[SCSI] qla2xxx: Convert vport_sem to a mutex

The semaphore vport_sem is used as a mutex.  Convert it to the
mutex API.

Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net>
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index 2100604..3800876 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -2807,9 +2807,9 @@
 	 */
 	map = (vp_index - 1) / 8;
 	pos = (vp_index - 1) & 7;
-	down(&ha->vport_sem);
+	mutex_lock(&ha->vport_lock);
 	vce->vp_idx_map[map] |= 1 << pos;
-	up(&ha->vport_sem);
+	mutex_unlock(&ha->vport_lock);
 
 	rval = qla2x00_issue_iocb(ha, vce, vce_dma, 0);
 	if (rval != QLA_SUCCESS) {