From 59a5c7f90ede7459870a149c9d54fa2cd51a0b87 Mon Sep 17 00:00:00 2001
From: Olivier Houchard <cognet@FreeBSD.org>
Date: Fri, 15 Jan 2010 12:39:48 +0000
Subject: [PATCH] Do not free the dmamap if it is still busy.

Submitted by:	Mark Tinguely
MFC after:	3 days
---
 sys/arm/arm/busdma_machdep.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/arm/arm/busdma_machdep.c b/sys/arm/arm/busdma_machdep.c
index cf4873f50945..708067146b9f 100644
--- a/sys/arm/arm/busdma_machdep.c
+++ b/sys/arm/arm/busdma_machdep.c
@@ -555,12 +555,12 @@ int
 bus_dmamap_destroy(bus_dma_tag_t dmat, bus_dmamap_t map)
 {
 
-	_busdma_free_dmamap(map);
 	if (STAILQ_FIRST(&map->bpages) != NULL) {
 		CTR3(KTR_BUSDMA, "%s: tag %p error %d",
 		    __func__, dmat, EBUSY);
 		return (EBUSY);
 	}
+	_busdma_free_dmamap(map);
 	if (dmat->bounce_zone)
 		dmat->bounce_zone->map_count--;
         dmat->map_count--;