The driver loops through all available regulators (ACT8865_REG_NUM) and accesses pdata->regulators[i].platform_data without checking the actual value of num_regulators in platform data, potentially causing a invalid memory access. Fix this and look up the regulator init_data by id in platform data. Signed-off-by: Beniamino Galvani <b.galvani@xxxxxxxxx> --- drivers/regulator/act8865-regulator.c | 29 +++++++++++++++++++++-------- 1 file changed, 21 insertions(+), 8 deletions(-) diff --git a/drivers/regulator/act8865-regulator.c b/drivers/regulator/act8865-regulator.c index b92d7dd..fe2c038 100644 --- a/drivers/regulator/act8865-regulator.c +++ b/drivers/regulator/act8865-regulator.c @@ -252,6 +252,22 @@ static inline int act8865_pdata_from_dt(struct device *dev, } #endif +static struct regulator_init_data +*act8865_get_init_data(int id, struct act8865_platform_data *pdata) +{ + int i; + + if (!pdata) + return NULL; + + for (i = 0; i < pdata->num_regulators; i++) { + if (pdata->regulators[i].id == id) + return pdata->regulators[i].platform_data; + } + + return NULL; +} + static int act8865_pmic_probe(struct i2c_client *client, const struct i2c_device_id *i2c_id) { @@ -261,7 +277,7 @@ static int act8865_pmic_probe(struct i2c_client *client, struct regulator_config config = { }; struct act8865 *act8865; struct device_node *of_node[ACT8865_REG_NUM]; - int i, id; + int i; int ret = -EINVAL; int error; @@ -299,20 +315,17 @@ static int act8865_pmic_probe(struct i2c_client *client, /* Finally register devices */ for (i = 0; i < ACT8865_REG_NUM; i++) { - - id = pdata->regulators[i].id; + const struct regulator_desc *desc = &act8865_reg[i]; config.dev = dev; - config.init_data = pdata->regulators[i].platform_data; + config.init_data = act8865_get_init_data(desc->id, pdata); config.of_node = of_node[i]; config.driver_data = act8865; config.regmap = act8865->regmap; - rdev = devm_regulator_register(&client->dev, &act8865_reg[i], - &config); + rdev = devm_regulator_register(&client->dev, desc, &config); if (IS_ERR(rdev)) { - dev_err(dev, "failed to register %s\n", - act8865_reg[id].name); + dev_err(dev, "failed to register %s\n", desc->name); return PTR_ERR(rdev); } } -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html