From d3dba23aeda3a32e05e2202395024f32eb246180 Mon Sep 17 00:00:00 2001
From: Jon Meredith <jmeredith@thehive.com>
Date: Thu, 12 Feb 2009 11:19:51 -0700
Subject: [PATCH] Moved zero-ing of async_pool/job inside mutex to avoid risk
 of race in bdberl_drv_stop.

---
 c_src/bdberl_drv.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/c_src/bdberl_drv.c b/c_src/bdberl_drv.c
index 39fb512..3b618f4 100644
--- a/c_src/bdberl_drv.c
+++ b/c_src/bdberl_drv.c
@@ -906,10 +906,10 @@ static void tune_system(int target, void* values, BinHelper* bh)
 static void async_cleanup(PortData* d)
 {
     // Release the port for another operation
-    d->async_pool = 0;
-    d->async_job  = 0;
     d->work_buffer_offset = 0;
     erl_drv_mutex_lock(d->port_lock);
+    d->async_pool = 0;
+    d->async_job  = 0;
     d->async_op = CMD_NONE;
     erl_drv_mutex_unlock(d->port_lock);
 }