[SCSI] scsi_transport_sas: kill the use of channel

Using the port_id for the channel is completely unnecessary since the
host_id/target_id are constructed to be globally unique.  Also move
the mptsas driver on to virtual channel 1 for its raid devices.

Acked-by: "Moore, Eric" <Eric.Moore@lsil.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 21 insertions, 35 deletions

diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index 0fb7d5881f4f..b28e930528e8 100644
--- a/drivers/message/fusion/mptsas.c
+++ b/drivers/message/fusion/mptsas.c
@@ -67,6 +67,11 @@
 #define my_VERSION      MPT_LINUX_VERSION_COMMON
 #define MYNAM           "mptsas"
 
+/*
+ * Reserved channel for integrated raid
+ */
+#define MPTSAS_RAID_CHANNEL     1
+
 MODULE_AUTHOR(MODULEAUTHOR);
 MODULE_DESCRIPTION(my_NAME);
 MODULE_LICENSE("GPL");
@@ -644,16 +649,13 @@ mptsas_sas_enclosure_pg0(MPT_ADAPTER *ioc, struct mptsas_enclosure *enclosure,
 static int
 mptsas_slave_configure(struct scsi_device *sdev)
 {
-        struct Scsi_Host        *host = sdev->host;
-        MPT_SCSI_HOST           *hd = (MPT_SCSI_HOST *)host->hostdata;
 
-        /*
-         * RAID volumes placed beyond the last expected port.
-         * Ignore sending sas mode pages in that case..
-         */
-        if (sdev->channel < hd->ioc->num_ports)
-                sas_read_port_mode_page(sdev);
+        if (sdev->channel == MPTSAS_RAID_CHANNEL)
+                goto out;
+
+        sas_read_port_mode_page(sdev);
 
+ out:
         return mptscsih_slave_configure(sdev);
 }
 
@@ -682,10 +684,7 @@ mptsas_target_alloc(struct scsi_target *starget)
 
         hd->Targets[target_id] = vtarget;
 
-        /*
-         * RAID volumes placed beyond the last expected port.
-         */
-        if (starget->channel == hd->ioc->num_ports)
+        if (starget->channel == MPTSAS_RAID_CHANNEL)
                 goto out;
 
         rphy = dev_to_rphy(starget->dev.parent);
@@ -736,7 +735,7 @@ mptsas_target_destroy(struct scsi_target *starget)
         if (!starget->hostdata)
                 return;
 
-        if (starget->channel == hd->ioc->num_ports)
+        if (starget->channel == MPTSAS_RAID_CHANNEL)
                 goto out;
 
         rphy = dev_to_rphy(starget->dev.parent);
@@ -776,10 +775,7 @@ mptsas_slave_alloc(struct scsi_device *sdev)
         starget = scsi_target(sdev);
         vdev->vtarget = starget->hostdata;
 
-        /*
-         * RAID volumes placed beyond the last expected port.
-         */
-        if (sdev->channel == hd->ioc->num_ports)
+        if (sdev->channel == MPTSAS_RAID_CHANNEL)
                 goto out;
 
         rphy = dev_to_rphy(sdev->sdev_target->dev.parent);
@@ -1728,7 +1724,6 @@ mptsas_probe_hba_phys(MPT_ADAPTER *ioc)
                 hba = NULL;
         }
         mutex_unlock(&ioc->sas_topology_mutex);
-        ioc->num_ports = port_info->num_phys;
 
         for (i = 0; i < port_info->num_phys; i++) {
                 mptsas_sas_phy_pg0(ioc, &port_info->phy_info[i],
@@ -1977,7 +1972,7 @@ mptsas_scan_sas_topology(MPT_ADAPTER *ioc)
         if (!ioc->raid_data.pIocPg2->NumActiveVolumes)
                 goto out;
         for (i=0; i<ioc->raid_data.pIocPg2->NumActiveVolumes; i++) {
-                scsi_add_device(ioc->sh, ioc->num_ports,
+                scsi_add_device(ioc->sh, MPTSAS_RAID_CHANNEL,
                     ioc->raid_data.pIocPg2->RaidVolume[i].VolumeID, 0);
         }
  out:
@@ -2283,35 +2278,26 @@ mptsas_hotplug_work(void *arg)
                 mptsas_set_rphy(phy_info, rphy);
                 break;
         case MPTSAS_ADD_RAID:
-                sdev = scsi_device_lookup(
-                        ioc->sh,
-                        ioc->num_ports,
-                        ev->id,
-                        0);
+                sdev = scsi_device_lookup(ioc->sh, MPTSAS_RAID_CHANNEL,
+                    ev->id, 0);
                 if (sdev) {
                         scsi_device_put(sdev);
                         break;
                 }
                 printk(MYIOC_s_INFO_FMT
                        "attaching raid volume, channel %d, id %d\n",
-                       ioc->name, ioc->num_ports, ev->id);
-                scsi_add_device(ioc->sh,
-                        ioc->num_ports,
-                        ev->id,
-                        0);
+                       ioc->name, MPTSAS_RAID_CHANNEL, ev->id);
+                scsi_add_device(ioc->sh, MPTSAS_RAID_CHANNEL, ev->id, 0);
                 mpt_findImVolumes(ioc);
                 break;
         case MPTSAS_DEL_RAID:
-                sdev = scsi_device_lookup(
-                        ioc->sh,
-                        ioc->num_ports,
-                        ev->id,
-                        0);
+                sdev = scsi_device_lookup(ioc->sh, MPTSAS_RAID_CHANNEL,
+                    ev->id, 0);
                 if (!sdev)
                         break;
                 printk(MYIOC_s_INFO_FMT
                        "removing raid volume, channel %d, id %d\n",
-                       ioc->name, ioc->num_ports, ev->id);
+                       ioc->name, MPTSAS_RAID_CHANNEL, ev->id);
                 vdevice = sdev->hostdata;
                 vdevice->vtarget->deleted = 1;
                 mptsas_target_reset(ioc, vdevice->vtarget);