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scsi: ncr5380: Pass hostdata pointer to register polling routines

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Pass a NCR5380_hostdata struct pointer to the board-specific routines
instead of a Scsi_Host struct pointer. This reduces pointer chasing in
the PIO and PDMA fast paths. The old way was a mistake because it is
slow and the board-specific code is not concerned with the mid-layer.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ondrej Zary <linux@rainbow-software.org>
Tested-by: Michael Schmitz <schmitzmic@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Finn Thain
2016-10-10 00:46:53 -04:00
committed by Martin K. Petersen
parent 61e1ce588b
commit d5d37a0ab1
3 changed files with 24 additions and 25 deletions
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6
drivers/scsi/NCR5380.h
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@@ -302,15 +302,15 @@ static void NCR5380_reselect(struct Scsi_Host *instance);
static struct scsi_cmnd *NCR5380_select(struct Scsi_Host *, struct scsi_cmnd *);
static int NCR5380_transfer_dma(struct Scsi_Host *instance, unsigned char *phase, int *count, unsigned char **data);
static int NCR5380_transfer_pio(struct Scsi_Host *instance, unsigned char *phase, int *count, unsigned char **data);
static int NCR5380_poll_politely2(struct Scsi_Host *,
static int NCR5380_poll_politely2(struct NCR5380_hostdata *,
unsigned int, u8, u8,
unsigned int, u8, u8, unsigned long);
static inline int NCR5380_poll_politely(struct Scsi_Host *instance,
static inline int NCR5380_poll_politely(struct NCR5380_hostdata *hostdata,
unsigned int reg, u8 bit, u8 val,
unsigned long wait)
{
return NCR5380_poll_politely2(instance, reg, bit, val,
return NCR5380_poll_politely2(hostdata, reg, bit, val,
reg, bit, val, wait);
}