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Commit e6fa0dc8 authored by Souptick Joarder's avatar Souptick Joarder Committed by Boris Ostrovsky
Browse files

swiotlb-xen: Convert to use macro 



Rather than using static int max_dma_bits, this
can be coverted to use as macro.

Signed-off-by: default avatarSouptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: default avatarJuergen Gross <jgross@suse.com>
Signed-off-by: default avatarBoris Ostrovsky <boris.ostrovsky@oracle.com>
parent 089cf7f6

drivers/xen/swiotlb-xen.c

+2 −3
Original line number Original line Diff line number Diff line
@@ -38,6 +38,7 @@ 
#include <asm/xen/page-coherent.h>

#include <asm/xen/page-coherent.h>





#include <trace/events/swiotlb.h>

#include <trace/events/swiotlb.h>

#define MAX_DMA_BITS 32

/*

/*

 * Used to do a quick range check in swiotlb_tbl_unmap_single and

 * 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

 * swiotlb_tbl_sync_single_*, to see if the memory was in fact allocated by this
@@ -114,8 +115,6 @@ static int is_xen_swiotlb_buffer(dma_addr_t dma_addr) 
	return 0;

	return 0;

}

}





static int max_dma_bits = 32;



static int

static int

xen_swiotlb_fixup(void *buf, size_t size, unsigned long nslabs)

xen_swiotlb_fixup(void *buf, size_t size, unsigned long nslabs)

{

{
@@ -135,7 +134,7 @@ xen_swiotlb_fixup(void *buf, size_t size, unsigned long nslabs) 
				p + (i << IO_TLB_SHIFT),

				p + (i << IO_TLB_SHIFT),

				get_order(slabs << IO_TLB_SHIFT),

				get_order(slabs << IO_TLB_SHIFT),

				dma_bits, &dma_handle);

				dma_bits, &dma_handle);

		} while (rc && dma_bits++ < max_dma_bits);

		} while (rc && dma_bits++ < MAX_DMA_BITS);

		if (rc)

		if (rc)

			return rc;

			return rc;