diff options
| author |   Christian Borntraeger <borntraeger@de.ibm.com> | 2016-02-02 21:46:33 -0800 |
|---|---|---|
| committer |   Michael S. Tsirkin <mst@redhat.com> | 2016-03-02 17:01:55 +0200 |
| commit | 6aca0503847f6329460b15b3ab2b0e30bb752793 (patch) | |
| tree | 241bc3366e80c345d9a5e86c753e8865441070ce /arch/alpha | |
| parent | dma: Provide simple noop dma ops (diff) | |
| download | linux-dev-6aca0503847f6329460b15b3ab2b0e30bb752793.tar.xz linux-dev-6aca0503847f6329460b15b3ab2b0e30bb752793.zip | |
alpha/dma: use common noop dma ops
Some of the alpha pci noop dma ops are identical to the common ones.
Use them.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'arch/alpha')
| -rw-r--r-- | arch/alpha/kernel/pci-noop.c | 46 |
1 files changed, 4 insertions, 42 deletions
diff --git a/arch/alpha/kernel/pci-noop.c b/arch/alpha/kernel/pci-noop.c index 2b1f4a1e9272..8e735b5e56bd 100644 --- a/arch/alpha/kernel/pci-noop.c +++ b/arch/alpha/kernel/pci-noop.c @@ -123,44 +123,6 @@ static void *alpha_noop_alloc_coherent(struct device *dev, size_t size, return ret; } -static void alpha_noop_free_coherent(struct device *dev, size_t size, - void *cpu_addr, dma_addr_t dma_addr, - struct dma_attrs *attrs) -{ - free_pages((unsigned long)cpu_addr, get_order(size)); -} - -static dma_addr_t alpha_noop_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, - enum dma_data_direction dir, - struct dma_attrs *attrs) -{ - return page_to_pa(page) + offset; -} - -static int alpha_noop_map_sg(struct device *dev, struct scatterlist *sgl, int nents, - enum dma_data_direction dir, struct dma_attrs *attrs) -{ - int i; - struct scatterlist *sg; - - for_each_sg(sgl, sg, nents, i) { - void *va; - - BUG_ON(!sg_page(sg)); - va = sg_virt(sg); - sg_dma_address(sg) = (dma_addr_t)virt_to_phys(va); - sg_dma_len(sg) = sg->length; - } - - return nents; -} - -static int alpha_noop_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - return 0; -} - static int alpha_noop_supported(struct device *dev, u64 mask) { return mask < 0x00ffffffUL ? 0 : 1; @@ -168,10 +130,10 @@ static int alpha_noop_supported(struct device *dev, u64 mask) struct dma_map_ops alpha_noop_ops = { .alloc = alpha_noop_alloc_coherent, - .free = alpha_noop_free_coherent, - .map_page = alpha_noop_map_page, - .map_sg = alpha_noop_map_sg, - .mapping_error = alpha_noop_mapping_error, + .free = dma_noop_free_coherent, + .map_page = dma_noop_map_page, + .map_sg = dma_noop_map_sg, + .mapping_error = dma_noop_mapping_error, .dma_supported = alpha_noop_supported, }; |