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kunit: provide kunit_platform_device_unregister()

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Tests may want to unregister a platform device as part of the test case
logic. Using the regular platform_device_register() with kunit
assertions may result in a platform device leak or otherwise requires
cumbersome error handling. Provide a function that unregisters a
kunit-managed platform device and drops the release action from the
test's list.

Reviewed-by: David Gow <david@davidgow.net>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Link: https://patch.msgid.link/20260522-gpiolib-kunit-v3-2-b15fe6987430@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
This commit is contained in:
Bartosz Golaszewski
2026-05-22 15:42:17 +02:00
parent 4c237ab773
commit 136569e6bc
2 changed files with 35 additions and 0 deletions
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2
include/kunit/platform_device.h
View File

@@ -14,6 +14,8 @@ int kunit_platform_device_add(struct kunit *test, struct platform_device *pdev);
struct platform_device *
kunit_platform_device_register_full(struct kunit *test,
const struct platform_device_info *pdevinfo);
void kunit_platform_device_unregister(struct kunit *test,
struct platform_device *pdev);
int kunit_platform_device_prepare_wait_for_probe(struct kunit *test,
struct platform_device *pdev,

33
lib/kunit/platform.c
View File

@@ -161,6 +161,39 @@ kunit_platform_device_register_full(struct kunit *test,
}
EXPORT_SYMBOL_GPL(kunit_platform_device_register_full);
static bool
kunit_platform_device_add_match(struct kunit *test, struct kunit_resource *res,
void *match_data)
{
struct platform_device *pdev = match_data;
return res->data == pdev && res->free == kunit_platform_device_add_exit;
}
/**
* kunit_platform_device_unregister() - Unregister a KUnit-managed platform device
* @test: test context
* @pdev: platform device to unregister
*
* Unregister a test-managed platform device and cancel its release action.
*/
void kunit_platform_device_unregister(struct kunit *test,
struct platform_device *pdev)
{
struct kunit_resource *res;
res = kunit_find_resource(test, kunit_platform_device_add_match, pdev);
if (res) {
res->free = NULL;
kunit_put_resource(res);
} else {
kunit_remove_action(test, platform_device_unregister_wrapper, pdev);
}
platform_device_unregister(pdev);
}
EXPORT_SYMBOL_GPL(kunit_platform_device_unregister);
struct kunit_platform_device_probe_nb {
struct completion *x;
struct device *dev;