diff options
| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2007-05-14 19:26:29 +0900 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2007-05-26 19:18:38 -0500 |
| commit | d17867135639bec1bce5b38d29e6fa4cfea050ea (patch) | |
| tree | bacbc5180f161ed8c23dd13cc5d119da06632de9 /drivers/scsi/ultrastor.c | |
| parent | e7d6cf55ea47684b704d67a6046044c29bad4824 (diff) | |
| download | lwn-d17867135639bec1bce5b38d29e6fa4cfea050ea.tar.gz lwn-d17867135639bec1bce5b38d29e6fa4cfea050ea.zip | |
[SCSI] ultrastor: convert to use the data buffer accessors
- 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>
Diffstat (limited to 'drivers/scsi/ultrastor.c')
| -rw-r--r-- | drivers/scsi/ultrastor.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/drivers/scsi/ultrastor.c b/drivers/scsi/ultrastor.c index 56906aba5ee3..c08235d5afc9 100644 --- a/drivers/scsi/ultrastor.c +++ b/drivers/scsi/ultrastor.c @@ -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; /*???*/ |