From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751710Ab2DSBro (ORCPT ); Wed, 18 Apr 2012 21:47:44 -0400 Received: from mail-iy0-f174.google.com ([209.85.210.174]:60570 "EHLO mail-iy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750943Ab2DSBrn (ORCPT ); Wed, 18 Apr 2012 21:47:43 -0400 Message-ID: <1334800057.2707.6.camel@phoenix> Subject: [PATCH 2/2] regulator: max8998: Convert ot use devm_kzalloc From: Axel Lin To: linux-kernel@vger.kernel.org Cc: Kyungmin Park , Liam Girdwood , Mark Brown Date: Thu, 19 Apr 2012 09:47:37 +0800 In-Reply-To: <1334799853.2707.3.camel@phoenix> References: <1334799853.2707.3.camel@phoenix> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.2- Content-Transfer-Encoding: 7bit Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Also simplify the error handling to start unwind from the place regulator_register fails. No need to check rdev[i] is NULL or not before calling regulator_unregister. regulator_unregister is safe if rdev is NULL, Signed-off-by: Axel Lin --- drivers/regulator/max8998.c | 45 ++++++++++++++++-------------------------- 1 files changed, 17 insertions(+), 28 deletions(-) diff --git a/drivers/regulator/max8998.c b/drivers/regulator/max8998.c index 4ca22f9..04c8961 100644 --- a/drivers/regulator/max8998.c +++ b/drivers/regulator/max8998.c @@ -719,16 +719,15 @@ static __devinit int max8998_pmic_probe(struct platform_device *pdev) return -ENODEV; } - max8998 = kzalloc(sizeof(struct max8998_data), GFP_KERNEL); + max8998 = devm_kzalloc(&pdev->dev, sizeof(struct max8998_data), + GFP_KERNEL); if (!max8998) return -ENOMEM; size = sizeof(struct regulator_dev *) * pdata->num_regulators; - max8998->rdev = kzalloc(size, GFP_KERNEL); - if (!max8998->rdev) { - kfree(max8998); + max8998->rdev = devm_kzalloc(&pdev->dev, size, GFP_KERNEL); + if (!max8998->rdev) return -ENOMEM; - } rdev = max8998->rdev; max8998->dev = &pdev->dev; @@ -752,14 +751,14 @@ static __devinit int max8998_pmic_probe(struct platform_device *pdev) printk(KERN_ERR "MAX8998 SET1 GPIO defined as 0 !\n"); WARN_ON(!pdata->buck1_set1); ret = -EIO; - goto err_free_mem; + goto err_out; } /* Check if SET2 is not equal to 0 */ if (!pdata->buck1_set2) { printk(KERN_ERR "MAX8998 SET2 GPIO defined as 0 !\n"); WARN_ON(!pdata->buck1_set2); ret = -EIO; - goto err_free_mem; + goto err_out; } gpio_request(pdata->buck1_set1, "MAX8998 BUCK1_SET1"); @@ -779,7 +778,7 @@ static __devinit int max8998_pmic_probe(struct platform_device *pdev) max8998->buck1_vol[0] = i; ret = max8998_write_reg(i2c, MAX8998_REG_BUCK1_VOLTAGE1, i); if (ret) - goto err_free_mem; + goto err_out; /* Set predefined value for BUCK1 register 2 */ i = 0; @@ -791,7 +790,7 @@ static __devinit int max8998_pmic_probe(struct platform_device *pdev) max8998->buck1_vol[1] = i; ret = max8998_write_reg(i2c, MAX8998_REG_BUCK1_VOLTAGE2, i); if (ret) - goto err_free_mem; + goto err_out; /* Set predefined value for BUCK1 register 3 */ i = 0; @@ -803,7 +802,7 @@ static __devinit int max8998_pmic_probe(struct platform_device *pdev) max8998->buck1_vol[2] = i; ret = max8998_write_reg(i2c, MAX8998_REG_BUCK1_VOLTAGE3, i); if (ret) - goto err_free_mem; + goto err_out; /* Set predefined value for BUCK1 register 4 */ i = 0; @@ -815,7 +814,7 @@ static __devinit int max8998_pmic_probe(struct platform_device *pdev) max8998->buck1_vol[3] = i; ret = max8998_write_reg(i2c, MAX8998_REG_BUCK1_VOLTAGE4, i); if (ret) - goto err_free_mem; + goto err_out; } @@ -825,7 +824,7 @@ static __devinit int max8998_pmic_probe(struct platform_device *pdev) printk(KERN_ERR "MAX8998 SET3 GPIO defined as 0 !\n"); WARN_ON(!pdata->buck2_set3); ret = -EIO; - goto err_free_mem; + goto err_out; } gpio_request(pdata->buck2_set3, "MAX8998 BUCK2_SET3"); gpio_direction_output(pdata->buck2_set3, @@ -840,7 +839,7 @@ static __devinit int max8998_pmic_probe(struct platform_device *pdev) max8998->buck2_vol[0] = i; ret = max8998_write_reg(i2c, MAX8998_REG_BUCK2_VOLTAGE1, i); if (ret) - goto err_free_mem; + goto err_out; /* BUCK2 register 2 */ i = 0; @@ -851,7 +850,7 @@ static __devinit int max8998_pmic_probe(struct platform_device *pdev) max8998->buck2_vol[1] = i; ret = max8998_write_reg(i2c, MAX8998_REG_BUCK2_VOLTAGE2, i); if (ret) - goto err_free_mem; + goto err_out; } for (i = 0; i < pdata->num_regulators; i++) { @@ -881,14 +880,9 @@ static __devinit int max8998_pmic_probe(struct platform_device *pdev) return 0; err: - for (i = 0; i < max8998->num_regulators; i++) - if (rdev[i]) - regulator_unregister(rdev[i]); - -err_free_mem: - kfree(max8998->rdev); - kfree(max8998); - + while (--i >= 0) + regulator_unregister(rdev[i]); +err_out: return ret; } @@ -899,12 +893,7 @@ static int __devexit max8998_pmic_remove(struct platform_device *pdev) int i; for (i = 0; i < max8998->num_regulators; i++) - if (rdev[i]) - regulator_unregister(rdev[i]); - - kfree(max8998->rdev); - kfree(max8998); - + regulator_unregister(rdev[i]); return 0; } -- 1.7.5.4