fusion: Remove use of DEF_SCSI_QCMD

Removing the host_lock from the I/O submission path gives a huge
scalability improvement.

Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Reviewed-by: Nicholas Bellinger <nab@linux-iscsi.org>
Reviewed-by: Praveen Krishnamoorthy <Praveen.krishnamoorthy@lsi.com>
Acked-by: Sreekanth Reddy <Sreekanth.reddy@lsi.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

1 files changed, 5 insertions, 7 deletions

diff --git a/drivers/message/fusion/mptspi.c b/drivers/message/fusion/mptspi.c
index 5653e505f91f..49d11338294b 100644
--- a/drivers/message/fusion/mptspi.c
+++ b/drivers/message/fusion/mptspi.c
@@ -780,33 +780,31 @@ static int mptspi_slave_configure(struct scsi_device *sdev)
 }
 
 static int
-mptspi_qcmd_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
+mptspi_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *SCpnt)
 {
-        struct _MPT_SCSI_HOST *hd = shost_priv(SCpnt->device->host);
+        struct _MPT_SCSI_HOST *hd = shost_priv(shost);
         VirtDevice      *vdevice = SCpnt->device->hostdata;
         MPT_ADAPTER *ioc = hd->ioc;
 
         if (!vdevice || !vdevice->vtarget) {
                 SCpnt->result = DID_NO_CONNECT << 16;
-                done(SCpnt);
+                SCpnt->scsi_done(SCpnt);
                 return 0;
         }
 
         if (SCpnt->device->channel == 1 &&
                 mptscsih_is_phys_disk(ioc, 0, SCpnt->device->id) == 0) {
                 SCpnt->result = DID_NO_CONNECT << 16;
-                done(SCpnt);
+                SCpnt->scsi_done(SCpnt);
                 return 0;
         }
 
         if (spi_dv_pending(scsi_target(SCpnt->device)))
                 ddvprintk(ioc, scsi_print_command(SCpnt));
 
-        return mptscsih_qcmd(SCpnt,done);
+        return mptscsih_qcmd(SCpnt);
 }
 
-static DEF_SCSI_QCMD(mptspi_qcmd)
-
 static void mptspi_slave_destroy(struct scsi_device *sdev)
 {
         struct scsi_target *starget = scsi_target(sdev);