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[SCSI] sym53c8xx: Remove data_mapping and data_mapped 

Before all commands used sg, data_mapping and data_mapped were used to
distinguish whether the command had used map_single or map_sg.  Now all
commands are sg, so we can delete data_mapping, data_mapped and the
wrapper functions __unmap_scsi_data, __map_scsi_sg_data, unmap_scsi_data
and map_scsi_sg_data.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Matthew Wilcox 2007-10-05 15:55:00 -04:00 committed by James Bottomley
parent f363abff55
commit 39c05d1e3c
1 changed files with 3 additions and 30 deletions
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33
drivers/scsi/sym53c8xx_2/sym_glue.c
View File

@ -134,8 +134,6 @@ static struct scsi_transport_template *sym2_transport_template = NULL;
* Driver private area in the SCSI command structure.
*/
struct sym_ucmd { /* Override the SCSI pointer structure */
dma_addr_t data_mapping;
unsigned char data_mapped;
unsigned char to_do; /* For error handling */
void (*old_done)(struct scsi_cmnd *); /* For error handling */
struct completion *eh_done; /* For error handling */
@ -144,37 +142,12 @@ struct sym_ucmd { /* Override the SCSI pointer structure */
#define SYM_UCMD_PTR(cmd) ((struct sym_ucmd *)(&(cmd)->SCp))
#define SYM_SOFTC_PTR(cmd) sym_get_hcb(cmd->device->host)
static void __unmap_scsi_data(struct pci_dev *pdev, struct scsi_cmnd *cmd)
{
if (SYM_UCMD_PTR(cmd)->data_mapped)
scsi_dma_unmap(cmd);
SYM_UCMD_PTR(cmd)->data_mapped = 0;
}
static int __map_scsi_sg_data(struct pci_dev *pdev, struct scsi_cmnd *cmd)
{
int use_sg;
use_sg = scsi_dma_map(cmd);
if (use_sg > 0) {
SYM_UCMD_PTR(cmd)->data_mapped = 2;
SYM_UCMD_PTR(cmd)->data_mapping = use_sg;
}
return use_sg;
}
#define unmap_scsi_data(np, cmd) \
__unmap_scsi_data(np->s.device, cmd)
#define map_scsi_sg_data(np, cmd) \
__map_scsi_sg_data(np->s.device, cmd)
/*
* Complete a pending CAM CCB.
*/
void sym_xpt_done(struct sym_hcb *np, struct scsi_cmnd *cmd)
{
unmap_scsi_data(np, cmd);
scsi_dma_unmap(cmd);
cmd->scsi_done(cmd);
}
@ -307,14 +280,14 @@ static int sym_scatter(struct sym_hcb *np, struct sym_ccb *cp, struct scsi_cmnd
cp->data_len = 0;
use_sg = map_scsi_sg_data(np, cmd);
use_sg = scsi_dma_map(cmd);
if (use_sg > 0) {
struct scatterlist *sg;
struct sym_tcb *tp = &np->target[cp->target];
struct sym_tblmove *data;
if (use_sg > SYM_CONF_MAX_SG) {
unmap_scsi_data(np, cmd);
scsi_dma_unmap(cmd);
return -1;
}