[src/trunk]: src/sys/arch/arm/allwinner fix off by one in intr handler

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

details:   https://anonhg.NetBSD.org/src/rev/110edbe7607a
branches:  trunk
changeset: 332081:110edbe7607a
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Sat Sep 06 12:48:22 2014 +0000

description:
fix off by one in intr handler

diffstat:

 sys/arch/arm/allwinner/awin_dma.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r f5dfad251e47 -r 110edbe7607a sys/arch/arm/allwinner/awin_dma.c
--- a/sys/arch/arm/allwinner/awin_dma.c Sat Sep 06 12:39:27 2014 +0000
+++ b/sys/arch/arm/allwinner/awin_dma.c Sat Sep 06 12:48:22 2014 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: awin_dma.c,v 1.2 2014/09/06 12:39:27 jmcneill Exp $ */
+/* $NetBSD: awin_dma.c,v 1.3 2014/09/06 12:48:22 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2014 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -29,7 +29,7 @@
 #include "opt_ddb.h"
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: awin_dma.c,v 1.2 2014/09/06 12:39:27 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: awin_dma.c,v 1.3 2014/09/06 12:48:22 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/bus.h>
@@ -160,7 +160,7 @@
        while ((bit = ffs(sta & AWIN_DMA_IRQ_END_MASK)) != 0) {
                mask = __BIT(bit - 1);
                sta &= ~mask;
-               index = (bit / 2) & 7;
+               index = ((bit - 1) / 2) & 7;
                if (mask & AWIN_DMA_IRQ_NDMA) {
                        if (awin_ndma_channels[index].ch_callback == NULL)
                                continue;