diff options
Diffstat (limited to 'drivers/input/tests')
| -rw-r--r-- | drivers/input/tests/input_test.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/input/tests/input_test.c b/drivers/input/tests/input_test.c index e105ce71a920..b8c8f04c041b 100644 --- a/drivers/input/tests/input_test.c +++ b/drivers/input/tests/input_test.c @@ -8,6 +8,7 @@ #include <linux/delay.h> #include <linux/input.h> +#include <kunit/device.h> #include <kunit/test.h> #define POLL_INTERVAL 100 @@ -161,11 +162,44 @@ static void input_test_grab(struct kunit *test) input_put_device(input_dev); } +static void input_test_managed_parent_override(struct kunit *test) +{ + struct device *owner, *other_dev; + struct input_dev *input_dev; + + owner = kunit_device_register(test, "input-test-owner"); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, owner); + + other_dev = kunit_device_register(test, "input-test-other"); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, other_dev); + + /* Overriding dev.parent to another device must be rejected */ + input_dev = devm_input_allocate_device(owner); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, input_dev); + input_dev->name = "Managed input device (reparented)"; + input_dev->dev.parent = other_dev; + KUNIT_EXPECT_EQ(test, input_register_device(input_dev), -EINVAL); + + /* Clearing dev.parent to NULL must be rejected */ + input_dev = devm_input_allocate_device(owner); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, input_dev); + input_dev->name = "Managed input device (null parent)"; + input_dev->dev.parent = NULL; + KUNIT_EXPECT_EQ(test, input_register_device(input_dev), -EINVAL); + + /* Preserving original owner as dev.parent succeeds */ + input_dev = devm_input_allocate_device(owner); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, input_dev); + input_dev->name = "Managed input device (valid parent)"; + KUNIT_EXPECT_EQ(test, input_register_device(input_dev), 0); +} + static struct kunit_case input_tests[] = { KUNIT_CASE(input_test_polling), KUNIT_CASE(input_test_timestamp), KUNIT_CASE(input_test_match_device_id), KUNIT_CASE(input_test_grab), + KUNIT_CASE(input_test_managed_parent_override), { /* sentinel */ } }; |