From: Ben Gras <ben@minix3.org>
Date: Tue, 9 Aug 2011 16:59:01 +0000 (+0000)
Subject: tty: handle REVIVE case on console device
X-Git-Tag: v3.2.0~378
X-Git-Url: http://zhaoyanbai.com/repos/rndc.html?a=commitdiff_plain;h=3a44cd477b437dfb9d4853d934f4ec64901a5757;p=minix.git

tty: handle REVIVE case on console device

	. can happen on e.g. ^S
	. reported by Stephen Hatton
---

diff --git a/drivers/tty/console.c b/drivers/tty/console.c
index 230f26fac..58d062d39 100644
--- a/drivers/tty/console.c
+++ b/drivers/tty/console.c
@@ -206,10 +206,14 @@ int try;
 
   /* Reply to the writer if all output is finished or if an error occured. */
   if (tp->tty_outleft == 0 || result != OK) {
-	/* REVIVE is not possible. I/O on memory mapped consoles finishes. */
-	tty_reply(tp->tty_outrepcode, tp->tty_outcaller, tp->tty_outproc,
-							tp->tty_outcum);
-	tp->tty_outcum = 0;
+	if(tp->tty_outrepcode == TTY_REVIVE) {
+		notify(tp->tty_outcaller);
+		tp->tty_outrevived = 1;
+	} else {
+		tty_reply(tp->tty_outrepcode, tp->tty_outcaller,
+			tp->tty_outproc, tp->tty_outcum);
+		tp->tty_outcum = 0;
+	}
   }
 
   return 0;