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    Subject[PATCH v3 16/21] parisc: return error code from .map_sg() ops
    From: Martin Oliveira <martin.oliveira@eideticom.com>

    The .map_sg() op now expects an error code instead of zero on failure.
    Return -EINVAL if the ioc cannot be obtained.

    Signed-off-by: Martin Oliveira <martin.oliveira@eideticom.com>
    Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
    Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
    Cc: Helge Deller <deller@gmx.de>
    ---
    drivers/parisc/ccio-dma.c | 2 +-
    drivers/parisc/sba_iommu.c | 2 +-
    2 files changed, 2 insertions(+), 2 deletions(-)

    diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c
    index b5f9ee81a46c..452e72b7bd01 100644
    --- a/drivers/parisc/ccio-dma.c
    +++ b/drivers/parisc/ccio-dma.c
    @@ -918,7 +918,7 @@ ccio_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
    BUG_ON(!dev);
    ioc = GET_IOC(dev);
    if (!ioc)
    - return 0;
    + return -EINVAL;

    DBG_RUN_SG("%s() START %d entries\n", __func__, nents);

    diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c
    index dce4cdf786cd..e60690d38d67 100644
    --- a/drivers/parisc/sba_iommu.c
    +++ b/drivers/parisc/sba_iommu.c
    @@ -947,7 +947,7 @@ sba_map_sg(struct device *dev, struct scatterlist *sglist, int nents,

    ioc = GET_IOC(dev);
    if (!ioc)
    - return 0;
    + return -EINVAL;

    /* Fast path single entry scatterlists. */
    if (nents == 1) {
    --
    2.20.1
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