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From: Bernhard Schmidt <bschmidt@FreeBSD.org>
Date: Sat, 16 Apr 2011 10:35:02 +0000 (UTC)
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Subject: svn commit: r220701 - head/sys/dev/iwn
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Author: bschmidt
Date: Sat Apr 16 10:35:02 2011
New Revision: 220701
URL: http://svn.freebsd.org/changeset/base/220701

Log:
  Make sure to destroy all DMA tags and maps.

Modified:
  head/sys/dev/iwn/if_iwn.c

Modified: head/sys/dev/iwn/if_iwn.c
==============================================================================
--- head/sys/dev/iwn/if_iwn.c	Sat Apr 16 10:32:46 2011	(r220700)
+++ head/sys/dev/iwn/if_iwn.c	Sat Apr 16 10:35:02 2011	(r220701)
@@ -1159,16 +1159,20 @@ fail:
 static void
 iwn_dma_contig_free(struct iwn_dma_info *dma)
 {
-	if (dma->tag != NULL) {
-		if (dma->map != NULL) {
-			if (dma->paddr == 0) {
-				bus_dmamap_sync(dma->tag, dma->map,
-				    BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
-				bus_dmamap_unload(dma->tag, dma->map);
-			}
+	if (dma->map != NULL) {
+		if (dma->vaddr != NULL) {
+			bus_dmamap_sync(dma->tag, dma->map,
+			    BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
+			bus_dmamap_unload(dma->tag, dma->map);
 			bus_dmamem_free(dma->tag, &dma->vaddr, dma->map);
+			dma->vaddr = NULL;
 		}
+		bus_dmamap_destroy(dma->tag, dma->map);
+		dma->map = NULL;
+	}
+	if (dma->tag != NULL) {
 		bus_dma_tag_destroy(dma->tag);
+		dma->tag = NULL;
 	}
 }
 
@@ -1360,6 +1364,10 @@ iwn_free_rx_ring(struct iwn_softc *sc, s
 		if (data->map != NULL)
 			bus_dmamap_destroy(ring->data_dmat, data->map);
 	}
+	if (ring->data_dmat != NULL) {
+		bus_dma_tag_destroy(ring->data_dmat);
+		ring->data_dmat = NULL;
+	}
 }
 
 static int
@@ -1479,6 +1487,10 @@ iwn_free_tx_ring(struct iwn_softc *sc, s
 		if (data->map != NULL)
 			bus_dmamap_destroy(ring->data_dmat, data->map);
 	}
+	if (ring->data_dmat != NULL) {
+		bus_dma_tag_destroy(ring->data_dmat);
+		ring->data_dmat = NULL;
+	}
 }
 
 static void