Re: [PATCH 04/10] comedi: get rid of compat_alloc_user_space() mess in COMEDI_RANGEINFO compat

[Ian Abbott]

On 29/05/2020 01:35, Al Viro wrote:
> From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
>
> Just take copy_from_user() out of do_rangeing_ioctl() into the caller and
> have compat_rangeinfo() build a native version and pass it to do_rangeinfo_ioctl()
> directly.
>
> Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
> ---
>   drivers/staging/comedi/comedi_fops.c     | 43 ++++++++++++++------------------
>   drivers/staging/comedi/comedi_internal.h |  2 +-
>   drivers/staging/comedi/range.c           | 17 ++++++-------
>   3 files changed, 27 insertions(+), 35 deletions(-)

Signed-off-by: Ian Abbott <abbotti@xxxxxxxxx>

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