[PATCH] of: Skip devicetree kunit tests when RISCV+ACPI doesn't populate root node

[Paul Walmsley]

On Thu, 23 Oct 2025, Guenter Roeck wrote:

> Starting with commit 69a8b62a7aa1 ("riscv: acpi: avoid errors caused by
> probing DT devices when ACPI is used"), riscv images no longer populate
> devicetree if ACPI is enabled. This causes unit tests to fail which require
> the root node to be set.
> 
>   # Subtest: of_dtb
>   # module: of_test
>   1..2
>   # of_dtb_root_node_found_by_path: EXPECTATION FAILED at drivers/of/of_test.c:21
>   Expected np is not null, but is
>   # of_dtb_root_node_found_by_path: pass:0 fail:1 skip:0 total:1
>   not ok 1 of_dtb_root_node_found_by_path
>   # of_dtb_root_node_populates_of_root: EXPECTATION FAILED at drivers/of/of_test.c:31
>   Expected of_root is not null, but is
>   # of_dtb_root_node_populates_of_root: pass:0 fail:1 skip:0 total:1
>   not ok 2 of_dtb_root_node_populates_of_root
> 
> Skip those tests for RISCV if the root node is not populated.
> 
> Fixes: 69a8b62a7aa1 ("riscv: acpi: avoid errors caused by probing DT devices when ACPI is used")
> Cc: Han Gao <rabenda.cn at gmail.com>
> Cc: Paul Walmsley <pjw at kernel.org>
> Signed-off-by: Guenter Roeck <linux at roeck-us.net>

Reviewed-by: Paul Walmsley <pjw at kernel.org>  # arch/riscv

thanks Guenter,

- Paul