c6x: Provide dummy dma_mmap_coherent() and dma_get_sgtable()
authorGeert Uytterhoeven <geert@linux-m68k.org>
Sun, 27 Jan 2013 09:33:22 +0000 (09:33 +0000)
committerMarek Szyprowski <m.szyprowski@samsung.com>
Tue, 29 Jan 2013 07:11:14 +0000 (08:11 +0100)
commit18180651fd156f33be363b0c952efb4d29812b38
tree4d97487a8853af64e0be72478c2512c0d51af3fb
parentafbe21d8b3aedc9d9df0110eaad3d3a816db55ad
c6x: Provide dummy dma_mmap_coherent() and dma_get_sgtable()

c6x/allmodconfig (assumed):

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>.

C6x 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.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: linux-c6x-dev@linux-c6x.org
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
arch/c6x/include/asm/dma-mapping.h