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    Subject[PATCH 4.9 042/199] dma-mapping: fix return type of dma_set_max_seg_size()
    Date
    From: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>

    [ Upstream commit c9d76d0655c06b8c1f944e46c4fd9e9cf4b331c0 ]

    The function dma_set_max_seg_size() can return either 0 on success or
    -EIO on error. Change its return type from unsigned int to int to
    capture this.

    Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
    Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
    Signed-off-by: Christoph Hellwig <hch@lst.de>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    include/linux/dma-mapping.h | 3 +--
    1 file changed, 1 insertion(+), 2 deletions(-)

    diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
    index 704caae69c427..97f817f4eb784 100644
    --- a/include/linux/dma-mapping.h
    +++ b/include/linux/dma-mapping.h
    @@ -618,8 +618,7 @@ static inline unsigned int dma_get_max_seg_size(struct device *dev)
    return SZ_64K;
    }

    -static inline unsigned int dma_set_max_seg_size(struct device *dev,
    - unsigned int size)
    +static inline int dma_set_max_seg_size(struct device *dev, unsigned int size)
    {
    if (dev->dma_parms) {
    dev->dma_parms->max_segment_size = size;
    --
    2.20.1


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