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| author | Tobias Klauser <tklauser@nuerscht.ch> | 2006-04-10 22:54:21 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-04-11 06:18:44 -0700 |
| commit | 56b146d36db933844011d5026c6f55593037c7b8 (patch) | |
| tree | e8b9bed7bf22f658f9b62bf13e512bf08f137efc /Documentation/DMA-mapping.txt | |
| parent | 31cc48bfeef7a021d6e29f3454a4505edcfd6daa (diff) | |
| download | blackbird-op-linux-56b146d36db933844011d5026c6f55593037c7b8.tar.gz blackbird-op-linux-56b146d36db933844011d5026c6f55593037c7b8.zip | |
[PATCH] Last DMA_xBIT_MASK cleanups
These are the last conversions of pci_set_dma_mask(),
pci_set_consistent_dma_mask() and pci_dma_supported() to use DMA_xBIT_MASK
constants from linux/dma-mapping.h
Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation/DMA-mapping.txt')
| -rw-r--r-- | Documentation/DMA-mapping.txt | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/DMA-mapping.txt b/Documentation/DMA-mapping.txt index ee4bb73683cd..10bf4deb96aa 100644 --- a/Documentation/DMA-mapping.txt +++ b/Documentation/DMA-mapping.txt @@ -194,7 +194,7 @@ document for how to handle this case. Finally, if your device can only drive the low 24-bits of address during PCI bus mastering you might do something like: - if (pci_set_dma_mask(pdev, 0x00ffffff)) { + if (pci_set_dma_mask(pdev, DMA_24BIT_MASK)) { printk(KERN_WARNING "mydev: 24-bit DMA addressing not available.\n"); goto ignore_this_device; @@ -212,7 +212,7 @@ functions (for example a sound card provides playback and record functions) and the various different functions have _different_ DMA addressing limitations, you may wish to probe each mask and only provide the functionality which the machine can handle. It -is important that the last call to pci_set_dma_mask() be for the +is important that the last call to pci_set_dma_mask() be for the most specific mask. Here is pseudo-code showing how this might be done: |
