summaryrefslogtreecommitdiff
path: root/drivers/scsi/sun3_scsi.c
diff options
context:
space:
mode:
authorFinn Thain <fthain@telegraphics.com.au>2016-03-23 21:10:13 +1100
committerMartin K. Petersen <martin.petersen@oracle.com>2016-04-11 16:57:09 -0400
commite63449c43a58fc185ff35ace6a842817f57ec6c8 (patch)
tree1f16ee7c7a7c9bd82577bc1033854c1ba80f72c7 /drivers/scsi/sun3_scsi.c
parente4dec6806aceca768b74c1c6402e6d31ecf3c960 (diff)
atari_NCR5380: Remove DMA_MIN_SIZE macro
Only the atari_scsi and sun3_scsi drivers define DMA_MIN_SIZE. Both drivers also define NCR5380_dma_xfer_len, which means DMA_MIN_SIZE can be removed from the core driver. This removes another discrepancy between the two core drivers. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Tested-by: Michael Schmitz <schmitzmic@gmail.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/sun3_scsi.c')
-rw-r--r--drivers/scsi/sun3_scsi.c19
1 files changed, 9 insertions, 10 deletions
diff --git a/drivers/scsi/sun3_scsi.c b/drivers/scsi/sun3_scsi.c
index 5551b1623ed6..fd4fad816ad4 100644
--- a/drivers/scsi/sun3_scsi.c
+++ b/drivers/scsi/sun3_scsi.c
@@ -36,12 +36,12 @@
#include <scsi/scsi_host.h>
#include "sun3_scsi.h"
-/* Definitions for the core NCR5380 driver. */
-
-/* #define SUPPORT_TAGS */
/* minimum number of bytes to do dma on */
#define DMA_MIN_SIZE 129
+/* Definitions for the core NCR5380 driver. */
+
+/* #define SUPPORT_TAGS */
/* #define MAX_TAGS 32 */
#define NCR5380_implementation_fields /* none */
@@ -61,7 +61,7 @@
#define NCR5380_dma_residual(instance) \
sun3scsi_dma_residual(instance)
#define NCR5380_dma_xfer_len(instance, cmd, phase) \
- sun3scsi_dma_xfer_len(cmd->SCp.this_residual, cmd, !((phase) & SR_IO))
+ sun3scsi_dma_xfer_len(cmd->SCp.this_residual, cmd)
#define NCR5380_acquire_dma_irq(instance) (1)
#define NCR5380_release_dma_irq(instance)
@@ -262,14 +262,13 @@ static inline unsigned long sun3scsi_dma_residual(struct Scsi_Host *instance)
return last_residual;
}
-static inline unsigned long sun3scsi_dma_xfer_len(unsigned long wanted,
- struct scsi_cmnd *cmd,
- int write_flag)
+static inline unsigned long sun3scsi_dma_xfer_len(unsigned long wanted_len,
+ struct scsi_cmnd *cmd)
{
- if (cmd->request->cmd_type == REQ_TYPE_FS)
- return wanted;
- else
+ if (wanted_len < DMA_MIN_SIZE || cmd->request->cmd_type != REQ_TYPE_FS)
return 0;
+
+ return wanted_len;
}
static inline int sun3scsi_dma_start(unsigned long count, unsigned char *data)