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Commit 59bb8407 authored by Geert Uytterhoeven's avatar Geert Uytterhoeven Committed by Marek Szyprowski
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parisc: Provide dummy dma_mmap_coherent() and dma_get_sgtable() 



parisc/allmodconfig:

drivers/media/v4l2-core/videobuf2-dma-contig.c: In function ‘vb2_dc_mmap’:
drivers/media/v4l2-core/videobuf2-dma-contig.c:204: error: implicit declaration of function ‘dma_mmap_coherent’
drivers/media/v4l2-core/videobuf2-dma-contig.c: In function ‘vb2_dc_get_base_sgt’:
drivers/media/v4l2-core/videobuf2-dma-contig.c:387: error: implicit declaration of function ‘dma_get_sgtable’

For architectures using dma_map_ops, dma_mmap_coherent() and
dma_get_sgtable() are provided in <asm-generic/dma-mapping-common.h>.

Parisc does not use dma_map_ops, hence it should implement them itself.
For now, use dummy implementations that just return -EINVAL, until the
API has been finalized, as it cannot be supported on PA-RISC as-is.

Signed-off-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: James Bottomley <James.Bottomley@hansenpartnership.com>
Cc: linux-parisc@vger.kernel.org
Signed-off-by: default avatarMarek Szyprowski <m.szyprowski@samsung.com>
parent 90582b2a

arch/parisc/include/asm/dma-mapping.h

+15 −0
Original line number Diff line number Diff line
@@ -238,4 +238,19 @@ void * sba_get_iommu(struct parisc_device *dev); 
/* At the moment, we panic on error for IOMMU resource exaustion */

#define dma_mapping_error(dev, x)	0



/* This API cannot be supported on PA-RISC */

static inline int dma_mmap_coherent(struct device *dev,

				    struct vm_area_struct *vma, void *cpu_addr,

				    dma_addr_t dma_addr, size_t size)

{

	return -EINVAL;

}



static inline int dma_get_sgtable(struct device *dev, struct sg_table *sgt,

				  void *cpu_addr, dma_addr_t dma_addr,

				  size_t size)

{

	return -EINVAL;

}



#endif