[SCSI] libiscsi: Drop host lock in queuecommand

The driver does not need the host lock in queuecommand so drop it.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index 4461317e617f..b0bc8c3b0ecb 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -1010,8 +1010,9 @@ int iscsi_queuecommand(struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
         sc->SCp.ptr = NULL;
 
         host = sc->device->host;
-        session = iscsi_hostdata(host->hostdata);
+        spin_unlock(host->host_lock);
 
+        session = iscsi_hostdata(host->hostdata);
         spin_lock(&session->lock);
 
         /*
@@ -1077,11 +1078,13 @@ int iscsi_queuecommand(struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *))
         spin_unlock(&session->lock);
 
         scsi_queue_work(host, &conn->xmitwork);
+        spin_lock(host->host_lock);
         return 0;
 
 reject:
         spin_unlock(&session->lock);
         debug_scsi("cmd 0x%x rejected (%d)\n", sc->cmnd[0], reason);
+        spin_lock(host->host_lock);
         return SCSI_MLQUEUE_HOST_BUSY;
 
 fault:
@@ -1091,6 +1094,7 @@ fault:
         sc->result = (DID_NO_CONNECT << 16);
         scsi_set_resid(sc, scsi_bufflen(sc));
         sc->scsi_done(sc);
+        spin_lock(host->host_lock);
         return 0;
 }
 EXPORT_SYMBOL_GPL(iscsi_queuecommand);