summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/kernel/dma.c
diff options
context:
space:
mode:
authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-10-09 19:06:24 +0200
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-10-14 01:35:26 +0200
commit8aa2659009714cf5f9ffe7f3e16ccfa8ff0e0d61 (patch)
tree070526522368d43ab8e0332a849474b44c80e980 /arch/powerpc/kernel/dma.c
parentMerge commit 'kumar/kumar-next' (diff)
downloadlinux-8aa2659009714cf5f9ffe7f3e16ccfa8ff0e0d61.tar.xz
linux-8aa2659009714cf5f9ffe7f3e16ccfa8ff0e0d61.zip
powerpc: Fix DMA offset for non-coherent DMA
After Becky's work we can almost have different DMA offsets between on-chip devices and PCI. Almost because there's a problem with the non-coherent DMA code that basically ignores the programmed offset to use the global one for everything. This fixes it. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/dma.c')
-rw-r--r--arch/powerpc/kernel/dma.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/dma.c b/arch/powerpc/kernel/dma.c
index 41fdd48bf433..1562daf8839a 100644
--- a/arch/powerpc/kernel/dma.c
+++ b/arch/powerpc/kernel/dma.c
@@ -30,11 +30,15 @@ static unsigned long get_dma_direct_offset(struct device *dev)
void *dma_direct_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag)
{
+ void *ret;
#ifdef CONFIG_NOT_COHERENT_CACHE
- return __dma_alloc_coherent(size, dma_handle, flag);
+ ret = __dma_alloc_coherent(size, dma_handle, flag);
+ if (ret == NULL)
+ return NULL;
+ *dma_handle += get_dma_direct_offset(dev);
+ return ret;
#else
struct page *page;
- void *ret;
int node = dev_to_node(dev);
/* ignore region specifiers */