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| author |   Finn Thain <fthain@telegraphics.com.au> | 2016-03-23 21:10:13 +1100 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2016-04-11 16:57:09 -0400 |
| commit | e63449c43a58fc185ff35ace6a842817f57ec6c8 (patch) | |
| tree | 1f16ee7c7a7c9bd82577bc1033854c1ba80f72c7 /drivers/scsi/sun3_scsi.c | |
| parent | ncr5380: Remove REAL_DMA and REAL_DMA_POLL macros (diff) | |
| download | linux-dev-e63449c43a58fc185ff35ace6a842817f57ec6c8.tar.xz linux-dev-e63449c43a58fc185ff35ace6a842817f57ec6c8.zip | |
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.c | 19 |
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) |