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Mon, 19 Oct 2026 03:18:04 -0700 (PDT) From: Svyatoslav Ryhel To: Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Lee Jones , Svyatoslav Ryhel Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, mfd@lists.linux.dev Subject: [PATCH v3 3/4] mfd: max8907: Switch to resource-managed versions of helpers Date: Mon, 19 Oct 2026 13:17:49 +0300 Message-ID: <20261019101750.125439-4-clamor95@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20261019101750.125439-1-clamor95@gmail.com> References: <20261019101750.125439-1-clamor95@gmail.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Switch to resource-managed versions of regmap_add_irq_chip() and i2c_new_dummy_device(). This involves probe refactoring in order to remove jumps and allows to drop the .remove callback. Signed-off-by: Svyatoslav Ryhel --- drivers/mfd/max8907.c | 128 +++++++++++++++--------------------------- 1 file changed, 44 insertions(+), 84 deletions(-) diff --git a/drivers/mfd/max8907.c b/drivers/mfd/max8907.c index 363ac80c0593b..fab44be7ced57 100644 --- a/drivers/mfd/max8907.c +++ b/drivers/mfd/max8907.c @@ -182,73 +182,61 @@ static void max8907_power_off(void) static int max8907_i2c_probe(struct i2c_client *i2c) { + struct device *dev = &i2c->dev; struct max8907 *max8907; int ret; - bool pm_off = of_property_read_bool(i2c->dev.of_node, + bool pm_off = of_property_read_bool(dev->of_node, "maxim,system-power-controller"); - max8907 = devm_kzalloc(&i2c->dev, sizeof(struct max8907), GFP_KERNEL); - if (!max8907) { - ret = -ENOMEM; - goto err_alloc_drvdata; - } + max8907 = devm_kzalloc(dev, sizeof(*max8907), GFP_KERNEL); + if (!max8907) + return -ENOMEM; - max8907->dev = &i2c->dev; + max8907->dev = dev; max8907->i2c_gen = i2c; i2c_set_clientdata(i2c, max8907); + max8907->regmap_gen = devm_regmap_init_i2c(i2c, - &max8907_regmap_gen_config); - if (IS_ERR(max8907->regmap_gen)) { - ret = PTR_ERR(max8907->regmap_gen); - dev_err(&i2c->dev, "gen regmap init failed: %d\n", ret); - goto err_regmap_gen; - } + &max8907_regmap_gen_config); + if (IS_ERR(max8907->regmap_gen)) + return dev_err_probe(dev, PTR_ERR(max8907->regmap_gen), + "GEN regmap init failed\n"); - max8907->i2c_rtc = i2c_new_dummy_device(i2c->adapter, MAX8907_RTC_I2C_ADDR); - if (IS_ERR(max8907->i2c_rtc)) { - ret = PTR_ERR(max8907->i2c_rtc); - goto err_dummy_rtc; - } - i2c_set_clientdata(max8907->i2c_rtc, max8907); - max8907->regmap_rtc = devm_regmap_init_i2c(max8907->i2c_rtc, - &max8907_regmap_rtc_config); - if (IS_ERR(max8907->regmap_rtc)) { - ret = PTR_ERR(max8907->regmap_rtc); - dev_err(&i2c->dev, "rtc regmap init failed: %d\n", ret); - goto err_regmap_rtc; - } + max8907->i2c_rtc = devm_i2c_new_dummy_device(dev, i2c->adapter, MAX8907_RTC_I2C_ADDR); + if (IS_ERR(max8907->i2c_rtc)) + return PTR_ERR(max8907->i2c_rtc); - ret = regmap_add_irq_chip(max8907->regmap_gen, max8907->i2c_gen->irq, - IRQF_ONESHOT | IRQF_SHARED, - -1, &max8907_chg_irq_chip, - &max8907->irqc_chg); - if (ret != 0) { - dev_err(&i2c->dev, "failed to add chg irq chip: %d\n", ret); - goto err_irqc_chg; - } - ret = regmap_add_irq_chip(max8907->regmap_gen, max8907->i2c_gen->irq, - IRQF_ONESHOT | IRQF_SHARED, -1, - &max8907_on_off_irq_chip, - &max8907->irqc_on_off); - if (ret != 0) { - dev_err(&i2c->dev, "failed to add on off irq chip: %d\n", ret); - goto err_irqc_on_off; - } - ret = regmap_add_irq_chip(max8907->regmap_rtc, max8907->i2c_gen->irq, - IRQF_ONESHOT | IRQF_SHARED, -1, - &max8907_rtc_irq_chip, - &max8907->irqc_rtc); - if (ret != 0) { - dev_err(&i2c->dev, "failed to add rtc irq chip: %d\n", ret); - goto err_irqc_rtc; - } + i2c_set_clientdata(max8907->i2c_rtc, max8907); - ret = mfd_add_devices(max8907->dev, -1, max8907_cells, - ARRAY_SIZE(max8907_cells), NULL, 0, NULL); - if (ret != 0) { - dev_err(&i2c->dev, "failed to add MFD devices %d\n", ret); - goto err_add_devices; - } + max8907->regmap_rtc = devm_regmap_init_i2c(max8907->i2c_rtc, + &max8907_regmap_rtc_config); + if (IS_ERR(max8907->regmap_rtc)) + return dev_err_probe(dev, PTR_ERR(max8907->regmap_rtc), + "RTC regmap init failed\n"); + + ret = devm_regmap_add_irq_chip(dev, max8907->regmap_gen, max8907->i2c_gen->irq, + IRQF_ONESHOT | IRQF_SHARED, -1, &max8907_chg_irq_chip, + &max8907->irqc_chg); + if (ret) + return dev_err_probe(dev, ret, "Failed to add chg irq chip\n"); + + ret = devm_regmap_add_irq_chip(dev, max8907->regmap_gen, max8907->i2c_gen->irq, + IRQF_ONESHOT | IRQF_SHARED, -1, &max8907_on_off_irq_chip, + &max8907->irqc_on_off); + if (ret) + return dev_err_probe(dev, ret, "Failed to add on off irq chip\n"); + + ret = devm_regmap_add_irq_chip(dev, max8907->regmap_rtc, max8907->i2c_gen->irq, + IRQF_ONESHOT | IRQF_SHARED, -1, &max8907_rtc_irq_chip, + &max8907->irqc_rtc); + if (ret) + return dev_err_probe(dev, ret, "Failed to add rtc irq chip\n"); + + ret = devm_mfd_add_devices(dev, -1, max8907_cells, ARRAY_SIZE(max8907_cells), + NULL, 0, NULL); + if (ret) + return dev_err_probe(dev, ret, "Failed to add MFD devices\n"); if (pm_off && !pm_power_off) { max8907_pm_off = max8907; @@ -256,33 +244,6 @@ static int max8907_i2c_probe(struct i2c_client *i2c) } return 0; - -err_add_devices: - regmap_del_irq_chip(max8907->i2c_gen->irq, max8907->irqc_rtc); -err_irqc_rtc: - regmap_del_irq_chip(max8907->i2c_gen->irq, max8907->irqc_on_off); -err_irqc_on_off: - regmap_del_irq_chip(max8907->i2c_gen->irq, max8907->irqc_chg); -err_irqc_chg: -err_regmap_rtc: - i2c_unregister_device(max8907->i2c_rtc); -err_dummy_rtc: -err_regmap_gen: -err_alloc_drvdata: - return ret; -} - -static void max8907_i2c_remove(struct i2c_client *i2c) -{ - struct max8907 *max8907 = i2c_get_clientdata(i2c); - - mfd_remove_devices(max8907->dev); - - regmap_del_irq_chip(max8907->i2c_gen->irq, max8907->irqc_rtc); - regmap_del_irq_chip(max8907->i2c_gen->irq, max8907->irqc_on_off); - regmap_del_irq_chip(max8907->i2c_gen->irq, max8907->irqc_chg); - - i2c_unregister_device(max8907->i2c_rtc); } #ifdef CONFIG_OF @@ -305,7 +266,6 @@ static struct i2c_driver max8907_i2c_driver = { .of_match_table = of_match_ptr(max8907_of_match), }, .probe = max8907_i2c_probe, - .remove = max8907_i2c_remove, .id_table = max8907_i2c_id, }; -- 2.53.0