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

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Message-ID: <2bef32d0-2c35-c93d-08a8-71966c1212f2@kernel.org>
Date: Thu, 23 Oct 2025 10:48:19 -0600 (MDT)
From: Paul Walmsley <pjw@...nel.org>
To: Guenter Roeck <linux@...ck-us.net>
cc: Rob Herring <robh@...nel.org>, Saravana Kannan <saravanak@...gle.com>, 
    devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
    linux-riscv@...ts.infradead.org, Han Gao <rabenda.cn@...il.com>, 
    Paul Walmsley <pjw@...nel.org>
Subject: Re: [PATCH] of: Skip devicetree kunit tests when RISCV+ACPI doesn't
 populate root node

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@...il.com>
> Cc: Paul Walmsley <pjw@...nel.org>
> Signed-off-by: Guenter Roeck <linux@...ck-us.net>

Reviewed-by: Paul Walmsley <pjw@...nel.org>  # arch/riscv

thanks Guenter,

- Paul