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![Dan Carpenter](/assets/img/avatar_default.png)
There are two issues here:
1) The get_device() needs a matching put_device() on error paths.
2) The "if (!ret)" was supposed to be "if (ret)".
I re-arranged the code a bit to do the allocation before the
get_device().
Fixes: ef7784e41d
("ASoC: soc-card: Add KUnit test case for snd_soc_card_get_kcontrol")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/450dd21a-b24b-48ba-9aa4-c02e4617852f@moroto.mountain
Signed-off-by: Mark Brown <broonie@kernel.org>
187 lines
5.4 KiB
C
187 lines
5.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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// Copyright (C) 2024 Cirrus Logic, Inc. and
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// Cirrus Logic International Semiconductor Ltd.
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#include <kunit/device.h>
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#include <kunit/test.h>
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#include <linux/module.h>
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#include <sound/control.h>
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#include <sound/soc.h>
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#include <sound/soc-card.h>
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struct soc_card_test_priv {
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struct device *card_dev;
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struct snd_soc_card *card;
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};
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static const struct snd_kcontrol_new test_card_controls[] = {
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SOC_SINGLE("Fee", SND_SOC_NOPM, 0, 1, 0),
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SOC_SINGLE("Fi", SND_SOC_NOPM, 1, 1, 0),
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SOC_SINGLE("Fo", SND_SOC_NOPM, 2, 1, 0),
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SOC_SINGLE("Fum", SND_SOC_NOPM, 3, 1, 0),
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SOC_SINGLE("Left Fee", SND_SOC_NOPM, 4, 1, 0),
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SOC_SINGLE("Right Fee", SND_SOC_NOPM, 5, 1, 0),
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SOC_SINGLE("Left Fi", SND_SOC_NOPM, 6, 1, 0),
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SOC_SINGLE("Right Fi", SND_SOC_NOPM, 7, 1, 0),
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SOC_SINGLE("Left Fo", SND_SOC_NOPM, 8, 1, 0),
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SOC_SINGLE("Right Fo", SND_SOC_NOPM, 9, 1, 0),
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SOC_SINGLE("Left Fum", SND_SOC_NOPM, 10, 1, 0),
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SOC_SINGLE("Right Fum", SND_SOC_NOPM, 11, 1, 0),
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};
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static void test_snd_soc_card_get_kcontrol(struct kunit *test)
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{
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struct soc_card_test_priv *priv = test->priv;
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struct snd_soc_card *card = priv->card;
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struct snd_kcontrol *kc;
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struct soc_mixer_control *mc;
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int i, ret;
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ret = snd_soc_add_card_controls(card, test_card_controls, ARRAY_SIZE(test_card_controls));
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KUNIT_ASSERT_EQ(test, ret, 0);
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/* Look up every control */
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for (i = 0; i < ARRAY_SIZE(test_card_controls); ++i) {
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kc = snd_soc_card_get_kcontrol(card, test_card_controls[i].name);
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KUNIT_EXPECT_NOT_ERR_OR_NULL_MSG(test, kc, "Failed to find '%s'\n",
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test_card_controls[i].name);
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if (!kc)
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continue;
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/* Test that it is the correct control */
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mc = (struct soc_mixer_control *)kc->private_value;
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KUNIT_EXPECT_EQ_MSG(test, mc->shift, i, "For '%s'\n", test_card_controls[i].name);
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}
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/* Test some names that should not be found */
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kc = snd_soc_card_get_kcontrol(card, "None");
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KUNIT_EXPECT_NULL(test, kc);
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kc = snd_soc_card_get_kcontrol(card, "Left None");
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KUNIT_EXPECT_NULL(test, kc);
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kc = snd_soc_card_get_kcontrol(card, "Left");
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KUNIT_EXPECT_NULL(test, kc);
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kc = snd_soc_card_get_kcontrol(card, NULL);
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KUNIT_EXPECT_NULL(test, kc);
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}
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static void test_snd_soc_card_get_kcontrol_locked(struct kunit *test)
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{
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struct soc_card_test_priv *priv = test->priv;
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struct snd_soc_card *card = priv->card;
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struct snd_kcontrol *kc, *kcw;
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struct soc_mixer_control *mc;
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int i, ret;
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ret = snd_soc_add_card_controls(card, test_card_controls, ARRAY_SIZE(test_card_controls));
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KUNIT_ASSERT_EQ(test, ret, 0);
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/* Look up every control */
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for (i = 0; i < ARRAY_SIZE(test_card_controls); ++i) {
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down_read(&card->snd_card->controls_rwsem);
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kc = snd_soc_card_get_kcontrol_locked(card, test_card_controls[i].name);
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up_read(&card->snd_card->controls_rwsem);
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KUNIT_EXPECT_NOT_ERR_OR_NULL_MSG(test, kc, "Failed to find '%s'\n",
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test_card_controls[i].name);
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if (!kc)
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continue;
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/* Test that it is the correct control */
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mc = (struct soc_mixer_control *)kc->private_value;
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KUNIT_EXPECT_EQ_MSG(test, mc->shift, i, "For '%s'\n", test_card_controls[i].name);
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down_write(&card->snd_card->controls_rwsem);
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kcw = snd_soc_card_get_kcontrol_locked(card, test_card_controls[i].name);
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up_write(&card->snd_card->controls_rwsem);
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KUNIT_EXPECT_NOT_ERR_OR_NULL_MSG(test, kcw, "Failed to find '%s'\n",
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test_card_controls[i].name);
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KUNIT_EXPECT_PTR_EQ(test, kc, kcw);
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}
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/* Test some names that should not be found */
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down_read(&card->snd_card->controls_rwsem);
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kc = snd_soc_card_get_kcontrol_locked(card, "None");
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up_read(&card->snd_card->controls_rwsem);
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KUNIT_EXPECT_NULL(test, kc);
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down_read(&card->snd_card->controls_rwsem);
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kc = snd_soc_card_get_kcontrol_locked(card, "Left None");
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up_read(&card->snd_card->controls_rwsem);
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KUNIT_EXPECT_NULL(test, kc);
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down_read(&card->snd_card->controls_rwsem);
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kc = snd_soc_card_get_kcontrol_locked(card, "Left");
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up_read(&card->snd_card->controls_rwsem);
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KUNIT_EXPECT_NULL(test, kc);
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down_read(&card->snd_card->controls_rwsem);
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kc = snd_soc_card_get_kcontrol_locked(card, NULL);
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up_read(&card->snd_card->controls_rwsem);
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KUNIT_EXPECT_NULL(test, kc);
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}
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static int soc_card_test_case_init(struct kunit *test)
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{
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struct soc_card_test_priv *priv;
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int ret;
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priv = kunit_kzalloc(test, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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test->priv = priv;
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priv->card = kunit_kzalloc(test, sizeof(*priv->card), GFP_KERNEL);
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if (!priv->card)
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return -ENOMEM;
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priv->card_dev = kunit_device_register(test, "sound-soc-card-test");
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priv->card_dev = get_device(priv->card_dev);
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if (!priv->card_dev)
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return -ENODEV;
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priv->card->name = "soc-card-test";
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priv->card->dev = priv->card_dev;
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priv->card->owner = THIS_MODULE;
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ret = snd_soc_register_card(priv->card);
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if (ret) {
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put_device(priv->card_dev);
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return ret;
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}
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return 0;
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}
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static void soc_card_test_case_exit(struct kunit *test)
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{
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struct soc_card_test_priv *priv = test->priv;
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if (priv->card)
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snd_soc_unregister_card(priv->card);
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if (priv->card_dev)
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put_device(priv->card_dev);
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}
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static struct kunit_case soc_card_test_cases[] = {
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KUNIT_CASE(test_snd_soc_card_get_kcontrol),
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KUNIT_CASE(test_snd_soc_card_get_kcontrol_locked),
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{}
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};
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static struct kunit_suite soc_card_test_suite = {
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.name = "soc-card",
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.test_cases = soc_card_test_cases,
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.init = soc_card_test_case_init,
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.exit = soc_card_test_case_exit,
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};
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kunit_test_suites(&soc_card_test_suite);
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MODULE_DESCRIPTION("ASoC soc-card KUnit test");
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MODULE_LICENSE("GPL");
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