From e36d9f5c4e667970a4a7aa15744e304ccc7c58f3 Mon Sep 17 00:00:00 2001
From: cinap_lenrek <cinap_lenrek@gmx.de>
Date: Sun, 16 Jun 2013 06:26:31 +0200
Subject: make filesystem handling of read9pmsg() consistent

---
 sys/src/cmd/cpu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'sys/src/cmd/cpu.c')

diff --git a/sys/src/cmd/cpu.c b/sys/src/cmd/cpu.c
index 16d73e814..16c0f6186 100644
--- a/sys/src/cmd/cpu.c
+++ b/sys/src/cmd/cpu.c
@@ -1090,11 +1090,13 @@ notefs(int fd)
 	ncpunote = 0;
 	for(;;){
 		n = read9pmsg(fd, buf, sizeof(buf));
-		if(n <= 0){
+		if(n < 0){
 			if(dbg)
 				fprint(2, "read9pmsg(%d) returns %d: %r\n", fd, n);
 			break;
 		}
+		if(n == 0)
+			continue;
 		if(convM2S(buf, n, &f) <= BIT16SZ)
 			break;
 		if(dbg)
-- 
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