diff options
Diffstat (limited to 'mm/dmapool.c')
| -rw-r--r-- | mm/dmapool.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/mm/dmapool.c b/mm/dmapool.c index 6d4b97e7e9e9..76a160083506 100644 --- a/mm/dmapool.c +++ b/mm/dmapool.c @@ -114,10 +114,9 @@ static DEVICE_ATTR(pools, 0444, show_pools, NULL); * @size: size of the blocks in this pool. * @align: alignment requirement for blocks; must be a power of two * @boundary: returned blocks won't cross this power of two boundary - * Context: !in_interrupt() + * Context: not in_interrupt() * - * Returns a dma allocation pool with the requested characteristics, or - * null if one can't be created. Given one of these pools, dma_pool_alloc() + * Given one of these pools, dma_pool_alloc() * may be used to allocate memory. Such memory will all have "consistent" * DMA mappings, accessible by the device and its driver without using * cache flushing primitives. The actual size of blocks allocated may be @@ -127,6 +126,9 @@ static DEVICE_ATTR(pools, 0444, show_pools, NULL); * cross that size boundary. This is useful for devices which have * addressing restrictions on individual DMA transfers, such as not crossing * boundaries of 4KBytes. + * + * Return: a dma allocation pool with the requested characteristics, or + * %NULL if one can't be created. */ struct dma_pool *dma_pool_create(const char *name, struct device *dev, size_t size, size_t align, size_t boundary) @@ -313,7 +315,7 @@ EXPORT_SYMBOL(dma_pool_destroy); * @mem_flags: GFP_* bitmask * @handle: pointer to dma address of block * - * This returns the kernel virtual address of a currently unused block, + * Return: the kernel virtual address of a currently unused block, * and reports its dma address through the handle. * If such a memory block can't be allocated, %NULL is returned. */ @@ -498,6 +500,9 @@ static int dmam_pool_match(struct device *dev, void *res, void *match_data) * * Managed dma_pool_create(). DMA pool created with this function is * automatically destroyed on driver detach. + * + * Return: a managed dma allocation pool with the requested + * characteristics, or %NULL if one can't be created. */ struct dma_pool *dmam_pool_create(const char *name, struct device *dev, size_t size, size_t align, size_t allocation) |