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linux/drivers/of
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Stephen Boyd 6e0391e48c of: Skip kunit tests when arm64+ACPI doesn't populate root node 
A root node is required to apply DT overlays. A root node is usually
present after commit 7b937cc243 ("of: Create of_root if no dtb
provided by firmware"), except for on arm64 systems booted with ACPI
tables. In that case, the root node is intentionally not populated
because it would "allow DT devices to be instantiated atop an ACPI base
system"[1].

Introduce an OF function that skips the kunit test if the root node
isn't populated. Limit the test to when both CONFIG_ARM64 and
CONFIG_ACPI are set, because otherwise the lack of a root node is a bug.
Make the function private and take a kunit test parameter so that it
can't be abused to test for the presence of the root node in non-test
code.

Use this function to skip tests that require the root node. Currently
that's the DT tests and any tests that apply overlays.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Closes: https://lore.kernel.org/r/6cd337fb-38f0-41cb-b942-5844b84433db@roeck-us.net
Link: https://lore.kernel.org/r/Zd4dQpHO7em1ji67@FVFF77S0Q05N.cambridge.arm.com [1]
Fixes: 893ecc6d2d ("of: Add KUnit test to confirm DTB is loaded")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20241009204133.1169931-1-sboyd@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
 		2024-10-10 12:43:01 -05:00
..
unittest-data
…
.kunitconfig of: Add a KUnit test for overlays and test managed APIs 2024-07-29 15:33:12 -07:00
Kconfig of: Add a KUnit test for overlays and test managed APIs 2024-07-29 15:33:12 -07:00
Makefile of: Add a KUnit test for overlays and test managed APIs 2024-07-29 15:33:12 -07:00
address.c of: address: Unify resource bounds overflow checking 2024-09-13 14:00:52 -05:00
base.c
…
cpu.c
…
device.c
…
dynamic.c
…
empty_root.dts
…
fdt.c kbuild: split device tree build rules into scripts/Makefile.dtbs 2024-09-09 23:42:13 +09:00
fdt_address.c
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irq.c of/irq: Use helper to define resources 2024-09-13 14:52:28 -05:00
kexec.c
…
kobj.c
…
kunit_overlay_test.dtso of: Add a KUnit test for overlays and test managed APIs 2024-07-29 15:33:12 -07:00
module.c
…
of_kunit_helpers.c of: Skip kunit tests when arm64+ACPI doesn't populate root node 2024-10-10 12:43:01 -05:00
of_numa.c of, numa: return -EINVAL when no numa-node-id is found 2024-09-03 21:15:32 -07:00
of_private.h of: Skip kunit tests when arm64+ACPI doesn't populate root node 2024-10-10 12:43:01 -05:00
of_reserved_mem.c
…
of_test.c of: Skip kunit tests when arm64+ACPI doesn't populate root node 2024-10-10 12:43:01 -05:00
overlay.c of: overlay: Simplify with scoped for each OF child loop 2024-08-26 10:50:46 -05:00
overlay_test.c of: Skip kunit tests when arm64+ACPI doesn't populate root node 2024-10-10 12:43:01 -05:00
pdt.c
…
platform.c The core clk framework is left largely untouched this time around except for 2024-09-23 15:01:48 -07:00
property.c drivers/of: Improve documentation for match_string 2024-09-13 14:01:34 -05:00
resolver.c of: resolver: Simplify with scoped for each OF child loop 2024-08-26 10:50:46 -05:00
unittest.c Kbuild updates for v6.12 2024-09-24 13:02:06 -07:00