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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-12-09 17:14:38 +1100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-12-09 17:14:38 +1100 |
| commit | bcd6acd51f3d4d1ada201e9bc5c40a31d6d80c71 (patch) | |
| tree | 2f6dffd2d3e4dd67355a224de7e7a960335a92fd /arch/arm/common/dmabounce.c | |
| parent | 11c34c7deaeeebcee342cbc35e1bb2a6711b2431 (diff) | |
| parent | 3ff6a468b45b5dfeb0e903e56f4eb27d34b2437c (diff) | |
Merge commit 'origin/master' into next
Conflicts:
include/linux/kvm.h
Diffstat (limited to 'arch/arm/common/dmabounce.c')
| -rw-r--r-- | arch/arm/common/dmabounce.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/arch/arm/common/dmabounce.c b/arch/arm/common/dmabounce.c index 734ac913599..5a375e5fef2 100644 --- a/arch/arm/common/dmabounce.c +++ b/arch/arm/common/dmabounce.c @@ -342,6 +342,22 @@ dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size, } EXPORT_SYMBOL(dma_map_single); +/* + * see if a mapped address was really a "safe" buffer and if so, copy + * the data from the safe buffer back to the unsafe buffer and free up + * the safe buffer. (basically return things back to the way they + * should be) + */ +void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, + enum dma_data_direction dir) +{ + dev_dbg(dev, "%s(ptr=%p,size=%d,dir=%x)\n", + __func__, (void *) dma_addr, size, dir); + + unmap_single(dev, dma_addr, size, dir); +} +EXPORT_SYMBOL(dma_unmap_single); + dma_addr_t dma_map_page(struct device *dev, struct page *page, unsigned long offset, size_t size, enum dma_data_direction dir) { @@ -366,8 +382,7 @@ EXPORT_SYMBOL(dma_map_page); * the safe buffer. (basically return things back to the way they * should be) */ - -void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, +void dma_unmap_page(struct device *dev, dma_addr_t dma_addr, size_t size, enum dma_data_direction dir) { dev_dbg(dev, "%s(ptr=%p,size=%d,dir=%x)\n", @@ -375,7 +390,7 @@ void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, unmap_single(dev, dma_addr, size, dir); } -EXPORT_SYMBOL(dma_unmap_single); +EXPORT_SYMBOL(dma_unmap_page); int dmabounce_sync_for_cpu(struct device *dev, dma_addr_t addr, unsigned long off, size_t sz, enum dma_data_direction dir) |