On Wed, 2018-01-24 at 19:58 -0700, Jason Gunthorpe wrote:
> Returning EOPNOTSUPP is problematic because it can also be
> returned by the method function, and we use it in quite a few
> places in drivers these days.
>
> Instead, dedicate EPROTONOSUPPORT to indicate that the ioctl framework
> is enabled but the requested object and method are not supported by
> the kernel. No other case will return this code, and it lets userspace
> know to fall back to write().
>
> grep says we do not use it today in drivers/infiniband subsystem.
>
> Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Thanks, applied.
--
Doug Ledford <dledford@xxxxxxxxxx>
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