dma-mapping: update the old macro DMA_nBIT_MASK related documentations

Update the old macro DMA_nBIT_MASK related documentations

Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 9 insertions, 9 deletions

diff --git a/Documentation/DMA-mapping.txt b/Documentation/DMA-mapping.txt
index b2a4d6d244d9..01f24e94bdb6 100644
--- a/Documentation/DMA-mapping.txt
+++ b/Documentation/DMA-mapping.txt
@@ -136,7 +136,7 @@ exactly why.
 The standard 32-bit addressing PCI device would do something like
 this:
 
-        if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
+        if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
                 printk(KERN_WARNING
                        "mydev: No suitable DMA available.\n");
                 goto ignore_this_device;
@@ -155,9 +155,9 @@ all 64-bits when accessing streaming DMA:
 
         int using_dac;
 
-        if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
+        if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
                 using_dac = 1;
-        } else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
+        } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
                 using_dac = 0;
         } else {
                 printk(KERN_WARNING
@@ -170,14 +170,14 @@ the case would look like this:
 
         int using_dac, consistent_using_dac;
 
-        if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
+        if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
                 using_dac = 1;
                 consistent_using_dac = 1;
-                pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
-        } else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
+                pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
+        } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
                 using_dac = 0;
                 consistent_using_dac = 0;
-                pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
+                pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
         } else {
                 printk(KERN_WARNING
                        "mydev: No suitable DMA available.\n");
@@ -192,7 +192,7 @@ check the return value from pci_set_consistent_dma_mask().
 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, DMA_24BIT_MASK)) {
+        if (pci_set_dma_mask(pdev, DMA_BIT_MASK(24))) {
                 printk(KERN_WARNING
                        "mydev: 24-bit DMA addressing not available.\n");
                 goto ignore_this_device;
@@ -213,7 +213,7 @@ most specific mask.
 
 Here is pseudo-code showing how this might be done:
 
-        #define PLAYBACK_ADDRESS_BITS   DMA_32BIT_MASK
+        #define PLAYBACK_ADDRESS_BITS   DMA_BIT_MASK(32)
         #define RECORD_ADDRESS_BITS     0x00ffffff
 
         struct my_sound_card *card;