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    Subject[PATCH 2/4] dma-pool: Get rid of dma_in_atomic_pool()
    Date
    The function is only used once and can be simplified to a one-liner.

    Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
    ---
    kernel/dma/pool.c | 11 +----------
    1 file changed, 1 insertion(+), 10 deletions(-)

    diff --git a/kernel/dma/pool.c b/kernel/dma/pool.c
    index 8cfa01243ed2..7363640fc91c 100644
    --- a/kernel/dma/pool.c
    +++ b/kernel/dma/pool.c
    @@ -217,15 +217,6 @@ static inline struct gen_pool *dev_to_pool(struct device *dev)
    return atomic_pool_kernel;
    }

    -static bool dma_in_atomic_pool(struct device *dev, void *start, size_t size)
    -{
    - struct gen_pool *pool = dev_to_pool(dev);
    -
    - if (unlikely(!pool))
    - return false;
    - return gen_pool_has_addr(pool, (unsigned long)start, size);
    -}
    -
    void *dma_alloc_from_pool(struct device *dev, size_t size,
    struct page **ret_page, gfp_t flags)
    {
    @@ -256,7 +247,7 @@ bool dma_free_from_pool(struct device *dev, void *start, size_t size)
    {
    struct gen_pool *pool = dev_to_pool(dev);

    - if (!dma_in_atomic_pool(dev, start, size))
    + if (!pool || !gen_pool_has_addr(pool, (unsigned long)start, size))
    return false;
    gen_pool_free(pool, (unsigned long)start, size);
    return true;
    --
    2.27.0
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