Commit 711aebcf authored by Sebastian Reichel's avatar Sebastian Reichel Committed by Sebastian Reichel
Browse files

power: supply: ds2781: fix race-condition in bin attribute registration 



This is a follow-up patch to the previous one, which fixed a
race-condition during registration of the attribute group.
This fixes the same issue for the binary attributes by adding
them to the properly registered group. As a side effect the
code is further cleaned up.

Signed-off-by: default avatarSebastian Reichel <sebastian.reichel@collabora.com>
parent 88635b6d

drivers/power/supply/ds2781_battery.c

+19 −31
Original line number Diff line number Diff line
@@ -660,7 +660,7 @@ static ssize_t ds2781_write_param_eeprom_bin(struct file *filp, 
	return count;

}



static const struct bin_attribute ds2781_param_eeprom_bin_attr = {

static struct bin_attribute ds2781_param_eeprom_bin_attr = {

	.attr = {

		.name = "param_eeprom",

		.mode = S_IRUGO | S_IWUSR,
@@ -706,7 +706,7 @@ static ssize_t ds2781_write_user_eeprom_bin(struct file *filp, 
	return count;

}



static const struct bin_attribute ds2781_user_eeprom_bin_attr = {

static struct bin_attribute ds2781_user_eeprom_bin_attr = {

	.attr = {

		.name = "user_eeprom",

		.mode = S_IRUGO | S_IWUSR,
@@ -725,7 +725,6 @@ static DEVICE_ATTR(rsgain_setting, S_IRUGO | S_IWUSR, ds2781_get_rsgain_setting, 
static DEVICE_ATTR(pio_pin, S_IRUGO | S_IWUSR, ds2781_get_pio_pin,

	ds2781_set_pio_pin);





static struct attribute *ds2781_sysfs_attrs[] = {

	&dev_attr_pmod_enabled.attr,

	&dev_attr_sense_resistor_value.attr,
@@ -734,12 +733,26 @@ static struct attribute *ds2781_sysfs_attrs[] = { 
	NULL

};



ATTRIBUTE_GROUPS(ds2781_sysfs);

static struct bin_attribute *ds2781_sysfs_bin_attrs[] = {

	&ds2781_param_eeprom_bin_attr,

	&ds2781_user_eeprom_bin_attr,

	NULL,

};



static const struct attribute_group ds2781_sysfs_group = {

	.attrs = ds2781_sysfs_attrs,

	.bin_attrs = ds2781_sysfs_bin_attrs,



};



static const struct attribute_group *ds2781_sysfs_groups[] = {

	&ds2781_sysfs_group,

	NULL,

};



static int ds2781_battery_probe(struct platform_device *pdev)

{

	struct power_supply_config psy_cfg = {};

	int ret = 0;

	struct ds2781_device_info *dev_info;



	dev_info = devm_kzalloc(&pdev->dev, sizeof(*dev_info), GFP_KERNEL);
@@ -763,35 +776,10 @@ static int ds2781_battery_probe(struct platform_device *pdev) 
						&psy_cfg);

	if (IS_ERR(dev_info->bat)) {

		dev_err(dev_info->dev, "failed to register battery\n");

		ret = PTR_ERR(dev_info->bat);

		goto fail;

	}



	ret = sysfs_create_bin_file(&dev_info->bat->dev.kobj,

					&ds2781_param_eeprom_bin_attr);

	if (ret) {

		dev_err(dev_info->dev,

				"failed to create param eeprom bin file");

		goto fail_unregister;

	}



	ret = sysfs_create_bin_file(&dev_info->bat->dev.kobj,

					&ds2781_user_eeprom_bin_attr);

	if (ret) {

		dev_err(dev_info->dev,

				"failed to create user eeprom bin file");

		goto fail_remove_bin_file;

		return PTR_ERR(dev_info->bat);

	}



	return 0;



fail_remove_bin_file:

	sysfs_remove_bin_file(&dev_info->bat->dev.kobj,

				&ds2781_param_eeprom_bin_attr);

fail_unregister:

	power_supply_unregister(dev_info->bat);

fail:

	return ret;

}



static int ds2781_battery_remove(struct platform_device *pdev)

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