vgavesa: fix race

2011-08-23 06:11:16 +02:00 · 2011-08-23 06:11:16 +02:00 · 1a82d67770
parent b25e48b949
commit 1a82d67770
1 changed files with 4 additions and 0 deletions
--- a/sys/src/9/pc/vgavesa.c
+++ b/sys/src/9/pc/vgavesa.c
@ -265,6 +265,10 @@ vesadisable(VGAscr *)
 {
 	vesactl = Cdisable;
 	wakeup(&vesar);
+
+	/* wait for vesaproc to finish */
+	qlock(&vesaq);
+	qunlock(&vesaq);
 }

 static void