[Midnightbsd-cvs] src [9013] trunk/sys/dev/sym/sym_hipd.c: dont negotiate sync mode if either period of offset are zero.

[laffer1 at midnightbsd.org]

Revision: 9013
          http://svnweb.midnightbsd.org/src/?rev=9013
Author:   laffer1
Date:     2016-09-29 21:51:27 -0400 (Thu, 29 Sep 2016)
Log Message:
-----------
dont negotiate sync mode if either period of offset are zero.

Modified Paths:
--------------
    trunk/sys/dev/sym/sym_hipd.c

Modified: trunk/sys/dev/sym/sym_hipd.c
===================================================================
--- trunk/sys/dev/sym/sym_hipd.c	2016-09-30 01:50:11 UTC (rev 9012)
+++ trunk/sys/dev/sym/sym_hipd.c	2016-09-30 01:51:27 UTC (rev 9013)
@@ -8242,8 +8242,13 @@
 	 *  Scale against driver configuration limits.
 	 */
 	if (tip->width  > SYM_SETUP_MAX_WIDE) tip->width  = SYM_SETUP_MAX_WIDE;
-	if (tip->offset > SYM_SETUP_MAX_OFFS) tip->offset = SYM_SETUP_MAX_OFFS;
-	if (tip->period < SYM_SETUP_MIN_SYNC) tip->period = SYM_SETUP_MIN_SYNC;
+	if (tip->period && tip->offset) {
+		if (tip->offset > SYM_SETUP_MAX_OFFS) tip->offset = SYM_SETUP_MAX_OFFS;
+		if (tip->period < SYM_SETUP_MIN_SYNC) tip->period = SYM_SETUP_MIN_SYNC;
+	} else {
+		tip->offset = 0;
+		tip->period = 0;
+	}
 
 	/*
 	 *  Scale against actual controller BUS width.
@@ -8262,22 +8267,24 @@
 	/*
 	 *  Scale period factor and offset against controller limits.
 	 */
-	if (tip->options & PPR_OPT_DT) {
-		if (tip->period < np->minsync_dt)
-			tip->period = np->minsync_dt;
-		if (tip->period > np->maxsync_dt)
-			tip->period = np->maxsync_dt;
-		if (tip->offset > np->maxoffs_dt)
-			tip->offset = np->maxoffs_dt;
+	if (tip->offset && tip->period) {
+		if (tip->options & PPR_OPT_DT) {
+			if (tip->period < np->minsync_dt)
+				tip->period = np->minsync_dt;
+			if (tip->period > np->maxsync_dt)
+				tip->period = np->maxsync_dt;
+			if (tip->offset > np->maxoffs_dt)
+				tip->offset = np->maxoffs_dt;
+		}
+		else {
+			if (tip->period < np->minsync)
+				tip->period = np->minsync;
+			if (tip->period > np->maxsync)
+				tip->period = np->maxsync;
+			if (tip->offset > np->maxoffs)
+				tip->offset = np->maxoffs;
+		}
 	}
-	else {
-		if (tip->period < np->minsync)
-			tip->period = np->minsync;
-		if (tip->period > np->maxsync)
-			tip->period = np->maxsync;
-		if (tip->offset > np->maxoffs)
-			tip->offset = np->maxoffs;
-	}
 }
 
 /*