aboutsummaryrefslogtreecommitdiff
path: root/arch/powerpc/kernel/dma_64.c
diff options
context:
space:
mode:
authorStefan Richter <stefanr@s5r6.in-berlin.de>2006-09-23 14:34:10 +0200
committerStefan Richter <stefanr@s5r6.in-berlin.de>2006-09-23 14:34:10 +0200
commit919251758195919ae3568021bc221e4f8c4b20eb (patch)
tree81137a037ff8e6c91cc8de72d568275605c653c5 /arch/powerpc/kernel/dma_64.c
parentc394f1eafef61c6666f5876afde6110a276c4c9f (diff)
parent3eeab61aa3ddd3c0bedb7449ada1599de22fdb5a (diff)
Merge branch 'mainline' into upstream-linus
Diffstat (limited to 'arch/powerpc/kernel/dma_64.c')
-rw-r--r--arch/powerpc/kernel/dma_64.c65
1 files changed, 28 insertions, 37 deletions
diff --git a/arch/powerpc/kernel/dma_64.c b/arch/powerpc/kernel/dma_64.c
index 36aaa7663f0..6c168f6ea14 100644
--- a/arch/powerpc/kernel/dma_64.c
+++ b/arch/powerpc/kernel/dma_64.c
@@ -35,10 +35,9 @@ int dma_supported(struct device *dev, u64 mask)
{
struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
- if (dma_ops)
- return dma_ops->dma_supported(dev, mask);
- BUG();
- return 0;
+ BUG_ON(!dma_ops);
+
+ return dma_ops->dma_supported(dev, mask);
}
EXPORT_SYMBOL(dma_supported);
@@ -66,10 +65,9 @@ void *dma_alloc_coherent(struct device *dev, size_t size,
{
struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
- if (dma_ops)
- return dma_ops->alloc_coherent(dev, size, dma_handle, flag);
- BUG();
- return NULL;
+ BUG_ON(!dma_ops);
+
+ return dma_ops->alloc_coherent(dev, size, dma_handle, flag);
}
EXPORT_SYMBOL(dma_alloc_coherent);
@@ -78,10 +76,9 @@ void dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
{
struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
- if (dma_ops)
- dma_ops->free_coherent(dev, size, cpu_addr, dma_handle);
- else
- BUG();
+ BUG_ON(!dma_ops);
+
+ dma_ops->free_coherent(dev, size, cpu_addr, dma_handle);
}
EXPORT_SYMBOL(dma_free_coherent);
@@ -90,10 +87,9 @@ dma_addr_t dma_map_single(struct device *dev, void *cpu_addr, size_t size,
{
struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
- if (dma_ops)
- return dma_ops->map_single(dev, cpu_addr, size, direction);
- BUG();
- return (dma_addr_t)0;
+ BUG_ON(!dma_ops);
+
+ return dma_ops->map_single(dev, cpu_addr, size, direction);
}
EXPORT_SYMBOL(dma_map_single);
@@ -102,10 +98,9 @@ void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
{
struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
- if (dma_ops)
- dma_ops->unmap_single(dev, dma_addr, size, direction);
- else
- BUG();
+ BUG_ON(!dma_ops);
+
+ dma_ops->unmap_single(dev, dma_addr, size, direction);
}
EXPORT_SYMBOL(dma_unmap_single);
@@ -115,11 +110,10 @@ dma_addr_t dma_map_page(struct device *dev, struct page *page,
{
struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
- if (dma_ops)
- return dma_ops->map_single(dev,
- (page_address(page) + offset), size, direction);
- BUG();
- return (dma_addr_t)0;
+ BUG_ON(!dma_ops);
+
+ return dma_ops->map_single(dev, page_address(page) + offset, size,
+ direction);
}
EXPORT_SYMBOL(dma_map_page);
@@ -128,10 +122,9 @@ void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
{
struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
- if (dma_ops)
- dma_ops->unmap_single(dev, dma_address, size, direction);
- else
- BUG();
+ BUG_ON(!dma_ops);
+
+ dma_ops->unmap_single(dev, dma_address, size, direction);
}
EXPORT_SYMBOL(dma_unmap_page);
@@ -140,10 +133,9 @@ int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
{
struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
- if (dma_ops)
- return dma_ops->map_sg(dev, sg, nents, direction);
- BUG();
- return 0;
+ BUG_ON(!dma_ops);
+
+ return dma_ops->map_sg(dev, sg, nents, direction);
}
EXPORT_SYMBOL(dma_map_sg);
@@ -152,9 +144,8 @@ void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
{
struct dma_mapping_ops *dma_ops = get_dma_ops(dev);
- if (dma_ops)
- dma_ops->unmap_sg(dev, sg, nhwentries, direction);
- else
- BUG();
+ BUG_ON(!dma_ops);
+
+ dma_ops->unmap_sg(dev, sg, nhwentries, direction);
}
EXPORT_SYMBOL(dma_unmap_sg);