[linux-dvb] Non blocking IO on dvr0 device

David Härdeman david at hardeman.nu
Fri Nov 9 09:20:42 CET 2007

On Fri, November 9, 2007 03:33, Felix Domke wrote:
> Banana Banana wrote:
>> On Nov 9, 2007 12:22 AM, Simon Hargreaves <simon at cellcast.tv> wrote:
>>> I'm using
>>> 2.6.12-gentoo-r6 #1 SMP kernel.
>> Try a more recent kernel?
> No, this is not the correct response to a bug.

Of course it is when the poster's kernel is more than 2 years old (2.6.12
was released on June 17, 2005).

> Or do you remember a bug which was present in that kernel version, and
> fixed later? In that case, why don't you point to the diff?

It would take a superhuman developer to be able to recall every single
patch that went in between 2.6.12 and now and to correctly analyze the
effects of, and interactions between, every single patch.

> This was a (perfectly fine) user question, not a developer request. His
> question was if there is or was a known bug regarding non-blocking IO on
> dvr0. If he wanted to be a kernel developer, he would probably have
> posted a patch fixing (or at least explaining) the issue. But he asked
> if there is a known issue. Not what he could do to maybe workaround that
> problem.

And it was a perfectly straightforward answer, the DVB devs would be
helped if the bug could be reproduced with more recent kernel versions as
it gives a much more solid base from which to start debugging (and if it's
not present in recent kernels, hey, problem solved).

The request for a test with a recent kernel could of course have been
expressed in a less terse manner, but that's something else.

David Härdeman

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