Replace hard coded DMA masks with #defines from
include/linux/dma-mapping.h
Thanks,
Jon
Signed-off-by: Jon Mason <[email protected]>
diff -r 4d9f2789dcd2 arch/x86_64/kernel/pci-dma.c
--- a/arch/x86_64/kernel/pci-dma.c Wed Apr 12 23:54:39 2006 +0700
+++ b/arch/x86_64/kernel/pci-dma.c Wed Apr 12 15:45:34 2006 -0500
@@ -38,7 +38,7 @@ int force_iommu __read_mostly= 0;
to i386. */
struct device fallback_dev = {
.bus_id = "fallback device",
- .coherent_dma_mask = 0xffffffff,
+ .coherent_dma_mask = DMA_32BIT_MASK,
.dma_mask = &fallback_dev.coherent_dma_mask,
};
@@ -73,7 +73,7 @@ dma_alloc_coherent(struct device *dev, s
dev = &fallback_dev;
dma_mask = dev->coherent_dma_mask;
if (dma_mask == 0)
- dma_mask = 0xffffffff;
+ dma_mask = DMA_32BIT_MASK;
/* Don't invoke OOM killer */
gfp |= __GFP_NORETRY;
@@ -86,7 +86,7 @@ dma_alloc_coherent(struct device *dev, s
larger than 16MB and in this case we have a chance of
finding fitting memory in the next higher zone first. If
not retry with true GFP_DMA. -AK */
- if (dma_mask <= 0xffffffff)
+ if (dma_mask <= DMA_32BIT_MASK)
gfp |= GFP_DMA32;
again:
@@ -107,7 +107,7 @@ dma_alloc_coherent(struct device *dev, s
/* Don't use the 16MB ZONE_DMA unless absolutely
needed. It's better to use remapping first. */
- if (dma_mask < 0xffffffff && !(gfp & GFP_DMA)) {
+ if (dma_mask < DMA_32BIT_MASK && !(gfp & GFP_DMA)) {
gfp = (gfp & ~GFP_DMA32) | GFP_DMA;
goto again;
}
@@ -170,7 +170,7 @@ int dma_supported(struct device *dev, u6
/* Copied from i386. Doesn't make much sense, because it will
only work for pci_alloc_coherent.
The caller just has to use GFP_DMA in this case. */
- if (mask < 0x00ffffff)
+ if (mask < DMA_24BIT_MASK)
return 0;
/* Tell the device to use SAC when IOMMU force is on. This
@@ -185,7 +185,7 @@ int dma_supported(struct device *dev, u6
SAC for these. Assume all masks <= 40 bits are of this
type. Normally this doesn't make any difference, but gives
more gentle handling of IOMMU overflow. */
- if (iommu_sac_force && (mask >= 0xffffffffffULL)) {
+ if (iommu_sac_force && (mask >= DMA_40BIT_MASK)) {
printk(KERN_INFO "%s: Force SAC with mask %Lx\n", dev->bus_id,mask);
return 0;
}
-
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