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-rw-r--r--drivers/base/test/.kunitconfig2
-rw-r--r--drivers/base/test/Kconfig4
-rw-r--r--drivers/base/test/Makefile3
-rw-r--r--drivers/base/test/platform-device-test.c224
-rw-r--r--drivers/base/test/root-device-test.c112
-rw-r--r--drivers/base/test/test_async_driver_probe.c2
6 files changed, 346 insertions, 1 deletions
diff --git a/drivers/base/test/.kunitconfig b/drivers/base/test/.kunitconfig
new file mode 100644
index 000000000000..473923f0998b
--- /dev/null
+++ b/drivers/base/test/.kunitconfig
@@ -0,0 +1,2 @@
+CONFIG_KUNIT=y
+CONFIG_DM_KUNIT_TEST=y
diff --git a/drivers/base/test/Kconfig b/drivers/base/test/Kconfig
index 610a1ba7a467..9d42051f8f8e 100644
--- a/drivers/base/test/Kconfig
+++ b/drivers/base/test/Kconfig
@@ -9,6 +9,10 @@ config TEST_ASYNC_DRIVER_PROBE
If unsure say N.
+config DM_KUNIT_TEST
+ tristate "KUnit Tests for the device model" if !KUNIT_ALL_TESTS
+ depends on KUNIT
+
config DRIVER_PE_KUNIT_TEST
bool "KUnit Tests for property entry API" if !KUNIT_ALL_TESTS
depends on KUNIT=y
diff --git a/drivers/base/test/Makefile b/drivers/base/test/Makefile
index 7f76fee6f989..e321dfc7e922 100644
--- a/drivers/base/test/Makefile
+++ b/drivers/base/test/Makefile
@@ -1,5 +1,8 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_TEST_ASYNC_DRIVER_PROBE) += test_async_driver_probe.o
+obj-$(CONFIG_DM_KUNIT_TEST) += root-device-test.o
+obj-$(CONFIG_DM_KUNIT_TEST) += platform-device-test.o
+
obj-$(CONFIG_DRIVER_PE_KUNIT_TEST) += property-entry-test.o
CFLAGS_property-entry-test.o += $(DISABLE_STRUCTLEAK_PLUGIN)
diff --git a/drivers/base/test/platform-device-test.c b/drivers/base/test/platform-device-test.c
new file mode 100644
index 000000000000..ea05b8785743
--- /dev/null
+++ b/drivers/base/test/platform-device-test.c
@@ -0,0 +1,224 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <kunit/resource.h>
+
+#include <linux/device.h>
+#include <linux/platform_device.h>
+
+#define DEVICE_NAME "test"
+
+struct test_priv {
+ bool probe_done;
+ bool release_done;
+ wait_queue_head_t probe_wq;
+ wait_queue_head_t release_wq;
+ struct device *dev;
+};
+
+static int platform_device_devm_init(struct kunit *test)
+{
+ struct test_priv *priv;
+
+ priv = kunit_kzalloc(test, sizeof(*priv), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv);
+ init_waitqueue_head(&priv->probe_wq);
+ init_waitqueue_head(&priv->release_wq);
+
+ test->priv = priv;
+
+ return 0;
+}
+
+static void devm_device_action(void *ptr)
+{
+ struct test_priv *priv = ptr;
+
+ priv->release_done = true;
+ wake_up_interruptible(&priv->release_wq);
+}
+
+static void devm_put_device_action(void *ptr)
+{
+ struct test_priv *priv = ptr;
+
+ put_device(priv->dev);
+ priv->release_done = true;
+ wake_up_interruptible(&priv->release_wq);
+}
+
+#define RELEASE_TIMEOUT_MS 100
+
+/*
+ * Tests that a platform bus, non-probed device will run its
+ * device-managed actions when unregistered.
+ */
+static void platform_device_devm_register_unregister_test(struct kunit *test)
+{
+ struct platform_device *pdev;
+ struct test_priv *priv = test->priv;
+ int ret;
+
+ pdev = platform_device_alloc(DEVICE_NAME, PLATFORM_DEVID_NONE);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, pdev);
+
+ ret = platform_device_add(pdev);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ priv->dev = &pdev->dev;
+
+ ret = devm_add_action_or_reset(priv->dev, devm_device_action, priv);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ platform_device_unregister(pdev);
+
+ ret = wait_event_interruptible_timeout(priv->release_wq, priv->release_done,
+ msecs_to_jiffies(RELEASE_TIMEOUT_MS));
+ KUNIT_EXPECT_GT(test, ret, 0);
+}
+
+/*
+ * Tests that a platform bus, non-probed device will run its
+ * device-managed actions when unregistered, even if someone still holds
+ * a reference to it.
+ */
+static void platform_device_devm_register_get_unregister_with_devm_test(struct kunit *test)
+{
+ struct platform_device *pdev;
+ struct test_priv *priv = test->priv;
+ int ret;
+
+ pdev = platform_device_alloc(DEVICE_NAME, PLATFORM_DEVID_NONE);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, pdev);
+
+ ret = platform_device_add(pdev);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ priv->dev = &pdev->dev;
+
+ get_device(priv->dev);
+
+ ret = devm_add_action_or_reset(priv->dev, devm_put_device_action, priv);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ platform_device_unregister(pdev);
+
+ ret = wait_event_interruptible_timeout(priv->release_wq, priv->release_done,
+ msecs_to_jiffies(RELEASE_TIMEOUT_MS));
+ KUNIT_EXPECT_GT(test, ret, 0);
+}
+
+static int fake_probe(struct platform_device *pdev)
+{
+ struct test_priv *priv = platform_get_drvdata(pdev);
+
+ priv->probe_done = true;
+ wake_up_interruptible(&priv->probe_wq);
+
+ return 0;
+}
+
+static struct platform_driver fake_driver = {
+ .probe = fake_probe,
+ .driver = {
+ .name = DEVICE_NAME,
+ },
+};
+
+/*
+ * Tests that a platform bus, probed device will run its device-managed
+ * actions when unregistered.
+ */
+static void probed_platform_device_devm_register_unregister_test(struct kunit *test)
+{
+ struct platform_device *pdev;
+ struct test_priv *priv = test->priv;
+ int ret;
+
+ ret = platform_driver_register(&fake_driver);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ pdev = platform_device_alloc(DEVICE_NAME, PLATFORM_DEVID_NONE);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, pdev);
+
+ priv->dev = &pdev->dev;
+ platform_set_drvdata(pdev, priv);
+
+ ret = platform_device_add(pdev);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ ret = wait_event_interruptible_timeout(priv->probe_wq, priv->probe_done,
+ msecs_to_jiffies(RELEASE_TIMEOUT_MS));
+ KUNIT_ASSERT_GT(test, ret, 0);
+
+ ret = devm_add_action_or_reset(priv->dev, devm_device_action, priv);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ platform_device_unregister(pdev);
+
+ ret = wait_event_interruptible_timeout(priv->release_wq, priv->release_done,
+ msecs_to_jiffies(RELEASE_TIMEOUT_MS));
+ KUNIT_EXPECT_GT(test, ret, 0);
+
+ platform_driver_unregister(&fake_driver);
+}
+
+/*
+ * Tests that a platform bus, probed device will run its device-managed
+ * actions when unregistered, even if someone still holds a reference to
+ * it.
+ */
+static void probed_platform_device_devm_register_get_unregister_with_devm_test(struct kunit *test)
+{
+ struct platform_device *pdev;
+ struct test_priv *priv = test->priv;
+ int ret;
+
+ ret = platform_driver_register(&fake_driver);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ pdev = platform_device_alloc(DEVICE_NAME, PLATFORM_DEVID_NONE);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, pdev);
+
+ priv->dev = &pdev->dev;
+ platform_set_drvdata(pdev, priv);
+
+ ret = platform_device_add(pdev);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ ret = wait_event_interruptible_timeout(priv->probe_wq, priv->probe_done,
+ msecs_to_jiffies(RELEASE_TIMEOUT_MS));
+ KUNIT_ASSERT_GT(test, ret, 0);
+
+ get_device(priv->dev);
+
+ ret = devm_add_action_or_reset(priv->dev, devm_put_device_action, priv);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ platform_device_unregister(pdev);
+
+ ret = wait_event_interruptible_timeout(priv->release_wq, priv->release_done,
+ msecs_to_jiffies(RELEASE_TIMEOUT_MS));
+ KUNIT_EXPECT_GT(test, ret, 0);
+
+ platform_driver_unregister(&fake_driver);
+}
+
+static struct kunit_case platform_device_devm_tests[] = {
+ KUNIT_CASE(platform_device_devm_register_unregister_test),
+ KUNIT_CASE(platform_device_devm_register_get_unregister_with_devm_test),
+ KUNIT_CASE(probed_platform_device_devm_register_unregister_test),
+ KUNIT_CASE(probed_platform_device_devm_register_get_unregister_with_devm_test),
+ {}
+};
+
+static struct kunit_suite platform_device_devm_test_suite = {
+ .name = "platform-device-devm",
+ .init = platform_device_devm_init,
+ .test_cases = platform_device_devm_tests,
+};
+
+kunit_test_suite(platform_device_devm_test_suite);
+
+MODULE_DESCRIPTION("Test module for platform devices");
+MODULE_AUTHOR("Maxime Ripard <mripard@kernel.org>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/base/test/root-device-test.c b/drivers/base/test/root-device-test.c
new file mode 100644
index 000000000000..9aea23c9123e
--- /dev/null
+++ b/drivers/base/test/root-device-test.c
@@ -0,0 +1,112 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright 2023 Maxime Ripard <mripard@kernel.org>
+
+#include <kunit/resource.h>
+
+#include <linux/device.h>
+
+#define DEVICE_NAME "test"
+
+struct test_priv {
+ bool probe_done;
+ bool release_done;
+ wait_queue_head_t release_wq;
+ struct device *dev;
+};
+
+static int root_device_devm_init(struct kunit *test)
+{
+ struct test_priv *priv;
+
+ priv = kunit_kzalloc(test, sizeof(*priv), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv);
+ init_waitqueue_head(&priv->release_wq);
+
+ test->priv = priv;
+
+ return 0;
+}
+
+static void devm_device_action(void *ptr)
+{
+ struct test_priv *priv = ptr;
+
+ priv->release_done = true;
+ wake_up_interruptible(&priv->release_wq);
+}
+
+#define RELEASE_TIMEOUT_MS 100
+
+/*
+ * Tests that a bus-less, non-probed device will run its device-managed
+ * actions when unregistered.
+ */
+static void root_device_devm_register_unregister_test(struct kunit *test)
+{
+ struct test_priv *priv = test->priv;
+ int ret;
+
+ priv->dev = root_device_register(DEVICE_NAME);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->dev);
+
+ ret = devm_add_action_or_reset(priv->dev, devm_device_action, priv);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ root_device_unregister(priv->dev);
+
+ ret = wait_event_interruptible_timeout(priv->release_wq, priv->release_done,
+ msecs_to_jiffies(RELEASE_TIMEOUT_MS));
+ KUNIT_EXPECT_GT(test, ret, 0);
+}
+
+static void devm_put_device_action(void *ptr)
+{
+ struct test_priv *priv = ptr;
+
+ put_device(priv->dev);
+ priv->release_done = true;
+ wake_up_interruptible(&priv->release_wq);
+}
+
+/*
+ * Tests that a bus-less, non-probed device will run its device-managed
+ * actions when unregistered, even if someone still holds a reference to
+ * it.
+ */
+static void root_device_devm_register_get_unregister_with_devm_test(struct kunit *test)
+{
+ struct test_priv *priv = test->priv;
+ int ret;
+
+ priv->dev = root_device_register(DEVICE_NAME);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, priv->dev);
+
+ get_device(priv->dev);
+
+ ret = devm_add_action_or_reset(priv->dev, devm_put_device_action, priv);
+ KUNIT_ASSERT_EQ(test, ret, 0);
+
+ root_device_unregister(priv->dev);
+
+ ret = wait_event_interruptible_timeout(priv->release_wq, priv->release_done,
+ msecs_to_jiffies(RELEASE_TIMEOUT_MS));
+ KUNIT_EXPECT_GT(test, ret, 0);
+}
+
+static struct kunit_case root_device_devm_tests[] = {
+ KUNIT_CASE(root_device_devm_register_unregister_test),
+ KUNIT_CASE(root_device_devm_register_get_unregister_with_devm_test),
+ {}
+};
+
+static struct kunit_suite root_device_devm_test_suite = {
+ .name = "root-device-devm",
+ .init = root_device_devm_init,
+ .test_cases = root_device_devm_tests,
+};
+
+kunit_test_suite(root_device_devm_test_suite);
+
+MODULE_DESCRIPTION("Test module for root devices");
+MODULE_AUTHOR("Maxime Ripard <mripard@kernel.org>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/base/test/test_async_driver_probe.c b/drivers/base/test/test_async_driver_probe.c
index 929410d0dd6f..3465800baa6c 100644
--- a/drivers/base/test/test_async_driver_probe.c
+++ b/drivers/base/test/test_async_driver_probe.c
@@ -84,7 +84,7 @@ test_platform_device_register_node(char *name, int id, int nid)
pdev = platform_device_alloc(name, id);
if (!pdev)
- return NULL;
+ return ERR_PTR(-ENOMEM);
if (nid != NUMA_NO_NODE)
set_dev_node(&pdev->dev, nid);
generated by cgit v1.2.3 (git 2.39.0) at 2024-08-01 12:35:53 +0300