Re: Build regressions/improvements in v4.20-rc1 (sound/pci/hda/patch_ca0132.c)

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Hi Randy,

On Tue, Nov 6, 2018 at 2:06 AM Randy Dunlap <rdunlap@xxxxxxxxxxxxx> wrote:
> On 11/5/18 2:12 PM, Geert Uytterhoeven wrote:
> > On Mon, Nov 5, 2018 at 11:07 PM Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote:
> >> Below is the list of build error/warning regressions/improvements in
> >> v4.20-rc1[1] compared to v4.19[2].
> >>
> >> Summarized:
> >>   - build errors: +3/-0
> >>   - build warnings: +449/-2712
> >>
> >> Happy fixing! ;-)
> >>
> >> Thanks to the linux-next team for providing the build service.
> >>
> >> [1] http://kisskb.ellerman.id.au/kisskb/branch/linus/head/651022382c7f8da46cb4872a545ee1da6d097d2a/ (all 240 configs)
> >> [2] http://kisskb.ellerman.id.au/kisskb/branch/linus/head/84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d/ (all 240 configs)
> >>
> >>
> >> *** ERRORS ***
> >>
> >>   + /kisskb/src/sound/pci/hda/patch_ca0132.c: error: implicit declaration of function 'pci_iomap' [-Werror=implicit-function-declaration]:  => 8799:3
> >
> > sh4-all{mod,yes}config
> >
> > Looks like d9b84a15892c0233 ("ALSA: hda: Fix implicit definition of
> > pci_iomap() on SH")
> > is not sufficient?
>
> Different problem.  This is about "select":
>
> config SND_SOC_ALL_CODECS
>         tristate "Build all ASoC CODEC drivers"
>
> That enables (sets):
>         select SND_SOC_HDAC_HDA
> which selects SND_HDA even though CONFIG_PCI is not enabled.
>
> After SND_HDA is selected (above), the Kconfig symbols in
> sound/pci/hda/Kconfig are available for enabling, so
> SND_HDA_CODEC_CA0132 is enabled but will not build.

Thanks for looking into this!

> One simple solution (but possibly too naive) is:
>
> ---
>  sound/soc/codecs/Kconfig |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> --- lnx-420-rc1.orig/sound/soc/codecs/Kconfig
> +++ lnx-420-rc1/sound/soc/codecs/Kconfig
> @@ -82,7 +82,7 @@ config SND_SOC_ALL_CODECS
>         select SND_SOC_ES7241
>         select SND_SOC_GTM601
>         select SND_SOC_HDAC_HDMI
> -       select SND_SOC_HDAC_HDA
> +       select SND_SOC_HDAC_HDA if PCI
>         select SND_SOC_ICS43432
>         select SND_SOC_INNO_RK3036
>         select SND_SOC_ISABELLE if I2C

I guess that will work. There are already plenty of "select foo if bar" lines.
However, looking at what else can enable SND_HDA, I think it should be

    select SND_SOC_HDAC_HDA if SND_PCI || ARCH_TEGRA

That still leaves the issue that pci_iomap() on SH should be an empty stub if
PCI is not available, like on other architectures.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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