diff options
| author | Matthias Gehre <M.Gehre@gmx.de> | 2006-03-28 01:56:48 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-28 09:16:07 -0800 |
| commit | 910638ae7ed4be27d6af55f6c9b5bf54b838e78b (patch) | |
| tree | 5eda3cfd0e312c8b0916f6d5eb1cd98225e67891 /Documentation/DMA-mapping.txt | |
| parent | 60c904ae5bded8bb71f7bff7d63f2a6959d2a8e4 (diff) | |
| download | lwn-910638ae7ed4be27d6af55f6c9b5bf54b838e78b.tar.gz lwn-910638ae7ed4be27d6af55f6c9b5bf54b838e78b.zip | |
[PATCH] Replace 0xff.. with correct DMA_xBIT_MASK
Replace all occurences of 0xff.. in calls to function pci_set_dma_mask()
and pci_set_consistant_dma_mask() with the corresponding DMA_xBIT_MASK from
linux/dma-mapping.h.
Signed-off-by: Matthias Gehre <M.Gehre@gmx.de>
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 | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/DMA-mapping.txt b/Documentation/DMA-mapping.txt index 684557474c15..ee4bb73683cd 100644 --- a/Documentation/DMA-mapping.txt +++ b/Documentation/DMA-mapping.txt @@ -199,6 +199,8 @@ address during PCI bus mastering you might do something like: "mydev: 24-bit DMA addressing not available.\n"); goto ignore_this_device; } +[Better use DMA_24BIT_MASK instead of 0x00ffffff. +See linux/include/dma-mapping.h for reference.] When pci_set_dma_mask() is successful, and returns zero, the PCI layer saves away this mask you have provided. The PCI layer will use this |