use DMA_BIT_MASK instead of inline constant

[sfrench/cifs-2.6.git] / Documentation / DMA-mapping.txt

diff --git a/Documentation/DMA-mapping.txt b/Documentation/DMA-mapping.txt
index 8378a58f28227350bc911af28c103dd967c26a4a..ecad88d9fe5900a86eb4fc44066326caf2639be2 100644 (file)
--- a/Documentation/DMA-mapping.txt
+++ b/Documentation/DMA-mapping.txt
@@ -214,7 +214,7 @@ most specific mask.
 Here is pseudo-code showing how this might be done:
 
        #define PLAYBACK_ADDRESS_BITS   DMA_BIT_MASK(32)
-       #define RECORD_ADDRESS_BITS     0x00ffffff
+       #define RECORD_ADDRESS_BITS     DMA_BIT_MASK(24)
 
        struct my_sound_card *card;
        struct pci_dev *pdev;