svn commit: r278220 - head/sys/dev/sfxge/common

[Andrew Rybchenko]

Author: arybchik
Date: Wed Feb  4 19:58:54 2015
New Revision: 278220
URL: https://svnweb.freebsd.org/changeset/base/278220

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

Modified:
  head/sys/dev/sfxge/common/efsys.h

Modified: head/sys/dev/sfxge/common/efsys.h
==============================================================================
--- head/sys/dev/sfxge/common/efsys.h	Wed Feb  4 19:40:30 2015	(r278219)
+++ head/sys/dev/sfxge/common/efsys.h	Wed Feb  4 19:58:54 2015	(r278220)
@@ -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 */