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ncr5380: Remove NCR5380_local_declare and NCR5380_setup macros

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The NCR5380_local_declare and NCR5380_setup macros exist to define and
initialize a particular local variable, to provide the address of the
chip registers needed for the driver's implementation of its
NCR5380_read/write register access macros.

In cumana_1 and macscsi, these macros generate pointless code like this,
	struct Scsi_Host *_instance;
	_instance = instance;

In pas16, the use of NCR5380_read/write in pas16_hw_detect() requires that
the io_port local variable has been defined and initialized, but the
NCR5380_local_declare and NCR5380_setup macros can't be used for that
purpose because the Scsi_Host struct has not yet been instantiated.

Moreover, these macros were removed from atari_NCR5380.c long ago and
now they constitute yet another discrepancy between the two core driver
forks.

Remove these "optimizations".

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Finn Thain
2016-01-03 16:05:06 +11:00
committed by Martin K. Petersen
parent c0965e6371
commit 54d8fe4425
13 changed files with 77 additions and 161 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
drivers/scsi/g_NCR5380.c
View File

@@ -459,9 +459,6 @@ static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
static int generic_NCR5380_release_resources(struct Scsi_Host *instance)
{
NCR5380_local_declare();
NCR5380_setup(instance);
if (instance->irq != NO_IRQ)
free_irq(instance->irq, instance);
NCR5380_exit(instance);
@@ -520,13 +517,13 @@ generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev,
static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len)
{
#ifdef SCSI_G_NCR5380_MEM
struct NCR5380_hostdata *hostdata = shost_priv(instance);
#endif
int blocks = len / 128;
int start = 0;
int bl;
NCR5380_local_declare();
NCR5380_setup(instance);
NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR);
NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
while (1) {
@@ -547,7 +544,8 @@ static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst,
}
#else
/* implies SCSI_G_NCR5380_MEM */
memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128);
memcpy_fromio(dst + start,
hostdata->iomem + NCR53C400_host_buffer, 128);
#endif
start += 128;
blocks--;
@@ -567,7 +565,8 @@ static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst,
}
#else
/* implies SCSI_G_NCR5380_MEM */
memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128);
memcpy_fromio(dst + start,
hostdata->iomem + NCR53C400_host_buffer, 128);
#endif
start += 128;
blocks--;
@@ -604,14 +603,14 @@ static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst,
static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len)
{
#ifdef SCSI_G_NCR5380_MEM
struct NCR5380_hostdata *hostdata = shost_priv(instance);
#endif
int blocks = len / 128;
int start = 0;
int bl;
int i;
NCR5380_local_declare();
NCR5380_setup(instance);
NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE);
NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
while (1) {
@@ -632,7 +631,8 @@ static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src,
}
#else
/* implies SCSI_G_NCR5380_MEM */
memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128);
memcpy_toio(hostdata->iomem + NCR53C400_host_buffer,
src + start, 128);
#endif
start += 128;
blocks--;
@@ -648,7 +648,8 @@ static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src,
}
#else
/* implies SCSI_G_NCR5380_MEM */
memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128);
memcpy_toio(hostdata->iomem + NCR53C400_host_buffer,
src + start, 128);
#endif
start += 128;
blocks--;