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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2010-03-10 15:23:39 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-12 15:52:42 -0800
commit6a1961f49ee8d7339ea2454443dfc0460e0b2748 (patch)
tree057b03936a7dac1fd88d94c963bc52c3619c0022 /Documentation/DMA-API.txt
parente3c4bccabaf3e5c13f4b307c7737cbe8d0cecd02 (diff)
downloadlinux-6a1961f49ee8d7339ea2454443dfc0460e0b2748.tar.gz
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/DMA-API.txt')
-rw-r--r--Documentation/DMA-API.txt10
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/DMA-API.txt b/Documentation/DMA-API.txt
index 29a48fbae77..0fc5728ed48 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)