Re: [PATCH] UBI: block: Use ENOSYS as return value when CONFIG_UBIBLOCK=n

[Artem Bityutskiy <dedekind1@gmail.com>]

On Tue, 2014-03-04 at 09:14 -0300, Ezequiel Garcia wrote:
> On Tue, Mar 04, 2014 at 01:49:51PM +0200, Artem Bityutskiy wrote:
> > On Tue, 2014-03-04 at 07:57 -0300, Ezequiel Garcia wrote:
> > > In order to have a way of distinguishing an invalid ioctl from a
> > > not supported (but otherwise valid) ioctl, this commit changes the
> > > return value of the ioctl stubs from ENOTTY to ENOSYS.
> > 
> > Sounds logical, no objections, except it is curious if this is something
> > you invented or this is a general rule in the Linux kernel? If it is,
> > may be you can point to some discussions, or give some example or other
> > source of this knowledge? I just want to be educated a bit. Thanks!
> > 
> 
> Yes, I think it's a pretty extended kernel practice to return -ENOSYS when
> a function is not built or either not implemented.

Pushed this one and the previous 3 ones. I think what is left is ioctl
names and the user-space tool.

Thanks!

-- 
Best Regards,
Artem Bityutskiy