[Xen-changelog] [xen-unstable] mini-os: Do not use the same wait element twice

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1270534359 -3600
# Node ID 4822f82acec6d36e651f6c205ddf8a8109262423
# Parent  61372a4f4e76ed9cf2845e4d9619a841ad065f26
mini-os: Do not use the same wait element twice

To enqueue the kbdfront thread on two separate wait queues, we need
two different wait elements.

Signed-off-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>
---
 extras/mini-os/kernel.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletion(-)

diff -r 61372a4f4e76 -r 4822f82acec6 extras/mini-os/kernel.c
--- a/extras/mini-os/kernel.c   Tue Apr 06 07:11:48 2010 +0100
+++ b/extras/mini-os/kernel.c   Tue Apr 06 07:12:39 2010 +0100
@@ -353,6 +353,7 @@ static void kbdfront_thread(void *p)
 static void kbdfront_thread(void *p)
 {
     DEFINE_WAIT(w);
+    DEFINE_WAIT(w2);
     int x = WIDTH / 2, y = HEIGHT / 2, z = 0;
 
     kbd_dev = init_kbdfront(NULL, 1);
@@ -367,7 +368,7 @@ static void kbdfront_thread(void *p)
         int sleep = 1;
 
         add_waiter(w, kbdfront_queue);
-        add_waiter(w, fbfront_queue);
+        add_waiter(w2, fbfront_queue);
 
         while (kbdfront_receive(kbd_dev, &kbdevent, 1) != 0) {
             sleep = 0;

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