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Thu, 11 Apr 2024 19:10:39 +0300 From: George Stark To: , , , , , , , , , , , , , , CC: , , , George Stark , Nikita Travkin Subject: [PATCH v8 2/8] leds: aw2013: use devm API to cleanup module's resources Date: Thu, 11 Apr 2024 19:10:26 +0300 Message-ID: <20240411161032.609544-3-gnstark@salutedevices.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240411161032.609544-1-gnstark@salutedevices.com> References: <20240411161032.609544-1-gnstark@salutedevices.com> Precedence: bulk X-Mailing-List: linux-leds@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: p-i-exch-sc-m02.sberdevices.ru (172.16.192.103) To p-i-exch-sc-m02.sberdevices.ru (172.16.192.103) X-KSMG-Rule-ID: 10 X-KSMG-Message-Action: clean X-KSMG-AntiSpam-Lua-Profiles: 184677 [Apr 11 2024] X-KSMG-AntiSpam-Version: 6.1.0.4 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: 16 0.3.16 6e64c33514fcbd07e515710c86ba61de7f56194e, {Tracking_from_domain_doesnt_match_to}, 100.64.160.123:7.1.2; salutedevices.com:7.1.1; smtp.sberdevices.ru:5.0.1,7.1.1; 127.0.0.199:7.1.2; d41d8cd98f00b204e9800998ecf8427e.com:7.1.1, 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: 2024/04/11 15:00:00 #24747318 X-KSMG-AntiVirus-Status: Clean, skipped 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 Reviewed-by: Andy Shevchenko Tested-by: Nikita Travkin --- drivers/leds/leds-aw2013.c | 25 +++++++++++++------------ 1 file changed, 13 insertions(+), 12 deletions(-) diff --git a/drivers/leds/leds-aw2013.c b/drivers/leds/leds-aw2013.c index 17235a5e576a..6475eadcb0df 100644 --- a/drivers/leds/leds-aw2013.c +++ b/drivers/leds/leds-aw2013.c @@ -320,6 +320,11 @@ 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, @@ -336,7 +341,10 @@ 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; @@ -384,6 +392,10 @@ 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; @@ -406,19 +418,9 @@ 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 */ }, @@ -432,7 +434,6 @@ static struct i2c_driver aw2013_driver = { .of_match_table = aw2013_match_table, }, .probe = aw2013_probe, - .remove = aw2013_remove, }; module_i2c_driver(aw2013_driver);