[src/trunk]: src/sys/dev/pci only bus_dmamap_sync(9) once for ICT region.

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

details:   https://anonhg.NetBSD.org/src/rev/0e936220d65d
branches:  trunk
changeset: 820970:0e936220d65d
user:      nonaka <nonaka%NetBSD.org@localhost>
date:      Tue Jan 17 08:35:16 2017 +0000

description:
only bus_dmamap_sync(9) once for ICT region.

diffstat:

 sys/dev/pci/if_iwm.c |  10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)

diffs (35 lines):

diff -r a080e98c0043 -r 0e936220d65d sys/dev/pci/if_iwm.c
--- a/sys/dev/pci/if_iwm.c      Tue Jan 17 08:10:37 2017 +0000
+++ b/sys/dev/pci/if_iwm.c      Tue Jan 17 08:35:16 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_iwm.c,v 1.61 2017/01/13 11:21:47 nonaka Exp $       */
+/*     $NetBSD: if_iwm.c,v 1.62 2017/01/17 08:35:16 nonaka Exp $       */
 /*     OpenBSD: if_iwm.c,v 1.148 2016/11/19 21:07:08 stsp Exp  */
 #define IEEE80211_NO_HT
 /*
@@ -107,7 +107,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_iwm.c,v 1.61 2017/01/13 11:21:47 nonaka Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_iwm.c,v 1.62 2017/01/17 08:35:16 nonaka Exp $");
 
 #include <sys/param.h>
 #include <sys/conf.h>
@@ -7221,13 +7221,13 @@
                while (tmp) {
                        r1 |= tmp;
                        ict[sc->ict_cur] = 0;   /* Acknowledge. */
-                       bus_dmamap_sync(sc->sc_dmat, sc->ict_dma.map,
-                           &ict[sc->ict_cur] - ict, sizeof(*ict),
-                           BUS_DMASYNC_PREWRITE);
                        sc->ict_cur = (sc->ict_cur + 1) % IWM_ICT_COUNT;
                        tmp = htole32(ict[sc->ict_cur]);
                }
 
+               bus_dmamap_sync(sc->sc_dmat, sc->ict_dma.map,
+                   0, sc->ict_dma.size, BUS_DMASYNC_PREWRITE);
+
                /* this is where the fun begins.  don't ask */
                if (r1 == 0xffffffff)
                        r1 = 0;