Author: sephe
Date: Tue May 24 05:26:52 2016
New Revision: 300568
URL: https://svnweb.freebsd.org/changeset/base/300568

Log:
  hyperv/busdma: Take BUS_DMA_ZERO into account
  
  MFC after:    1 week
  Sponsored by: Microsoft OSTC
  Differential Revision:        https://reviews.freebsd.org/D6499

Modified:
  head/sys/dev/hyperv/vmbus/hyperv_busdma.c

Modified: head/sys/dev/hyperv/vmbus/hyperv_busdma.c
==============================================================================
--- head/sys/dev/hyperv/vmbus/hyperv_busdma.c   Tue May 24 05:18:26 2016        
(r300567)
+++ head/sys/dev/hyperv/vmbus/hyperv_busdma.c   Tue May 24 05:26:52 2016        
(r300568)
@@ -35,7 +35,7 @@ __FBSDID("$FreeBSD$");
 
 #include <dev/hyperv/include/hyperv_busdma.h>
 
-#define HYPERV_DMA_WAITMASK    (BUS_DMA_WAITOK | BUS_DMA_NOWAIT)
+#define HYPERV_DMA_MASK        (BUS_DMA_WAITOK | BUS_DMA_NOWAIT | BUS_DMA_ZERO)
 
 void
 hyperv_dma_map_paddr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
@@ -73,7 +73,7 @@ hyperv_dmamem_alloc(bus_dma_tag_t parent
                return NULL;
 
        error = bus_dmamem_alloc(dma->hv_dtag, &ret,
-           (flags & HYPERV_DMA_WAITMASK) | BUS_DMA_COHERENT, &dma->hv_dmap);
+           (flags & HYPERV_DMA_MASK) | BUS_DMA_COHERENT, &dma->hv_dmap);
        if (error) {
                bus_dma_tag_destroy(dma->hv_dtag);
                return NULL;
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