[SCSI] remove use_sg_chaining

[linux-2.6-omap-h63xx.git] / drivers / scsi / wd7000.c

diff --git a/drivers/scsi/wd7000.c b/drivers/scsi/wd7000.c
index d6fd4259c56bde5614d22fd8ffb532e2fdb18a15..c975c01b3a02431000f071116f3b40caffd4f3f8 100644 (file)
--- 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;
@@ -1123,12 +1120,15 @@ static int wd7000_queuecommand(struct scsi_cmnd *SCpnt,
                any2scsi(scb->maxlen, nseg * sizeof(Sgb));
 
                scsi_for_each_sg(SCpnt, sg, nseg, i) {
-                       any2scsi(sgb[i].ptr, isa_page_to_bus(sg->page) + sg->offset);
+                       any2scsi(sgb[i].ptr, isa_page_to_bus(sg_page(sg)) + sg->offset);
                        any2scsi(sgb[i].len, sg->length);
                }
        } 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 */