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authorMatthias Gehre <M.Gehre@gmx.de>2006-03-28 01:56:48 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-28 09:16:07 -0800
commit910638ae7ed4be27d6af55f6c9b5bf54b838e78b (patch)
tree5eda3cfd0e312c8b0916f6d5eb1cd98225e67891 /Documentation/DMA-mapping.txt
parent60c904ae5bded8bb71f7bff7d63f2a6959d2a8e4 (diff)
downloadlinux-910638ae7ed4be27d6af55f6c9b5bf54b838e78b.tar.bz2
[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.txt2
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