1 files changed, 1 insertions, 1 deletions

diff --git a/Documentation/DMA-mapping.txt b/Documentation/DMA-mapping.txt
index 8378a58f2822..ecad88d9fe59 100644
--- 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;