Re: [PATCH v3 02/38] ata: add HAS_IOPORT dependencies

[Geert Uytterhoeven]

Hi Niklas,

On Tue, Mar 14, 2023 at 1:12 PM Niklas Schnelle <schnelle@xxxxxxxxxxxxx> wrote:
> In a future patch HAS_IOPORT=n will result in inb()/outb() and friends
> not being declared. We thus need to add HAS_IOPORT as dependency for
> those drivers using them.
>
> Co-developed-by: Arnd Bergmann <arnd@xxxxxxxxxx>
> Signed-off-by: Niklas Schnelle <schnelle@xxxxxxxxxxxxx>

Thanks for your patch!

> --- a/drivers/ata/Kconfig
> +++ b/drivers/ata/Kconfig
> @@ -342,6 +342,7 @@ endif # HAS_DMA
>
>  config ATA_SFF
>         bool "ATA SFF support (for legacy IDE and PATA)"
> +       depends on HAS_IOPORT
>         default y
>         help
>           This option adds support for ATA controllers with SFF

ATA_SFF is a dependency for lots of (S)ATA drivers.
(at least) The following don't use I/O port access:

    CONFIG_SATA_RCAR (arm/arm64)
    CONFIG_PATA_FALCON (m68k/atari and m68k/q40)
    CONFIG_PATA_GAYLE (m68k/amiga)
    CONFIG_PATA_BUDDHA (m68k/amiga)

(at least) The following can use either MMIO or I/O port accesses:

    CONFIG_PATA_PLATFORM (m68k/mac)

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