diff options
| -rw-r--r-- | drivers/leds/led-test.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/drivers/leds/led-test.c b/drivers/leds/led-test.c index 23820189abe3..bc85e4513745 100644 --- a/drivers/leds/led-test.c +++ b/drivers/leds/led-test.c @@ -10,22 +10,51 @@ #include <linux/device.h> #include <linux/leds.h> +#define LED_TEST_POST_REG_BRIGHTNESS 10 + struct led_test_ddata { struct led_classdev cdev; struct device *dev; }; +static enum led_brightness led_test_brightness_get(struct led_classdev *cdev) +{ + return LED_TEST_POST_REG_BRIGHTNESS; +} + static void led_test_class_register(struct kunit *test) { struct led_test_ddata *ddata = test->priv; - struct led_classdev *cdev = &ddata->cdev; + struct led_classdev *cdev_clash, *cdev = &ddata->cdev; struct device *dev = ddata->dev; int ret; + /* Register a LED class device */ cdev->name = "led-test"; + cdev->brightness_get = led_test_brightness_get; + cdev->brightness = 0; ret = devm_led_classdev_register(dev, cdev); KUNIT_ASSERT_EQ(test, ret, 0); + + KUNIT_EXPECT_EQ(test, cdev->max_brightness, LED_FULL); + KUNIT_EXPECT_EQ(test, cdev->brightness, LED_TEST_POST_REG_BRIGHTNESS); + KUNIT_EXPECT_STREQ(test, cdev->dev->kobj.name, "led-test"); + + /* Register again with the same name - expect it to pass with the LED renamed */ + cdev_clash = devm_kmemdup(dev, cdev, sizeof(*cdev), GFP_KERNEL); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cdev_clash); + + ret = devm_led_classdev_register(dev, cdev_clash); + KUNIT_ASSERT_EQ(test, ret, 0); + + KUNIT_EXPECT_STREQ(test, cdev_clash->dev->kobj.name, "led-test_1"); + KUNIT_EXPECT_STREQ(test, cdev_clash->name, "led-test"); + + /* Enable name conflict rejection and register with the same name again - expect failure */ + cdev_clash->flags |= LED_REJECT_NAME_CONFLICT; + ret = devm_led_classdev_register(dev, cdev_clash); + KUNIT_EXPECT_EQ(test, ret, -EEXIST); } static struct kunit_case led_test_cases[] = { |