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Thu, 14 Dec 2023 20:36:24 +0300 (MSK) Received: from localhost.localdomain (100.64.160.123) by p-i-exch-sc-m01.sberdevices.ru (172.16.192.107) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Thu, 14 Dec 2023 20:36:24 +0300 From: George Stark To: , , , , , , , , , , , , , , CC: , , , , George Stark , Nikita Travkin Subject: [PATCH v4 03/10] leds: aw2013: use devm API to cleanup module's resources Date: Thu, 14 Dec 2023 20:36:07 +0300 Message-ID: <20231214173614.2820929-4-gnstark@salutedevices.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231214173614.2820929-1-gnstark@salutedevices.com> References: <20231214173614.2820929-1-gnstark@salutedevices.com> MIME-Version: 1.0 X-Originating-IP: [100.64.160.123] X-ClientProxiedBy: p-i-exch-sc-m02.sberdevices.ru (172.16.192.103) To p-i-exch-sc-m01.sberdevices.ru (172.16.192.107) X-KSMG-Rule-ID: 10 X-KSMG-Message-Action: clean X-KSMG-AntiSpam-Lua-Profiles: 182125 [Dec 14 2023] X-KSMG-AntiSpam-Version: 6.1.0.3 X-KSMG-AntiSpam-Envelope-From: gnstark@salutedevices.com X-KSMG-AntiSpam-Rate: 0 X-KSMG-AntiSpam-Status: not_detected X-KSMG-AntiSpam-Method: none X-KSMG-AntiSpam-Auth: dkim=none X-KSMG-AntiSpam-Info: LuaCore: 7 0.3.7 6d6bf5bd8eea7373134f756a2fd73e9456bb7d1a, {Tracking_from_domain_doesnt_match_to}, smtp.sberdevices.ru:5.0.1,7.1.1;d41d8cd98f00b204e9800998ecf8427e.com:7.1.1;127.0.0.199:7.1.2;salutedevices.com:7.1.1;100.64.160.123:7.1.2, FromAlignment: s, ApMailHostAddress: 100.64.160.123 X-MS-Exchange-Organization-SCL: -1 X-KSMG-AntiSpam-Interceptor-Info: scan successful X-KSMG-AntiPhishing: Clean X-KSMG-LinksScanning: Clean X-KSMG-AntiVirus: Kaspersky Secure Mail Gateway, version 2.0.1.6960, bases: 2023/12/14 10:50:00 #22693095 X-KSMG-AntiVirus-Status: Clean, skipped X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on pete.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (pete.vger.email [0.0.0.0]); Thu, 14 Dec 2023 09:36:51 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1785279772701215831 X-GMAIL-MSGID: 1785279772701215831 In this driver LEDs are registered using devm_led_classdev_register() so they are automatically unregistered after module's remove() is done. led_classdev_unregister() calls module's led_set_brightness() to turn off the LEDs and that callback uses resources which were destroyed already in module's remove() so use devm API instead of remove(). Signed-off-by: George Stark Tested-by: Nikita Travkin --- drivers/leds/leds-aw2013.c | 26 ++++++++++++++------------ 1 file changed, 14 insertions(+), 12 deletions(-) diff --git a/drivers/leds/leds-aw2013.c b/drivers/leds/leds-aw2013.c index c2bc0782c0cd..863aeb02f278 100644 --- a/drivers/leds/leds-aw2013.c +++ b/drivers/leds/leds-aw2013.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0+ // Driver for Awinic AW2013 3-channel LED driver +#include #include #include #include @@ -318,6 +319,11 @@ static int aw2013_probe_dt(struct aw2013 *chip) return 0; } +static void aw2013_chip_disable_action(void *data) +{ + aw2013_chip_disable(data); +} + static const struct regmap_config aw2013_regmap_config = { .reg_bits = 8, .val_bits = 8, @@ -334,7 +340,10 @@ static int aw2013_probe(struct i2c_client *client) if (!chip) return -ENOMEM; - mutex_init(&chip->mutex); + ret = devm_mutex_init(&client->dev, &chip->mutex); + if (ret) + return ret; + mutex_lock(&chip->mutex); chip->client = client; @@ -378,6 +387,10 @@ static int aw2013_probe(struct i2c_client *client) goto error_reg; } + ret = devm_add_action(&client->dev, aw2013_chip_disable_action, chip); + if (ret) + goto error_reg; + ret = aw2013_probe_dt(chip); if (ret < 0) goto error_reg; @@ -398,19 +411,9 @@ static int aw2013_probe(struct i2c_client *client) error: mutex_unlock(&chip->mutex); - mutex_destroy(&chip->mutex); return ret; } -static void aw2013_remove(struct i2c_client *client) -{ - struct aw2013 *chip = i2c_get_clientdata(client); - - aw2013_chip_disable(chip); - - mutex_destroy(&chip->mutex); -} - static const struct of_device_id aw2013_match_table[] = { { .compatible = "awinic,aw2013", }, { /* sentinel */ }, @@ -424,7 +427,6 @@ static struct i2c_driver aw2013_driver = { .of_match_table = of_match_ptr(aw2013_match_table), }, .probe = aw2013_probe, - .remove = aw2013_remove, }; module_i2c_driver(aw2013_driver);