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| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2010-03-11 00:23:39 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-13 00:52:42 +0100 |
| commit | 6a1961f49ee8d7339ea2454443dfc0460e0b2748 (patch) | |
| tree | 057b03936a7dac1fd88d94c963bc52c3619c0022 /Documentation | |
| parent | dma-mapping: pci: convert pci_set_dma_mask to call dma_set_mask (diff) | |
| download | linux-6a1961f49ee8d7339ea2454443dfc0460e0b2748.tar.xz linux-6a1961f49ee8d7339ea2454443dfc0460e0b2748.zip | |
dma-mapping: dma-mapping.h: add dma_set_coherent_mask
dma_set_coherent_mask corresponds to pci_set_consistent_dma_mask. This is
necessary to move to the generic device model DMA API from the PCI bus
specific API in the long term.
dma_set_coherent_mask works in the exact same way that
pci_set_consistent_dma_mask does. So this patch also changes
pci_set_consistent_dma_mask to call dma_set_coherent_mask.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: James Bottomley <James.Bottomley@suse.de>
Cc: David S. Miller <davem@davemloft.net>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Greg KH <greg@kroah.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/DMA-API.txt | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/DMA-API.txt b/Documentation/DMA-API.txt index 29a48fbae779..0fc5728ed487 100644 --- a/Documentation/DMA-API.txt +++ b/Documentation/DMA-API.txt @@ -167,6 +167,16 @@ parameters if it is. Returns: 0 if successful and a negative error if not. +int +dma_set_coherent_mask(struct device *dev, u64 mask) +int +pci_set_consistent_dma_mask(struct pci_device *dev, u64 mask) + +Checks to see if the mask is possible and updates the device +parameters if it is. + +Returns: 0 if successful and a negative error if not. + u64 dma_get_required_mask(struct device *dev) |