Not doing this can cause cards less than u160 capable to send out PPR
offers to devices they can't then deliver on ... causing some devices to
get a bit confused. Fix by capping the start syncrate at the
appropriate level according to the card capabilities.
James
diff --git a/drivers/scsi/aic7xxx/aic7xxx_core.c
b/drivers/scsi/aic7xxx/aic7xxx_core.c
index 75733b0..f350b5e 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_core.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_core.c
@@ -1701,7 +1701,16 @@ ahc_find_syncrate(struct ahc_softc *ahc, u_int *period,
if ((*ppr_options & MSG_EXT_PPR_DT_REQ) == 0
&& maxsync < AHC_SYNCRATE_ULTRA2)
maxsync = AHC_SYNCRATE_ULTRA2;
-
+
+ /* Now set the maxsync based on the card capabilities
+ * DT is already done above */
+ if ((ahc->features & (AHC_DT | AHC_ULTRA2)) == 0
+ && maxsync < AHC_SYNCRATE_ULTRA)
+ maxsync = AHC_SYNCRATE_ULTRA;
+ if ((ahc->features & (AHC_DT | AHC_ULTRA2 | AHC_ULTRA)) == 0
+ && maxsync < AHC_SYNCRATE_FAST)
+ maxsync = AHC_SYNCRATE_FAST;
+
for (syncrate = &ahc_syncrates[maxsync];
syncrate->rate != NULL;
syncrate++) {
@@ -1765,6 +1774,17 @@ ahc_find_period(struct ahc_softc *ahc, u_int scsirate,
u_int maxsync)
else
scsirate &= SXFR;
+ /* now set maxsync based on card capabilities */
+ if ((ahc->features & AHC_DT) == 0 && maxsync < AHC_SYNCRATE_ULTRA2)
+ maxsync = AHC_SYNCRATE_ULTRA2;
+ if ((ahc->features & (AHC_DT | AHC_ULTRA2)) == 0
+ && maxsync < AHC_SYNCRATE_ULTRA)
+ maxsync = AHC_SYNCRATE_ULTRA;
+ if ((ahc->features & (AHC_DT | AHC_ULTRA2 | AHC_ULTRA)) == 0
+ && maxsync < AHC_SYNCRATE_FAST)
+ maxsync = AHC_SYNCRATE_FAST;
+
+
syncrate = &ahc_syncrates[maxsync];
while (syncrate->rate != NULL) {
-
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