Michael H. Schimek wrote:
> Gerd Knorr wrote:
> >
> > A TUNER bit is still present, IMHO a _simple_ check to see whenever some
> > tuner is present or not is useful.
>
> Just for the records, when is a simple check advantageous?
Take some app which scans for TV stations. If a device has no tuner it
can just abort. Having the driver set this flag is one or two lines of
C code. Having the application check that by walking all inputs and
look for tuners needs much more code.
> > > * READ/WRITE/STREAMING - Actually I thought this was never in question
> > > (unlike optional ioctls just returning -EINVAL). I always liked to
> > > enable the appropriate i/o routines without much ado. What's the
> > > alternative?
> >
> > read/write/streaming not being optional (but mandatory like select
> > support)?
>
> I don't see a good reason why r/w and/or streaming must be mandatory.
> Is there?
Applications can depend on r/w streaming support being available?
We can also make this optional, but I'd create a single flag for
read/write then, another for streaming and maybe a third for
async I/O ...
Gerd
--
You can't please everybody. And usually if you _try_ to please
everybody, the end result is one big mess.
-- Linus Torvalds, 2002-04-20
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