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>
diff --git a/Documentation/DMA-mapping.txt b/Documentation/DMA-mapping.txt
index b2a4d6d..01f24e9 100644
--- a/Documentation/DMA-mapping.txt
+++ b/Documentation/DMA-mapping.txt
@@ -136,7 +136,7 @@
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 @@
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 @@
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 @@
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 @@
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;