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| author | Swen Schillig <swen@vnet.ibm.com> | 2008-08-21 13:43:35 +0200 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-08-29 09:04:35 -0500 |
| commit | 9528539cc2d506aa232b0d93881ac4d19738752f (patch) | |
| tree | 5f14bde1d4798c281a6fb587d8fce0c0a16dab5d /drivers | |
| parent | f48bf7fb00f74d93105ba69522a3f6c9435d6af3 (diff) | |
| download | linux-9528539cc2d506aa232b0d93881ac4d19738752f.tar.gz linux-9528539cc2d506aa232b0d93881ac4d19738752f.tar.bz2 linux-9528539cc2d506aa232b0d93881ac4d19738752f.zip | |
[SCSI] zfcp: Fix reference counter for remote ports
Fix the remote port reference counter handling during ELS ADISC
commands and find the remote port by WWPN not by D_IDs that could
change.
Signed-off-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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/s390/scsi/zfcp_fc.c | 25 |
1 files changed, 9 insertions, 16 deletions
diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c index 27edabe5b20a..05e6b09c48f3 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) @@ -503,9 +492,13 @@ static int zfcp_scan_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft) 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 | |