From ebfe295ab4300176782cbed7115fb75011338ae2 Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Sat, 4 Jan 1992 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1992-01-04

---
 pc/trap.c         |  4 ++--
 power/devhotrod.c | 24 ++++++++++++++++++++++++
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/pc/trap.c b/pc/trap.c
index fd2fb93b683b9c27297f553f80b204c1c97bb824..1c9aab201e19bc6701ff4c21c50be922366ae00d 100644
--- a/pc/trap.c
+++ b/pc/trap.c
@@ -242,9 +242,9 @@ trap(Ureg *ur)
 	(*ivec[v])(ur);
 
 	/*
-	 *  syscall does it's own notifying
+	 *  check user since syscall does it's own notifying
 	 */
-	if(user)
+	if(user && (u->p->procctl || u->nnote))
 		notify(ur);
 }
 
diff --git a/power/devhotrod.c b/power/devhotrod.c
index 93c735f22f2d2f6890ccb09c0dd88ec911ab3446..dde112b259b82f71de33f71292a7b6ce42c7cfc3 100644
--- a/power/devhotrod.c
+++ b/power/devhotrod.c
@@ -336,6 +336,30 @@ hotrodread(Chan *c, void *buf, long n, ulong offset)
 			}
 			if(mp->param[2] != hotsum(buf, m, mp->param[2])){
 				hp->addr->lcsr7 = 0xBEEF;
+{
+	ulong *i, j, posn, nerr, val;
+
+	i = buf;
+	posn = -1;
+	nerr = 0;
+	for(j = 0; j < n/4; j++) {
+		val = *i & 0xffff;
+		if(posn == -1)
+			posn = val+1;
+		else if(posn != val) {
+			print("error at offset %d %8lux != %8lux word=%8lux\n", 
+						j, posn, val, *i);
+			posn = -1;
+			if(++nerr > 10) {
+				print("too many\n");
+				break;
+			}
+		}
+		else
+			posn++;
+		i++;
+	}
+}
 				print("hotrod cksum err is %lux sb %lux\n",
 					hotsum(buf, m, 1), mp->param[2]);
 /*