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Commit 31d1b493 authored by Michael Ellerman's avatar Michael Ellerman Committed by Paul Mackerras
Browse files

[POWERPC] Remove the global dma_direct_offset 



We no longer need the global dma_direct_offset, update the comment to
reflect the new reality.

Signed-off-by: default avatarMichael Ellerman <michael@ellerman.id.au>
Acked-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 15c60cc4

arch/powerpc/kernel/dma_64.c

+4 −3
Original line number Diff line number Diff line
@@ -112,10 +112,11 @@ EXPORT_SYMBOL(dma_iommu_ops); 
/*

 * Generic direct DMA implementation

 *

 * This implementation supports a global offset that can be applied if

 * the address at which memory is visible to devices is not 0.

 * This implementation supports a per-device offset that can be applied if

 * the address at which memory is visible to devices is not 0. Platform code

 * can set archdata.dma_data to an unsigned long holding the offset. By

 * default the offset is zero.

 */

unsigned long dma_direct_offset;



static unsigned long get_dma_direct_offset(struct device *dev)

{

include/asm-powerpc/dma-mapping.h

+0 −2
Original line number Diff line number Diff line
@@ -189,8 +189,6 @@ static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sg, 
extern struct dma_mapping_ops dma_iommu_ops;

extern struct dma_mapping_ops dma_direct_ops;



extern unsigned long dma_direct_offset;



#else /* CONFIG_PPC64 */



#define dma_supported(dev, mask)	(1)