--- R29/drivers/scsi/hosts.c	2004-03-24 19:55:43.000000000 +0000
+++ R63/drivers/scsi/hosts.c	2005-04-05 02:40:53.000000000 +0100
@@ -36,12 +36,15 @@
 #define __KERNEL_SYSCALLS__
 
 #include <linux/unistd.h>
-
+//pete
+#include <linux/sched.h>
+#include <linux/completion.h>
+//
 #include "scsi.h"
 #include "hosts.h"
 
 /*
-static const char RCSid[] = "$Header: /home/cvsroot/NSLU2/linux-2.4.x/drivers/scsi/hosts.c,v 1.1.1.1 2004/03/24 19:55:43 sure Exp $";
+static const char RCSid[] = "$Header: /home/nas-cvsroot/NSLU2_V2/linux-2.4.x/drivers/scsi/hosts.c,v 1.2 2005/04/05 01:40:53 shearer Exp $";
 */
 
 /*
@@ -84,6 +87,12 @@
 int max_scsi_hosts;	/* host_no for next new host */
 int next_scsi_host;	/* count of registered scsi hosts */
 
+//pete
+extern pid_t sd_mc_thread_pid;
+//extern DECLARE_COMPLETION(scsi_mc_thread_exited);
+extern struct completion sd_mc_thread_exited;
+//
+
 void
 scsi_unregister(struct Scsi_Host * sh){
     struct Scsi_Host * shpnt;
@@ -110,6 +119,15 @@
     
     next_scsi_host--;
 
+    //pete
+    //printk("+++++ scsi_unregister:next_scsi_host:%d\n", next_scsi_host);
+    if( next_scsi_host == 0){
+    	  /* Send a signal to exit the thread. */
+          kill_proc(sd_mc_thread_pid, SIGTERM, 1);
+          /* If no scsi host left, we wait the thread to exit. */
+    	  wait_for_completion(&sd_mc_thread_exited);
+    }
+    //
     kfree((char *) sh);
 }