From 027491f4b2ff15fe5cc36c900cb2d1fdb35cefdd Mon Sep 17 00:00:00 2001 From: FUJITA Tomonori Date: Wed, 10 Mar 2010 15:23:32 -0800 Subject: dma-mapping: frv: remove the obsolete and unnecessary DMA API comments pci_dma_sync_single was obsoleted long ago. All the comments are generic, not architecture specific, simply describes some of the DMA-API (and frv has the same comments in three files). Documentation/DMA-API.txt have more detailed descriptions. This removes the above obsolete and unnecessary DMA API comments. Let's describe the DMA API in only Documentation/DMA-API.txt. Signed-off-by: FUJITA Tomonori Cc: David Howells Cc: Jesse Barnes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/frv/mb93090-mb00/pci-dma-nommu.c | 30 ------------------------------ 1 file changed, 30 deletions(-) (limited to 'arch/frv/mb93090-mb00/pci-dma-nommu.c') diff --git a/arch/frv/mb93090-mb00/pci-dma-nommu.c b/arch/frv/mb93090-mb00/pci-dma-nommu.c index 4e1ba0b1544..e47857f889b 100644 --- a/arch/frv/mb93090-mb00/pci-dma-nommu.c +++ b/arch/frv/mb93090-mb00/pci-dma-nommu.c @@ -106,13 +106,6 @@ void dma_free_coherent(struct device *hwdev, size_t size, void *vaddr, dma_addr_ EXPORT_SYMBOL(dma_free_coherent); -/* - * Map a single buffer of the indicated size for DMA in streaming mode. - * The 32-bit bus address to use is returned. - * - * Once the device is given the dma address, the device owns this memory - * until either dma_unmap_single or pci_dma_sync_single is performed. - */ dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size, enum dma_data_direction direction) { @@ -125,22 +118,6 @@ dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size, EXPORT_SYMBOL(dma_map_single); -/* - * Map a set of buffers described by scatterlist in streaming - * mode for DMA. This is the scather-gather version of the - * above dma_map_single interface. Here the scatter gather list - * elements are each tagged with the appropriate dma address - * and length. They are obtained via sg_dma_{address,length}(SG). - * - * NOTE: An implementation may be able to use a smaller number of - * DMA address/length pairs than there are SG table elements. - * (for example via virtual mapping capabilities) - * The routine returns the number of addr/length pairs actually - * used, at most nents. - * - * Device ownership issues as mentioned above for dma_map_single are - * the same here. - */ int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction direction) { @@ -157,13 +134,6 @@ int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, EXPORT_SYMBOL(dma_map_sg); -/* - * Map a single page of the indicated size for DMA in streaming mode. - * The 32-bit bus address to use is returned. - * - * Device ownership issues as mentioned above for dma_map_single are - * the same here. - */ dma_addr_t dma_map_page(struct device *dev, struct page *page, unsigned long offset, size_t size, enum dma_data_direction direction) { -- cgit v1.2.3