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ANDROID: Export functions to be used with dma_map_ops in modules

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For modules to reuse default dma_map_ops implementations they need to be
exported. Export the following functions:

dma_direct_alloc
dma_direct_free

Bug: 346758754
Bug: 151050914
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Change-Id: Ia77b797fcd909fce01da7431bfbde282dc70b3b3
(cherry picked from commit fd31496dae)
Signed-off-by: Qian-Hao Huang <qhhuang@google.com>
(cherry picked from commit cdc9f6ef94)
(cherry picked from commit 7d50253c27)
This commit is contained in:
Suren Baghdasaryan 2020-03-16 16:39:31 -07:00 committed by Treehugger Robot
parent dc90f62570
commit f84811b9a6
1 changed files with 2 additions and 0 deletions
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2
kernel/dma/direct.c
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@ -321,6 +321,7 @@ out_free_pages:
out_leak_pages:
return NULL;
}
EXPORT_SYMBOL_GPL(dma_direct_alloc);
void dma_direct_free(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_addr, unsigned long attrs)
@ -366,6 +367,7 @@ void dma_direct_free(struct device *dev, size_t size,
__dma_direct_free_pages(dev, dma_direct_to_page(dev, dma_addr), size);
}
EXPORT_SYMBOL_GPL(dma_direct_free);
struct page *dma_direct_alloc_pages(struct device *dev, size_t size,
dma_addr_t *dma_handle, enum dma_data_direction dir, gfp_t gfp)