The patch titled dma-mapping: blackfin: remove the obsolete and unnecessary DMA API comments has been removed from the -mm tree. Its filename was blackfin-remove-the-obsolete-and-unnecessary-dma-api-comments.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: dma-mapping: blackfin: remove the obsolete and unnecessary DMA API comments From: FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx> pci_dma_sync_single was obsoleted long ago. All the comments are generic, not architecture specific, simply describes some of the DMA-API (and the same comments are in other 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 <fujita.tomonori@xxxxxxxxxxxxx> Cc: Mike Frysinger <vapier@xxxxxxxxxx> Cc: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/blackfin/include/asm/dma-mapping.h | 36 ---------------------- 1 file changed, 36 deletions(-) diff -puN arch/blackfin/include/asm/dma-mapping.h~blackfin-remove-the-obsolete-and-unnecessary-dma-api-comments arch/blackfin/include/asm/dma-mapping.h --- a/arch/blackfin/include/asm/dma-mapping.h~blackfin-remove-the-obsolete-and-unnecessary-dma-api-comments +++ a/arch/blackfin/include/asm/dma-mapping.h @@ -65,13 +65,6 @@ _dma_sync(dma_addr_t addr, size_t size, } } -/* - * 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 pci_unmap_single or pci_dma_sync_single is performed. - */ static inline dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size, enum dma_data_direction dir) @@ -88,14 +81,6 @@ dma_map_page(struct device *dev, struct return dma_map_single(dev, page_address(page) + offset, size, dir); } -/* - * Unmap a single streaming mode DMA translation. The dma_addr and size - * must match what was provided for in a previous pci_map_single call. All - * other usages are undefined. - * - * After this call, reads by the cpu to the buffer are guarenteed to see - * whatever the device wrote there. - */ static inline void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, enum dma_data_direction dir) @@ -110,30 +95,9 @@ dma_unmap_page(struct device *dev, dma_a dma_unmap_single(dev, dma_addr, size, dir); } -/* - * Map a set of buffers described by scatterlist in streaming - * mode for DMA. This is the scather-gather version of the - * above pci_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 pci_map_single are - * the same here. - */ extern int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir); -/* - * Unmap a set of streaming mode DMA translations. - * Again, cpu read rules concerning calls here are the same as for - * pci_unmap_single() above. - */ static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, enum dma_data_direction dir) _ Patches currently in -mm which might be from fujita.tomonori@xxxxxxxxxxxxx are origin.patch linux-next.patch scsi-add-__init-__exit-macros-to-ibmvstgtc.patch ssb-add-dma_dev-to-ssb_device-structure.patch b43legacy-replace-the-ssb_dma-api-with-the-generic-dma-api.patch b43-replace-the-ssb_dma-api-with-the-generic-dma-api.patch b44-replace-the-ssb_dma-api-with-the-generic-dma-api.patch ssb-remove-the-ssb-dma-api.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html