[src/trunk]: src/sys/arch/powerpc/ibm4xx/dev Flush current empty descriptor i...

[kiyohara <kiyohara%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/9105fb19cd2d
branches:  trunk
changeset: 779871:9105fb19cd2d
user:      kiyohara <kiyohara%NetBSD.org@localhost>
date:      Sun Jun 24 08:39:39 2012 +0000

description:
Flush current empty descriptor in emac_rxeob_intr().

diffstat:

 sys/arch/powerpc/ibm4xx/dev/if_emac.c |  10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)

diffs (35 lines):

diff -r fdca9c8d3f0a -r 9105fb19cd2d sys/arch/powerpc/ibm4xx/dev/if_emac.c
--- a/sys/arch/powerpc/ibm4xx/dev/if_emac.c     Sun Jun 24 07:48:01 2012 +0000
+++ b/sys/arch/powerpc/ibm4xx/dev/if_emac.c     Sun Jun 24 08:39:39 2012 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_emac.c,v 1.39 2011/06/18 06:41:42 matt Exp $        */
+/*     $NetBSD: if_emac.c,v 1.40 2012/06/24 08:39:39 kiyohara Exp $    */
 
 /*
  * Copyright 2001, 2002 Wasabi Systems, Inc.
@@ -52,7 +52,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_emac.c,v 1.39 2011/06/18 06:41:42 matt Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_emac.c,v 1.40 2012/06/24 08:39:39 kiyohara Exp $");
 
 #include "opt_emac.h"
 
@@ -1584,11 +1584,15 @@
 
                rxstat = sc->sc_rxdescs[i].md_stat_ctrl;
 
-               if (rxstat & MAL_RX_EMPTY)
+               if (rxstat & MAL_RX_EMPTY) {
                        /*
                         * We have processed all of the receive buffers.
                         */
+                       /* Flush current empty descriptor */
+                       EMAC_CDRXSYNC(sc, i,
+                           BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
                        break;
+               }
 
                /*
                 * If an error occurred, update stats, clear the status