[PATCH 23/24] wd7000.c - proper fix for boards without sg support
From: Boaz Harrosh <hidden>
Date: 2007-09-12 00:12:23
Subsystem:
scsi subsystem, the rest · Maintainers:
"James E.J. Bottomley", "Martin K. Petersen", Linus Torvalds
- code used to set sg_tablesize to zero for board revision
less than 6. This is no longer supported, therefore I
use sg_tablesize=1 and open code the sg handling for that case.
- Get rid of use of SG_NONE which will be removed soon.
Signed-off-by: Boaz Harrosh <redacted>
---
drivers/scsi/wd7000.c | 12 ++++++------
1 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/scsi/wd7000.c b/drivers/scsi/wd7000.c
index d6fd425..11db201 100644
--- a/drivers/scsi/wd7000.c
+++ b/drivers/scsi/wd7000.c@@ -1108,13 +1108,10 @@ static int wd7000_queuecommand(struct scsi_cmnd *SCpnt, scb->host = host; nseg = scsi_sg_count(SCpnt); - if (nseg) { + if (nseg > 1) { struct scatterlist *sg; unsigned i; - if (SCpnt->device->host->sg_tablesize == SG_NONE) { - panic("wd7000_queuecommand: scatter/gather not supported.\n"); - } dprintk("Using scatter/gather with %d elements.\n", nseg); sgb = scb->sgb;
@@ -1128,7 +1125,10 @@ static int wd7000_queuecommand(struct scsi_cmnd *SCpnt, } } else { scb->op = 0; - any2scsi(scb->dataptr, isa_virt_to_bus(scsi_sglist(SCpnt))); + if (nseg) { + struct scatterlist *sg = scsi_sglist(SCpnt); + any2scsi(scb->dataptr, isa_page_to_bus(sg->page) + sg->offset); + } any2scsi(scb->maxlen, scsi_bufflen(SCpnt)); }
@@ -1524,7 +1524,7 @@ static __init int wd7000_detect(struct scsi_host_template *tpnt) * For boards before rev 6.0, scatter/gather isn't supported. */ if (host->rev1 < 6) - sh->sg_tablesize = SG_NONE; + sh->sg_tablesize = 1; present++; /* count it */
--
1.5.3.1