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authorBoaz Harrosh <bharrosh@panasas.com>2007-11-05 11:21:40 +0200
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-01-11 18:22:39 -0600
commit9a3dd65bafcfa3338cfb4b6b7e12ff59aca0ac28 (patch)
treec48e89bac733c362ab2526ffdf61b5965071c3c1 /drivers/scsi/wd7000.c
parentfe7ed98fd49a28287aca8b0ba8da8fb9ca35a055 (diff)
downloadop-kernel-dev-9a3dd65bafcfa3338cfb4b6b7e12ff59aca0ac28.zip
op-kernel-dev-9a3dd65bafcfa3338cfb4b6b7e12ff59aca0ac28.tar.gz
[SCSI] wd7000: proper fix for boards without sg support
- 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 <bharrosh@panasas.com> Signed-off-by: James <James.Bottomley@HansenPartnership.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/wd7000.c')
-rw-r--r--drivers/scsi/wd7000.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/scsi/wd7000.c b/drivers/scsi/wd7000.c
index 03cd44f..b4304ae 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)) + 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 */
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