zfcp_erp_port_reopen(port, 0, 149, NULL);
- if (acc->control & 0x80) /* last entry */
- break;
}
zfcp_erp_wait(adapter);