[SCSI] libfc: Remove usage of the Scsi_Host's host_lock

This patch removes the use of the Scsi_Host's host_lock
within fc_queuecommand. It also removes the DEF_SCSI_QCMD
usage so that libfc has fully moved on to the new
queuecommand interface.

Signed-off-by: Robert Love <robert.w.love@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Reviewed-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

diff --git a/drivers/scsi/libfc/fc_fcp.c b/drivers/scsi/libfc/fc_fcp.c
index 383a982..b1b03af 100644 (file)
--- a/drivers/scsi/libfc/fc_fcp.c
+++ b/drivers/scsi/libfc/fc_fcp.c
@@ -1789,15 +1789,14 @@ static inline int fc_fcp_lport_queue_ready(struct fc_lport *lport)
 
 /**
  * fc_queuecommand() - The queuecommand function of the SCSI template
+ * @shost: The Scsi_Host that the command was issued to
  * @cmd:   The scsi_cmnd to be executed
- * @done:  The callback function to be called when the scsi_cmnd is complete
  *
- * This is the i/o strategy routine, called by the SCSI layer. This routine
- * is called with the host_lock held.
+ * This is the i/o strategy routine, called by the SCSI layer.
  */
-static int fc_queuecommand_lck(struct scsi_cmnd *sc_cmd, void (*done)(struct scsi_cmnd *))
+int fc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *sc_cmd)
 {
-       struct fc_lport *lport;
+       struct fc_lport *lport = shost_priv(shost);
        struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
        struct fc_fcp_pkt *fsp;
        struct fc_rport_libfc_priv *rpriv;
@@ -1805,15 +1804,12 @@ static int fc_queuecommand_lck(struct scsi_cmnd *sc_cmd, void (*done)(struct scs
        int rc = 0;
        struct fcoe_dev_stats *stats;
 
-       lport = shost_priv(sc_cmd->device->host);
-
        rval = fc_remote_port_chkready(rport);
        if (rval) {
                sc_cmd->result = rval;
-               done(sc_cmd);
+               sc_cmd->scsi_done(sc_cmd);
                return 0;
        }
-       spin_unlock_irq(lport->host->host_lock);
 
        if (!*(struct fc_remote_port **)rport->dd_data) {
                /*
@@ -1821,7 +1817,7 @@ static int fc_queuecommand_lck(struct scsi_cmnd *sc_cmd, void (*done)(struct scs
                 * online
                 */
                sc_cmd->result = DID_IMM_RETRY << 16;
-               done(sc_cmd);
+               sc_cmd->scsi_done(sc_cmd);
                goto out;
        }
 
@@ -1845,7 +1841,6 @@ static int fc_queuecommand_lck(struct scsi_cmnd *sc_cmd, void (*done)(struct scs
         */
        fsp->cmd = sc_cmd;      /* save the cmd */
        fsp->rport = rport;     /* set the remote port ptr */
-       sc_cmd->scsi_done = done;
 
        /*
         * set up the transfer length
@@ -1886,11 +1881,8 @@ static int fc_queuecommand_lck(struct scsi_cmnd *sc_cmd, void (*done)(struct scs
                rc = SCSI_MLQUEUE_HOST_BUSY;
        }
 out:
-       spin_lock_irq(lport->host->host_lock);
        return rc;
 }
-
-DEF_SCSI_QCMD(fc_queuecommand)
 EXPORT_SYMBOL(fc_queuecommand);
 
 /**