Re: testing/selftests/alsa/mixer-test: 10 failures on Dell XPS 13 9360

[Mark Brown <broonie@xxxxxxxxxx>]

On Fri, May 31, 2024 at 05:17:43PM +0200, Takashi Iwai wrote:
> On Fri, 31 May 2024 07:50:33 +0200,

> >     not ok 5 write_invalid.0.40
> >     not ok 201 write_invalid.0.12
> >     not ok 208 write_invalid.0.11
> >     not ok 264 write_invalid.0.3
> >     not ok 271 write_invalid.0.2
> >     not ok 278 write_invalid.0.1
> >     not ok 285 write_invalid.0.0

> Through a quick look, those are no real "failures".  It'd be more
> preferable if the driver returns an error for invalid values, but
> currently it's up to drivers how to deal with them, and some accept as
> is but with correction of the values internally.  They are shown as
> "skips" in the summary above you showed, after all.

I would say these are all bugs, they show the driver not correcting the
value and allowing users to read back out of range values that were
written.  Even if the driver is accepting out of range values I'd expect
it to transform them somehow when storing, the program will accept a
mismatched read when testing this case but it will complain if the read
value is not valid according to the control's info.

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