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Diffstat (limited to 'kernel/dma-coherent.c')
-rw-r--r--kernel/dma-coherent.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/kernel/dma-coherent.c b/kernel/dma-coherent.c
index 91e96950cd52..f013a0c2e111 100644
--- a/kernel/dma-coherent.c
+++ b/kernel/dma-coherent.c
@@ -92,7 +92,7 @@ void *dma_mark_declared_memory_occupied(struct device *dev,
EXPORT_SYMBOL(dma_mark_declared_memory_occupied);
/**
- * Try to allocate memory from the per-device coherent area.
+ * dma_alloc_from_coherent() - try to allocate memory from the per-device coherent area
*
* @dev: device from which we allocate memory
* @size: size of requested memory area
@@ -100,11 +100,11 @@ EXPORT_SYMBOL(dma_mark_declared_memory_occupied);
* @ret: This pointer will be filled with the virtual address
* to allocated area.
*
- * This function should be only called from per-arch %dma_alloc_coherent()
+ * This function should be only called from per-arch dma_alloc_coherent()
* to support allocation from per-device coherent memory pools.
*
* Returns 0 if dma_alloc_coherent should continue with allocating from
- * generic memory areas, or !0 if dma_alloc_coherent should return %ret.
+ * generic memory areas, or !0 if dma_alloc_coherent should return @ret.
*/
int dma_alloc_from_coherent(struct device *dev, ssize_t size,
dma_addr_t *dma_handle, void **ret)
@@ -124,9 +124,10 @@ int dma_alloc_from_coherent(struct device *dev, ssize_t size,
}
return (mem != NULL);
}
+EXPORT_SYMBOL(dma_alloc_from_coherent);
/**
- * Try to free the memory allocated from per-device coherent memory pool.
+ * dma_release_from_coherent() - try to free the memory allocated from per-device coherent memory pool
* @dev: device from which the memory was allocated
* @order: the order of pages allocated
* @vaddr: virtual address of allocated pages
@@ -135,7 +136,7 @@ int dma_alloc_from_coherent(struct device *dev, ssize_t size,
* coherent memory pool and if so, releases that memory.
*
* Returns 1 if we correctly released the memory, or 0 if
- * %dma_release_coherent() should proceed with releasing memory from
+ * dma_release_coherent() should proceed with releasing memory from
* generic pools.
*/
int dma_release_from_coherent(struct device *dev, int order, void *vaddr)
@@ -151,3 +152,4 @@ int dma_release_from_coherent(struct device *dev, int order, void *vaddr)
}
return 0;
}
+EXPORT_SYMBOL(dma_release_from_coherent);