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| author | David S. Miller <davem@davemloft.net> | 2008-10-11 12:39:35 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-10-11 12:39:35 -0700 |
| commit | 56c5d900dbb8e042bfad035d18433476931d8f93 (patch) | |
| tree | 00b793965beeef10db03e0ff021d2d965c410759 /include/linux/dma-mapping.h | |
| parent | 4dd95b63ae25c5cad6986829b5e8788e9faa0330 (diff) | |
| parent | ead9d23d803ea3a73766c3cb27bf7563ac8d7266 (diff) | |
| download | op-kernel-dev-56c5d900dbb8e042bfad035d18433476931d8f93.zip op-kernel-dev-56c5d900dbb8e042bfad035d18433476931d8f93.tar.gz | |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
sound/core/memalloc.c
Diffstat (limited to 'include/linux/dma-mapping.h')
| -rw-r--r-- | include/linux/dma-mapping.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 952e0f8..ba9114e 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -48,6 +48,11 @@ static inline int is_device_dma_capable(struct device *dev) return dev->dma_mask != NULL && *dev->dma_mask != DMA_MASK_NONE; } +static inline int is_buffer_dma_capable(u64 mask, dma_addr_t addr, size_t size) +{ + return addr + size <= mask; +} + #ifdef CONFIG_HAS_DMA #include <asm/dma-mapping.h> #else @@ -58,6 +63,13 @@ static inline int is_device_dma_capable(struct device *dev) #define dma_sync_single dma_sync_single_for_cpu #define dma_sync_sg dma_sync_sg_for_cpu +static inline u64 dma_get_mask(struct device *dev) +{ + if (dev && dev->dma_mask && *dev->dma_mask) + return *dev->dma_mask; + return DMA_32BIT_MASK; +} + extern u64 dma_get_required_mask(struct device *dev); static inline unsigned int dma_get_max_seg_size(struct device *dev) |
