svn commit: r280521 - stable/10/sys/dev/sfxge/common

[Andrew Rybchenko]

Author: arybchik
Date: Wed Mar 25 10:26:45 2015
New Revision: 280521
URL: https://svnweb.freebsd.org/changeset/base/280521

Log:
  MFC: 278220
  
  sfxge: Implement EFSYS_MEM_READ_BARRIER()
  
  Sponsored by:   Solarflare Communications, Inc.
  Approved by:    gnn (mentor)

Modified:
  stable/10/sys/dev/sfxge/common/efsys.h
Directory Properties:
  stable/10/   (props changed)

Modified: stable/10/sys/dev/sfxge/common/efsys.h
==============================================================================
--- stable/10/sys/dev/sfxge/common/efsys.h	Wed Mar 25 10:26:07 2015	(r280520)
+++ stable/10/sys/dev/sfxge/common/efsys.h	Wed Mar 25 10:26:45 2015	(r280521)
@@ -677,8 +677,7 @@ typedef struct efsys_bar_s {
 
 /* BARRIERS */
 
-/* Strict ordering guaranteed by devacc.devacc_attr_dataorder */
-#define	EFSYS_MEM_READ_BARRIER()
+#define	EFSYS_MEM_READ_BARRIER()	rmb()
 #define	EFSYS_PIO_WRITE_BARRIER()
 
 /* TIMESTAMP */