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[SCSI] ultrastor: convert to use the data buffer accessors

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- remove the unnecessary map_single path.

- convert to use the new accessors for the sg lists and the
parameters.

Jens Axboe <jens.axboe@oracle.com> did the for_each_sg cleanup.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
FUJITA Tomonori 2007-05-14 19:26:29 +09:00 committed by James Bottomley
parent e7d6cf55ea
commit d178671356
1 changed files with 9 additions and 10 deletions
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19
drivers/scsi/ultrastor.c
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@ -675,16 +675,15 @@ static const char *ultrastor_info(struct Scsi_Host * shpnt)
static inline void build_sg_list(struct mscp *mscp, struct scsi_cmnd *SCpnt)
{
struct scatterlist *sl;
struct scatterlist *sg;
long transfer_length = 0;
int i, max;
sl = (struct scatterlist *) SCpnt->request_buffer;
max = SCpnt->use_sg;
for (i = 0; i < max; i++) {
mscp->sglist[i].address = isa_page_to_bus(sl[i].page) + sl[i].offset;
mscp->sglist[i].num_bytes = sl[i].length;
transfer_length += sl[i].length;
max = scsi_sg_count(SCpnt);
scsi_for_each_sg(SCpnt, sg, max, i) {
mscp->sglist[i].address = isa_page_to_bus(sg->page) + sg->offset;
mscp->sglist[i].num_bytes = sg->length;
transfer_length += sg->length;
}
mscp->number_of_sg_list = max;
mscp->transfer_data = isa_virt_to_bus(mscp->sglist);
@ -730,15 +729,15 @@ static int ultrastor_queuecommand(struct scsi_cmnd *SCpnt,
my_mscp->target_id = SCpnt->device->id;
my_mscp->ch_no = 0;
my_mscp->lun = SCpnt->device->lun;
if (SCpnt->use_sg) {
if (scsi_sg_count(SCpnt)) {
/* Set scatter/gather flag in SCSI command packet */
my_mscp->sg = TRUE;
build_sg_list(my_mscp, SCpnt);
} else {
/* Unset scatter/gather flag in SCSI command packet */
my_mscp->sg = FALSE;
my_mscp->transfer_data = isa_virt_to_bus(SCpnt->request_buffer);
my_mscp->transfer_data_length = SCpnt->request_bufflen;
my_mscp->transfer_data = isa_virt_to_bus(scsi_sglist(SCpnt));
my_mscp->transfer_data_length = scsi_bufflen(SCpnt);
}
my_mscp->command_link = 0; /*???*/
my_mscp->scsi_command_link_id = 0; /*???*/