[SCSI] aic7xxx: fix bug in DT handing

Basically DT isn't reported or handled at all.  The problem is that
lines of code like this:

spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ;

don't do what you think they do when spi_dt is a single bit variable.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 6 insertions, 4 deletions

diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c
index 116d0f51ca2c..d0d0b84a31f4 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c
@@ -1635,9 +1635,9 @@ ahc_send_async(struct ahc_softc *ahc, char channel,
                 spi_period(starget) = tinfo->curr.period;
                 spi_width(starget) = tinfo->curr.width;
                 spi_offset(starget) = tinfo->curr.offset;
-                spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ;
-                spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ;
-                spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ;
+                spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ ? 1 : 0;
+                spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ ? 1 : 0;
+                spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ ? 1 : 0;
                 spi_display_xfer_agreement(starget);
                 break;
         }
@@ -2435,8 +2435,10 @@ static void ahc_linux_set_dt(struct scsi_target *starget, int dt)
         if (dt) {
                 period = 9;     /* 12.5ns is the only period valid for DT */
                 ppr_options |= MSG_EXT_PPR_DT_REQ;
-        } else if (period == 9)
+        } else if (period == 9) {
                 period = 10;    /* if resetting DT, period must be >= 25ns */
+                ppr_options &= ~MSG_EXT_PPR_DT_REQ;
+        }
 
         ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
                             starget->channel + 'A', ROLE_INITIATOR);