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path: root/drivers/xen/swiotlb-xen.c
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Diffstat (limited to 'drivers/xen/swiotlb-xen.c')
-rw-r--r--drivers/xen/swiotlb-xen.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c
index 58c9365fa217..bd3a10dfac15 100644
--- a/drivers/xen/swiotlb-xen.c
+++ b/drivers/xen/swiotlb-xen.c
@@ -39,6 +39,7 @@
#include <asm/xen/page-coherent.h>
#include <trace/events/swiotlb.h>
+#define MAX_DMA_BITS 32
/*
* Used to do a quick range check in swiotlb_tbl_unmap_single and
* swiotlb_tbl_sync_single_*, to see if the memory was in fact allocated by this
@@ -115,8 +116,6 @@ static int is_xen_swiotlb_buffer(dma_addr_t dma_addr)
return 0;
}
-static int max_dma_bits = 32;
-
static int
xen_swiotlb_fixup(void *buf, size_t size, unsigned long nslabs)
{
@@ -136,7 +135,7 @@ xen_swiotlb_fixup(void *buf, size_t size, unsigned long nslabs)
p + (i << IO_TLB_SHIFT),
get_order(slabs << IO_TLB_SHIFT),
dma_bits, &dma_handle);
- } while (rc && dma_bits++ < max_dma_bits);
+ } while (rc && dma_bits++ < MAX_DMA_BITS);
if (rc)
return rc;