ncr5380: Remove FLAG_NO_PSEUDO_DMA where possible

Drivers that define PSEUDO_DMA also define NCR5380_dma_xfer_len.
The core driver must call NCR5380_dma_xfer_len which means
FLAG_NO_PSEUDO_DMA can be eradicated from the core driver.

dmx3191d doesn't define PSEUDO_DMA and has no use for FLAG_NO_PSEUDO_DMA,
so remove it there also.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Michael Schmitz <schmitzmic@gmail.com>
Tested-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

1 files changed, 14 insertions, 1 deletions

diff --git a/drivers/scsi/mac_scsi.c b/drivers/scsi/mac_scsi.c
index bb2381314a2b..a8f5433b515e 100644
--- a/drivers/scsi/mac_scsi.c
+++ b/drivers/scsi/mac_scsi.c
@@ -37,7 +37,9 @@
 
 #define NCR5380_pread                   macscsi_pread
 #define NCR5380_pwrite                  macscsi_pwrite
-#define NCR5380_dma_xfer_len(instance, cmd, phase)	(cmd->transfersize)
+
+#define NCR5380_dma_xfer_len(instance, cmd, phase) \
+        macscsi_dma_xfer_len(instance, cmd)
 
 #define NCR5380_intr                    macscsi_intr
 #define NCR5380_queue_command           macscsi_queue_command
@@ -303,6 +305,17 @@ static int macscsi_pwrite(struct Scsi_Host *instance,
 }
 #endif
 
+static int macscsi_dma_xfer_len(struct Scsi_Host *instance,
+                                struct scsi_cmnd *cmd)
+{
+	struct NCR5380_hostdata *hostdata = shost_priv(instance);
+
+	if (hostdata->flags & FLAG_NO_PSEUDO_DMA)
+		return 0;
+
+	return cmd->transfersize;
+}
+
 #include "NCR5380.c"
 
 #define DRV_MODULE_NAME         "mac_scsi"