linux-kernel - [PATCH] drm/vc4: allow DRM_VC4_KUNIT

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Date:   Thu,  2 Feb 2023 11:23:32 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     Emma Anholt <emma@...olt.net>, Maxime Ripard <mripard@...nel.org>
Cc:     Arnd Bergmann <arnd@...db.de>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Sam Ravnborg <sam@...nborg.org>,
        Javier Martinez Canillas <javierm@...hat.com>,
        Zheng Bin <zhengbin13@...wei.com>,
        Danilo Krummrich <dakr@...hat.com>,
        Maíra Canal <mcanal@...lia.com>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH] drm/vc4: allow DRM_VC4_KUNIT_TEST to be a loadable module

From: Arnd Bergmann <arnd@...db.de>

In configurations with CONFIG_KUNIT=m, builting the unit test
into the kernel causes a link failure:

arm-linux-gnueabi-ld: drivers/gpu/drm/vc4/tests/vc4_mock.o: in function `__build_mock':
vc4_mock.c:(.text+0x6e): undefined reference to `kunit_do_failed_assertion'
arm-linux-gnueabi-ld: vc4_mock.c:(.text+0x9c): undefined reference to `kunit_do_failed_assertion'
arm-linux-gnueabi-ld: vc4_mock.c:(.text+0x100): undefined reference to `kunit_ptr_not_err_assert_format'
...

Allow this to be a loadable module as well to have Kconfig
sort out the dependencies correctly.

Fixes: f759f5b53f1c ("drm/vc4: tests: Introduce a mocking infrastructure")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/gpu/drm/vc4/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vc4/Kconfig b/drivers/gpu/drm/vc4/Kconfig
index f423941c028d..91dcf8d174d6 100644
--- a/drivers/gpu/drm/vc4/Kconfig
+++ b/drivers/gpu/drm/vc4/Kconfig
@@ -36,7 +36,7 @@ config DRM_VC4_HDMI_CEC
 	  and want to use CEC.
 
 config DRM_VC4_KUNIT_TEST
-	bool "KUnit tests for VC4" if !KUNIT_ALL_TESTS
+	tristate "KUnit tests for VC4" if !KUNIT_ALL_TESTS
 	depends on DRM_VC4 && KUNIT
 	select DRM_KUNIT_TEST_HELPERS
 	default KUNIT_ALL_TESTS
-- 
2.39.0