From 543007eb9747991c19b8461954dcfad129411bda Mon Sep 17 00:00:00 2001
From: ian <ian@FreeBSD.org>
Date: Sun, 24 Jan 2016 18:25:37 +0000
Subject: [PATCH] MFC r289619:

  Follow the advice of the misplaced comment and don't access the map struct
  after freeing it.  Remove the comment whose uselessness has been revealed.
---
 sys/arm/arm/busdma_machdep.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sys/arm/arm/busdma_machdep.c b/sys/arm/arm/busdma_machdep.c
index d24f2d200197..c1307316c13c 100644
--- a/sys/arm/arm/busdma_machdep.c
+++ b/sys/arm/arm/busdma_machdep.c
@@ -786,10 +786,9 @@ bus_dmamem_free(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map)
 		ba = coherent_allocator;
 	else
 		ba = standard_allocator;
-	uma_zfree(dmamap_zone, map);
 
 	free(map->slist, M_DEVBUF);
-	/* Be careful not to access map from here on. */
+	uma_zfree(dmamap_zone, map);
 
 	bufzone = busdma_bufalloc_findzone(ba, dmat->maxsize);