regulator: Fix memory leak in max8998_pmic_probe failure path

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

diff --git a/drivers/regulator/max8998.c b/drivers/regulator/max8998.c
index f57e9c4..41a1495 100644 (file)
--- a/drivers/regulator/max8998.c
+++ b/drivers/regulator/max8998.c
@@ -732,13 +732,15 @@ static __devinit int max8998_pmic_probe(struct platform_device *pdev)
                if (!pdata->buck1_set1) {
                        printk(KERN_ERR "MAX8998 SET1 GPIO defined as 0 !\n");
                        WARN_ON(!pdata->buck1_set1);
-                       return -EIO;
+                       ret = -EIO;
+                       goto err_free_mem;
                }
                /* 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);
-                       return -EIO;
+                       ret = -EIO;
+                       goto err_free_mem;
                }
 
                gpio_request(pdata->buck1_set1, "MAX8998 BUCK1_SET1");
@@ -758,7 +760,7 @@ 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)
-                       return ret;
+                       goto err_free_mem;
 
                /* Set predefined value for BUCK1 register 2 */
                i = 0;
@@ -770,7 +772,7 @@ 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)
-                       return ret;
+                       goto err_free_mem;
 
                /* Set predefined value for BUCK1 register 3 */
                i = 0;
@@ -782,7 +784,7 @@ 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)
-                       return ret;
+                       goto err_free_mem;
 
                /* Set predefined value for BUCK1 register 4 */
                i = 0;
@@ -794,7 +796,7 @@ 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)
-                       return ret;
+                       goto err_free_mem;
 
        }
 
@@ -803,7 +805,8 @@ static __devinit int max8998_pmic_probe(struct platform_device *pdev)
                if (!pdata->buck2_set3) {
                        printk(KERN_ERR "MAX8998 SET3 GPIO defined as 0 !\n");
                        WARN_ON(!pdata->buck2_set3);
-                       return -EIO;
+                       ret = -EIO;
+                       goto err_free_mem;
                }
                gpio_request(pdata->buck2_set3, "MAX8998 BUCK2_SET3");
                gpio_direction_output(pdata->buck2_set3,
@@ -818,7 +821,7 @@ 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)
-                       return ret;
+                       goto err_free_mem;
 
                /* BUCK2 register 2 */
                i = 0;
@@ -830,7 +833,7 @@ 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)
-                       return ret;
+                       goto err_free_mem;
        }
 
        for (i = 0; i < pdata->num_regulators; i++) {
@@ -860,6 +863,7 @@ err:
                if (rdev[i])
                        regulator_unregister(rdev[i]);
 
+err_free_mem:
        kfree(max8998->rdev);
        kfree(max8998);