Re: [PATCH] mips: econet: fulfill unmet kconfig dependencies

[Jonas Gorski]

Hi,

On Wed, Aug 12, 2026 at 5:27 AM Randy Dunlap <rdunlap@xxxxxxxxxxxxx> wrote:
>
> ECONET selects SERIAL_8250 even though its TTY dependency is not met.
> ECONET selects SERIAL_OF_PLATFORM even though its TTY dependency is not
> met.
> ECONET selects EARLY_PRINTK_8250 even though its EARLY_PRINTK dependency
> is not met.
>
> Fix these kconfig warnings by adding selects for TTY and EARLY_PRINTK.
>
> WARNING: unmet direct dependencies detected for SERIAL_8250
>   Depends on [n]: TTY [=n] && HAS_IOMEM [=y] && !S390
>   Selected by [y]:
>   - ECONET [=y]
>
> WARNING: unmet direct dependencies detected for SERIAL_OF_PLATFORM
>   Depends on [n]: TTY [=n] && HAS_IOMEM [=y] && SERIAL_8250 [=y] && OF [=y]
>   Selected by [y]:
>   - ECONET [=y]
>
> WARNING: unmet direct dependencies detected for EARLY_PRINTK_8250
>   Depends on [n]: EARLY_PRINTK [=n] && USE_GENERIC_EARLY_PRINTK_8250 [=y]
>   Selected by [y]:
>   - ECONET [=y]
>
> Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
> ---
> Cc: Caleb James DeLisle <cjd@xxxxxxxx>
> Cc: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
> Cc: linux-mips@xxxxxxxxxxxxxxx
>
>  arch/mips/Kconfig |    2 ++
>  1 file changed, 2 insertions(+)
>
> --- linux-next-20260810.orig/arch/mips/Kconfig
> +++ linux-next-20260810/arch/mips/Kconfig
> @@ -396,6 +396,7 @@ config ECONET
>         bool "EcoNet MIPS family"
>         select BOOT_RAW
>         select DEBUG_ZBOOT if DEBUG_KERNEL
> +       select EARLY_PRINTK
>         select EARLY_PRINTK_8250

I think the correct solution here is to drop EARLY_PRINTK_8250 instead.

ECONET already selects SYS_HAS_EARLY_PRINTK and
USE_GENERIC_EARLY_PRINTK_8250. EARLY_PRINTK defaults to y if
SYS_HAS_EARLY_PRINTK is y (unless EXPERT is enabled), and
EARLY_PRINTK_8250 defaults to y if both EARLY_PRINTK and
USE_GENERIC_EARLY_PRINTK_8250 are y.

That way users can actually disable EARLY_PRINTK if they wish.

>         select ECONET_EN751221_TIMER
>         select SERIAL_8250
> @@ -407,6 +408,7 @@ config ECONET
>         select SYS_SUPPORTS_32BIT_KERNEL
>         select SYS_SUPPORTS_MIPS16
>         select SYS_SUPPORTS_ZBOOT_UART16550
> +       select TTY

Here I don't know. ECONET seems to be the only platform (treewide)
that selects SERIAL_OF_PLATFORM and SERIAL_8250. Everyone else just
enables these via their defconfigs. No hard feelings one way or the
other, just noticed ECONET is the exception here.

>         select USE_GENERIC_EARLY_PRINTK_8250
>         select USE_OF
>         help
>

Best regards,
Jonas