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    Subject[PATCH v3 02/16] fpga: dfl: fme: remove copy_to_user() in ioctl for PR
    Date
    This patch removes copy_to_user() code in partial reconfiguration
    ioctl, as it's useless as user never needs to read the data
    structure after ioctl.

    Signed-off-by: Xu Yilun <yilun.xu@intel.com>
    Signed-off-by: Wu Hao <hao.wu@intel.com>
    Acked-by: Moritz Fischer <mdf@kernel.org>
    Acked-by: Alan Tull <atull@kernel.org>
    ---
    v2: clean up code split from patch 2 in v1 patchset.
    v3: no change.
    ---
    drivers/fpga/dfl-fme-pr.c | 3 ---
    1 file changed, 3 deletions(-)

    diff --git a/drivers/fpga/dfl-fme-pr.c b/drivers/fpga/dfl-fme-pr.c
    index d9ca955..6ec0f09 100644
    --- a/drivers/fpga/dfl-fme-pr.c
    +++ b/drivers/fpga/dfl-fme-pr.c
    @@ -159,9 +159,6 @@ static int fme_pr(struct platform_device *pdev, unsigned long arg)
    mutex_unlock(&pdata->lock);
    free_exit:
    vfree(buf);
    - if (copy_to_user((void __user *)arg, &port_pr, minsz))
    - return -EFAULT;
    -
    return ret;
    }

    --
    1.8.3.1
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