From 0defcb883048699136c2d80a120a1eccc48f2050 Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Fri, 17 Jan 1992 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1992-01-17

---
 pc/bbmalloc.c | 9 +++++----
 power/devhs.c | 5 +++++
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/pc/bbmalloc.c b/pc/bbmalloc.c
index aab0ef2586cb78bf247a5d6cc47eada9d292ecca..3dde08e9b2f2d30019e5da354d34fabf545fd21d 100644
--- a/pc/bbmalloc.c
+++ b/pc/bbmalloc.c
@@ -45,9 +45,10 @@ bbfree(void *va, int n)
 	print("sanity bbfree\n");
 }
 
-void*
-bbdflush(void *p, int n)
+int
+bbonstack(void)
 {
-	return p;
+	if(u)
+		return 1;
+	return 0;
 }
-
diff --git a/power/devhs.c b/power/devhs.c
index 2f99adaa61a2e1ab90074b464ecf9c6bdb6c8b06..b9a3a3075faf0a0f08f95076a03c7a59b793990c 100644
--- a/power/devhs.c
+++ b/power/devhs.c
@@ -352,6 +352,10 @@ hsvmeoput(Queue *q, Block *bp)
 	 *  one transmitter at a time
 	 */
 	hp = (Hsvme *)q->ptr;
+	if(waserror()){
+		qunlock(&hp->xmit);
+		nexterror();
+	}
 	qlock(&hp->xmit);
 	addr = hp->addr;
 
@@ -419,6 +423,7 @@ hsvmeoput(Queue *q, Block *bp)
 	addr->data = TXEOD;
 
 	qunlock(&hp->xmit);
+	poperror();
 }
 
 /*