Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This series consists of the usual driver updates (qla2xxx, pm8001,
  libsas, smartpqi, scsi_debug, lpfc, iscsi, mpi3mr) plus minor updates
  and bug fixes.

  The high blast radius core update is the removal of write same, which
  affects block and several non-SCSI devices. The other big change,
  which is more local, is the removal of the SCSI pointer"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (281 commits)
  scsi: scsi_ioctl: Drop needless assignment in sg_io()
  scsi: bsg: Drop needless assignment in scsi_bsg_sg_io_fn()
  scsi: lpfc: Copyright updates for 14.2.0.0 patches
  scsi: lpfc: Update lpfc version to 14.2.0.0
  scsi: lpfc: SLI path split: Refactor BSG paths
  scsi: lpfc: SLI path split: Refactor Abort paths
  scsi: lpfc: SLI path split: Refactor SCSI paths
  scsi: lpfc: SLI path split: Refactor CT paths
  scsi: lpfc: SLI path split: Refactor misc ELS paths
  scsi: lpfc: SLI path split: Refactor VMID paths
  scsi: lpfc: SLI path split: Refactor FDISC paths
  scsi: lpfc: SLI path split: Refactor LS_RJT paths
  scsi: lpfc: SLI path split: Refactor LS_ACC paths
  scsi: lpfc: SLI path split: Refactor the RSCN/SCR/RDF/EDC/FARPR paths
  scsi: lpfc: SLI path split: Refactor PLOGI/PRLI/ADISC/LOGO paths
  scsi: lpfc: SLI path split: Refactor base ELS paths and the FLOGI path
  scsi: lpfc: SLI path split: Introduce lpfc_prep_wqe
  scsi: lpfc: SLI path split: Refactor fast and slow paths to native SLI4
  scsi: lpfc: SLI path split: Refactor lpfc_iocbq
  scsi: lpfc: Use kcalloc()
  ...

1 files changed, 12 insertions, 10 deletions

diff --git a/drivers/scsi/ncr53c8xx.c b/drivers/scsi/ncr53c8xx.c
index fc8abe05fa8f..4458449c960b 100644
--- a/drivers/scsi/ncr53c8xx.c
+++ b/drivers/scsi/ncr53c8xx.c
@@ -514,30 +514,29 @@ static m_addr_t __vtobus(m_bush_t bush, void *m)
  *  Deal with DMA mapping/unmapping.
  */
 
-/* To keep track of the dma mapping (sg/single) that has been set */
-#define __data_mapped	SCp.phase
-#define __data_mapping	SCp.have_data_in
-
 static void __unmap_scsi_data(struct device *dev, struct scsi_cmnd *cmd)
 {
-	switch(cmd->__data_mapped) {
+	struct ncr_cmd_priv *cmd_priv = scsi_cmd_priv(cmd);
+
+	switch(cmd_priv->data_mapped) {
 	case 2:
 		scsi_dma_unmap(cmd);
 		break;
 	}
-	cmd->__data_mapped = 0;
+	cmd_priv->data_mapped = 0;
 }
 
 static int __map_scsi_sg_data(struct device *dev, struct scsi_cmnd *cmd)
 {
+	struct ncr_cmd_priv *cmd_priv = scsi_cmd_priv(cmd);
 	int use_sg;
 
 	use_sg = scsi_dma_map(cmd);
 	if (!use_sg)
 		return 0;
 
-	cmd->__data_mapped = 2;
-	cmd->__data_mapping = use_sg;
+	cmd_priv->data_mapped = 2;
+	cmd_priv->data_mapping = use_sg;
 
 	return use_sg;
 }
@@ -7854,6 +7853,7 @@ static int ncr53c8xx_slave_configure(struct scsi_device *device)
 
 static int ncr53c8xx_queue_command_lck(struct scsi_cmnd *cmd)
 {
+     struct ncr_cmd_priv *cmd_priv = scsi_cmd_priv(cmd);
      void (*done)(struct scsi_cmnd *) = scsi_done;
      struct ncb *np = ((struct host_data *) cmd->device->host->hostdata)->ncb;
      unsigned long flags;
@@ -7864,8 +7864,8 @@ printk("ncr53c8xx_queue_command\n");
 #endif
 
      cmd->host_scribble = NULL;
-     cmd->__data_mapped = 0;
-     cmd->__data_mapping = 0;
+     cmd_priv->data_mapped = 0;
+     cmd_priv->data_mapping = 0;
 
      spin_lock_irqsave(&np->smp_lock, flags);
 
@@ -8085,6 +8085,8 @@ struct Scsi_Host * __init ncr_attach(struct scsi_host_template *tpnt,
 	u_long flags = 0;
 	int i;
 
+	WARN_ON_ONCE(tpnt->cmd_size < sizeof(struct ncr_cmd_priv));
+
 	if (!tpnt->name)
 		tpnt->name	= SCSI_NCR_DRIVER_NAME;
 	if (!tpnt->shost_groups)