summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/NCR5380.c
diff options
context:
space:
mode:
authorFinn Thain <fthain@telegraphics.com.au>2016-03-23 21:10:15 +1100
committerMartin K. Petersen <martin.petersen@oracle.com>2016-04-11 16:57:09 -0400
commitf825e40b235f4daf1c9017366809d34c7f5c8c7f (patch)
tree73dfa8695b119f5330344924cf141fe5de7251ad /drivers/scsi/NCR5380.c
parent1bb4600245d4d40245dd505ca17528e0b9a9ba8c (diff)
downloadlinux-f825e40b235f4daf1c9017366809d34c7f5c8c7f.tar.gz
linux-f825e40b235f4daf1c9017366809d34c7f5c8c7f.tar.bz2
linux-f825e40b235f4daf1c9017366809d34c7f5c8c7f.zip
ncr5380: Remove PSEUDO_DMA macro
For those wrapper drivers which only implement Programmed IO, have NCR5380_dma_xfer_len() evaluate to zero. That allows PDMA to be easily disabled at run-time and so the PSEUDO_DMA macro is no longer needed. Also remove the spin counters used for debugging pseudo DMA drivers. 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>
Diffstat (limited to 'drivers/scsi/NCR5380.c')
-rw-r--r--drivers/scsi/NCR5380.c32
1 files changed, 1 insertions, 31 deletions
diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c
index 69c73c36b923..fc86cde2d28e 100644
--- a/drivers/scsi/NCR5380.c
+++ b/drivers/scsi/NCR5380.c
@@ -469,34 +469,9 @@ static void prepare_info(struct Scsi_Host *instance)
#ifdef PARITY
"PARITY "
#endif
-#ifdef PSEUDO_DMA
- "PSEUDO_DMA "
-#endif
"");
}
-#ifdef PSEUDO_DMA
-static int __maybe_unused NCR5380_write_info(struct Scsi_Host *instance,
- char *buffer, int length)
-{
- struct NCR5380_hostdata *hostdata = shost_priv(instance);
-
- hostdata->spin_max_r = 0;
- hostdata->spin_max_w = 0;
- return 0;
-}
-
-static int __maybe_unused NCR5380_show_info(struct seq_file *m,
- struct Scsi_Host *instance)
-{
- struct NCR5380_hostdata *hostdata = shost_priv(instance);
-
- seq_printf(m, "Highwater I/O busy spin counts: write %d, read %d\n",
- hostdata->spin_max_w, hostdata->spin_max_r);
- return 0;
-}
-#endif
-
/**
* NCR5380_init - initialise an NCR5380
* @instance: adapter to configure
@@ -1436,7 +1411,6 @@ timeout:
return -1;
}
-#if defined(PSEUDO_DMA)
/*
* Function : int NCR5380_transfer_dma (struct Scsi_Host *instance,
* unsigned char *phase, int *count, unsigned char **data)
@@ -1592,7 +1566,6 @@ static int NCR5380_transfer_dma(struct Scsi_Host *instance,
*phase = NCR5380_read(STATUS_REG) & PHASE_MASK;
return foo;
}
-#endif /* PSEUDO_DMA */
/*
* Function : NCR5380_information_transfer (struct Scsi_Host *instance)
@@ -1683,7 +1656,6 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
* in an unconditional loop.
*/
-#if defined(PSEUDO_DMA)
transfersize = 0;
if (!cmd->device->borken)
transfersize = NCR5380_dma_xfer_len(instance, cmd, phase);
@@ -1706,9 +1678,7 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance)
/* XXX - need to source or sink data here, as appropriate */
} else
cmd->SCp.this_residual -= transfersize - len;
- } else
-#endif /* PSEUDO_DMA */
- {
+ } else {
/* Break up transfer into 3 ms chunks,
* presuming 6 accesses per handshake.
*/