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Thu, 7 Mar 2024 05:40:45 +0300 (MSK) Received: from localhost.localdomain (100.125.24.169) 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, 7 Mar 2024 05:40:45 +0300 From: George Stark To: , , , , , , , , , , , , , , , Subject: [PATCH v5 04/10] leds: aw200xx: use devm API to cleanup module's resources Date: Thu, 7 Mar 2024 05:40:28 +0300 Message-ID: <20240307024034.1548605-5-gnstark@salutedevices.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240307024034.1548605-1-gnstark@salutedevices.com> References: <20240307024034.1548605-1-gnstark@salutedevices.com> MIME-Version: 1.0 X-Originating-IP: [100.125.24.169] X-ClientProxiedBy: p-i-exch-a-m1.sberdevices.ru (172.24.196.116) 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: 183875 [Feb 29 2024] 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}, FromAlignment: s, ApMailHostAddress: 100.125.24.169 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: 2024/02/29 19:21:00 #23899999 X-KSMG-AntiVirus-Status: Clean, skipped X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kernel@salutedevices.com, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-leds@vger.kernel.org, George Stark Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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 --- drivers/leds/leds-aw200xx.c | 32 +++++++++++++++++++++----------- 1 file changed, 21 insertions(+), 11 deletions(-) diff --git a/drivers/leds/leds-aw200xx.c b/drivers/leds/leds-aw200xx.c index f584a7f98fc5..5cba52d07b38 100644 --- a/drivers/leds/leds-aw200xx.c +++ b/drivers/leds/leds-aw200xx.c @@ -530,6 +530,16 @@ static const struct regmap_config aw200xx_regmap_config = { .disable_locking = true, }; +static void aw200xx_chip_reset_action(void *data) +{ + aw200xx_chip_reset(data); +} + +static void aw200xx_disable_action(void *data) +{ + aw200xx_disable(data); +} + static int aw200xx_probe(struct i2c_client *client) { const struct aw200xx_chipdef *cdef; @@ -568,11 +578,17 @@ static int aw200xx_probe(struct i2c_client *client) aw200xx_enable(chip); + ret = devm_add_action(&client->dev, aw200xx_disable_action, chip); + if (ret) + return ret; + ret = aw200xx_chip_check(chip); if (ret) return ret; - mutex_init(&chip->mutex); + ret = devm_mutex_init(&client->dev, &chip->mutex); + if (ret) + return ret; /* Need a lock now since after call aw200xx_probe_fw, sysfs nodes created */ mutex_lock(&chip->mutex); @@ -581,6 +597,10 @@ static int aw200xx_probe(struct i2c_client *client) if (ret) goto out_unlock; + ret = devm_add_action(&client->dev, aw200xx_chip_reset_action, chip); + if (ret) + goto out_unlock; + ret = aw200xx_probe_fw(&client->dev, chip); if (ret) goto out_unlock; @@ -595,15 +615,6 @@ static int aw200xx_probe(struct i2c_client *client) return ret; } -static void aw200xx_remove(struct i2c_client *client) -{ - struct aw200xx *chip = i2c_get_clientdata(client); - - aw200xx_chip_reset(chip); - aw200xx_disable(chip); - mutex_destroy(&chip->mutex); -} - static const struct aw200xx_chipdef aw20036_cdef = { .channels = 36, .display_size_rows_max = 3, @@ -652,7 +663,6 @@ static struct i2c_driver aw200xx_driver = { .of_match_table = aw200xx_match_table, }, .probe = aw200xx_probe, - .remove = aw200xx_remove, .id_table = aw200xx_id, }; module_i2c_driver(aw200xx_driver);