Re: [PATCH linux-next] power: supply: convert sprintf with sysfs_emit()

From: Sebastian Reichel
Date: Mon Jan 02 2023 - 13:05:03 EST

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Hi,

On Tue, Dec 06, 2022 at 11:16:08AM +0800, ye.xingchen@xxxxxxxxxx wrote:
> From: ye xingchen <ye.xingchen@xxxxxxxxxx>
>
> Follow the advice of the Documentation/filesystems/sysfs.rst and show()
> should only use sysfs_emit() or sysfs_emit_at() when formatting the
> value to be returned to user space.
>
> Signed-off-by: ye xingchen <ye.xingchen@xxxxxxxxxx>
> ---

You changed all sprintf instances, incl. those not related to sysfs.
That's obviously not ok. I dropped those changes and queued this
patch with a fixed up commit message. Please be more careful next
time.

Thanks,

-- Sebastian

> drivers/power/supply/ab8500_fg.c | 4 +--
> drivers/power/supply/bq2415x_charger.c | 44 +++++++++++------------
> drivers/power/supply/charger-manager.c | 6 ++--
> drivers/power/supply/cros_usbpd-charger.c | 4 +--
> drivers/power/supply/ds2780_battery.c | 8 ++---
> drivers/power/supply/ds2781_battery.c | 8 ++---
> drivers/power/supply/isp1704_charger.c | 2 +-
> drivers/power/supply/ltc4162-l-charger.c | 12 +++----
> drivers/power/supply/mp2629_charger.c | 2 +-
> drivers/power/supply/olpc_battery.c | 4 +--
> drivers/power/supply/pcf50633-charger.c | 6 ++--
> drivers/power/supply/pmu_battery.c | 2 +-
> drivers/power/supply/power_supply_sysfs.c | 12 +++----
> drivers/power/supply/sbs-battery.c | 2 +-
> drivers/power/supply/test_power.c | 12 +++----
> drivers/power/supply/wm8350_power.c | 2 +-
> 16 files changed, 65 insertions(+), 65 deletions(-)
>
> diff --git a/drivers/power/supply/ab8500_fg.c b/drivers/power/supply/ab8500_fg.c
> index d989eadaa933..41a7bff9ac37 100644
> --- a/drivers/power/supply/ab8500_fg.c
> +++ b/drivers/power/supply/ab8500_fg.c
> @@ -2453,7 +2453,7 @@ struct ab8500_fg_sysfs_entry {
>
> static ssize_t charge_full_show(struct ab8500_fg *di, char *buf)
> {
> - return sprintf(buf, "%d\n", di->bat_cap.max_mah);
> + return sysfs_emit(buf, "%d\n", di->bat_cap.max_mah);
> }
>
> static ssize_t charge_full_store(struct ab8500_fg *di, const char *buf,
> @@ -2472,7 +2472,7 @@ static ssize_t charge_full_store(struct ab8500_fg *di, const char *buf,
>
> static ssize_t charge_now_show(struct ab8500_fg *di, char *buf)
> {
> - return sprintf(buf, "%d\n", di->bat_cap.prev_mah);
> + return sysfs_emit(buf, "%d\n", di->bat_cap.prev_mah);
> }
>
> static ssize_t charge_now_store(struct ab8500_fg *di, const char *buf,
> diff --git a/drivers/power/supply/bq2415x_charger.c b/drivers/power/supply/bq2415x_charger.c
> index d2cb7431dced..0e8bbc2e3e07 100644
> --- a/drivers/power/supply/bq2415x_charger.c
> +++ b/drivers/power/supply/bq2415x_charger.c
> @@ -1059,7 +1059,7 @@ static ssize_t bq2415x_sysfs_show_status(struct device *dev,
> ret = bq2415x_exec_command(bq, command);
> if (ret < 0)
> return ret;
> - return sprintf(buf, "%d\n", ret);
> + return sysfs_emit(buf, "%d\n", ret);
> }
>
> /*
> @@ -1098,11 +1098,11 @@ static ssize_t bq2415x_sysfs_show_timer(struct device *dev,
> struct bq2415x_device *bq = power_supply_get_drvdata(psy);
>
> if (bq->timer_error)
> - return sprintf(buf, "%s\n", bq->timer_error);
> + return sysfs_emit(buf, "%s\n", bq->timer_error);
>
> if (bq->autotimer)
> - return sprintf(buf, "auto\n");
> - return sprintf(buf, "off\n");
> + return sysfs_emit(buf, "auto\n");
> + return sysfs_emit(buf, "off\n");
> }
>
> /*
> @@ -1175,30 +1175,30 @@ static ssize_t bq2415x_sysfs_show_mode(struct device *dev,
> ssize_t ret = 0;
>
> if (bq->automode > 0)
> - ret += sprintf(buf+ret, "auto (");
> + ret += sysfs_emit_at(buf, ret, "auto (");
>
> switch (bq->mode) {
> case BQ2415X_MODE_OFF:
> - ret += sprintf(buf+ret, "off");
> + ret += sysfs_emit_at(buf, ret, "off");
> break;
> case BQ2415X_MODE_NONE:
> - ret += sprintf(buf+ret, "none");
> + ret += sysfs_emit_at(buf, ret, "none");
> break;
> case BQ2415X_MODE_HOST_CHARGER:
> - ret += sprintf(buf+ret, "host");
> + ret += sysfs_emit_at(buf, ret, "host");
> break;
> case BQ2415X_MODE_DEDICATED_CHARGER:
> - ret += sprintf(buf+ret, "dedicated");
> + ret += sysfs_emit_at(buf, ret, "dedicated");
> break;
> case BQ2415X_MODE_BOOST:
> - ret += sprintf(buf+ret, "boost");
> + ret += sysfs_emit_at(buf, ret, "boost");
> break;
> }
>
> if (bq->automode > 0)
> - ret += sprintf(buf+ret, ")");
> + ret += sysfs_emit_at(buf, ret, ")");
>
> - ret += sprintf(buf+ret, "\n");
> + ret += sysfs_emit_at(buf, ret, "\n");
> return ret;
> }
>
> @@ -1215,15 +1215,15 @@ static ssize_t bq2415x_sysfs_show_reported_mode(struct device *dev,
>
> switch (bq->reported_mode) {
> case BQ2415X_MODE_OFF:
> - return sprintf(buf, "off\n");
> + return sysfs_emit(buf, "off\n");
> case BQ2415X_MODE_NONE:
> - return sprintf(buf, "none\n");
> + return sysfs_emit(buf, "none\n");
> case BQ2415X_MODE_HOST_CHARGER:
> - return sprintf(buf, "host\n");
> + return sysfs_emit(buf, "host\n");
> case BQ2415X_MODE_DEDICATED_CHARGER:
> - return sprintf(buf, "dedicated\n");
> + return sysfs_emit(buf, "dedicated\n");
> case BQ2415X_MODE_BOOST:
> - return sprintf(buf, "boost\n");
> + return sysfs_emit(buf, "boost\n");
> }
>
> return -EINVAL;
> @@ -1261,8 +1261,8 @@ static ssize_t bq2415x_sysfs_print_reg(struct bq2415x_device *bq,
> int ret = bq2415x_i2c_read(bq, reg);
>
> if (ret < 0)
> - return sprintf(buf, "%#.2x=error %d\n", reg, ret);
> - return sprintf(buf, "%#.2x=%#.2x\n", reg, ret);
> + return sysfs_emit(buf, "%#.2x=error %d\n", reg, ret);
> + return sysfs_emit(buf, "%#.2x=%#.2x\n", reg, ret);
> }
>
> /* show all raw values of chip register, format per line: 'register=value' */
> @@ -1338,7 +1338,7 @@ static ssize_t bq2415x_sysfs_show_limit(struct device *dev,
>
> if (ret < 0)
> return ret;
> - return sprintf(buf, "%d\n", ret);
> + return sysfs_emit(buf, "%d\n", ret);
> }
>
> /* set *_enable entries */
> @@ -1401,7 +1401,7 @@ static ssize_t bq2415x_sysfs_show_enable(struct device *dev,
> ret = bq2415x_exec_command(bq, command);
> if (ret < 0)
> return ret;
> - return sprintf(buf, "%d\n", ret);
> + return sysfs_emit(buf, "%d\n", ret);
> }
>
> static DEVICE_ATTR(current_limit, S_IWUSR | S_IRUGO,
> @@ -1498,7 +1498,7 @@ static int bq2415x_power_supply_init(struct bq2415x_device *bq)
> if (ret < 0)
> strcpy(revstr, "unknown");
> else
> - sprintf(revstr, "1.%d", ret);
> + sysfs_emit(revstr, "1.%d", ret);
>
> bq->model = kasprintf(GFP_KERNEL,
> "chip %s, revision %s, vender code %.3d",
> diff --git a/drivers/power/supply/charger-manager.c b/drivers/power/supply/charger-manager.c
> index 92db79400a6a..c9e8450c646f 100644
> --- a/drivers/power/supply/charger-manager.c
> +++ b/drivers/power/supply/charger-manager.c
> @@ -1075,7 +1075,7 @@ static ssize_t charger_name_show(struct device *dev,
> struct charger_regulator *charger
> = container_of(attr, struct charger_regulator, attr_name);
>
> - return sprintf(buf, "%s\n", charger->regulator_name);
> + return sysfs_emit(buf, "%s\n", charger->regulator_name);
> }
>
> static ssize_t charger_state_show(struct device *dev,
> @@ -1088,7 +1088,7 @@ static ssize_t charger_state_show(struct device *dev,
> if (!charger->externally_control)
> state = regulator_is_enabled(charger->consumer);
>
> - return sprintf(buf, "%s\n", state ? "enabled" : "disabled");
> + return sysfs_emit(buf, "%s\n", state ? "enabled" : "disabled");
> }
>
> static ssize_t charger_externally_control_show(struct device *dev,
> @@ -1097,7 +1097,7 @@ static ssize_t charger_externally_control_show(struct device *dev,
> struct charger_regulator *charger = container_of(attr,
> struct charger_regulator, attr_externally_control);
>
> - return sprintf(buf, "%d\n", charger->externally_control);
> + return sysfs_emit(buf, "%d\n", charger->externally_control);
> }
>
> static ssize_t charger_externally_control_store(struct device *dev,
> diff --git a/drivers/power/supply/cros_usbpd-charger.c b/drivers/power/supply/cros_usbpd-charger.c
> index cadb6a0c2cc7..effd5dc4eb79 100644
> --- a/drivers/power/supply/cros_usbpd-charger.c
> +++ b/drivers/power/supply/cros_usbpd-charger.c
> @@ -630,14 +630,14 @@ static int cros_usbpd_charger_probe(struct platform_device *pd)
> psy_cfg.drv_data = port;
>
> if (cros_usbpd_charger_port_is_dedicated(port)) {
> - sprintf(port->name, CHARGER_DEDICATED_DIR_NAME);
> + sysfs_emit(port->name, CHARGER_DEDICATED_DIR_NAME);
> psy_desc->type = POWER_SUPPLY_TYPE_MAINS;
> psy_desc->properties =
> cros_usbpd_dedicated_charger_props;
> psy_desc->num_properties =
> ARRAY_SIZE(cros_usbpd_dedicated_charger_props);
> } else {
> - sprintf(port->name, CHARGER_USBPD_DIR_NAME, i);
> + sysfs_emit(port->name, CHARGER_USBPD_DIR_NAME, i);
> psy_desc->type = POWER_SUPPLY_TYPE_USB;
> psy_desc->properties = cros_usbpd_charger_props;
> psy_desc->num_properties =
> diff --git a/drivers/power/supply/ds2780_battery.c b/drivers/power/supply/ds2780_battery.c
> index 2b8c90d84325..1e7f297f6cb1 100644
> --- a/drivers/power/supply/ds2780_battery.c
> +++ b/drivers/power/supply/ds2780_battery.c
> @@ -454,7 +454,7 @@ static ssize_t ds2780_get_pmod_enabled(struct device *dev,
> if (ret < 0)
> return ret;
>
> - return sprintf(buf, "%d\n",
> + return sysfs_emit(buf, "%d\n",
> !!(control_reg & DS2780_CONTROL_REG_PMOD));
> }
>
> @@ -507,7 +507,7 @@ static ssize_t ds2780_get_sense_resistor_value(struct device *dev,
> if (ret < 0)
> return ret;
>
> - ret = sprintf(buf, "%d\n", sense_resistor);
> + ret = sysfs_emit(buf, "%d\n", sense_resistor);
> return ret;
> }
>
> @@ -545,7 +545,7 @@ static ssize_t ds2780_get_rsgain_setting(struct device *dev,
> if (ret < 0)
> return ret;
>
> - return sprintf(buf, "%d\n", rsgain);
> + return sysfs_emit(buf, "%d\n", rsgain);
> }
>
> static ssize_t ds2780_set_rsgain_setting(struct device *dev,
> @@ -588,7 +588,7 @@ static ssize_t ds2780_get_pio_pin(struct device *dev,
> if (ret < 0)
> return ret;
>
> - ret = sprintf(buf, "%d\n", sfr & DS2780_SFR_REG_PIOSC);
> + ret = sysfs_emit(buf, "%d\n", sfr & DS2780_SFR_REG_PIOSC);
> return ret;
> }
>
> diff --git a/drivers/power/supply/ds2781_battery.c b/drivers/power/supply/ds2781_battery.c
> index 05b859bf2dc0..c4f8ccc687f9 100644
> --- a/drivers/power/supply/ds2781_battery.c
> +++ b/drivers/power/supply/ds2781_battery.c
> @@ -456,7 +456,7 @@ static ssize_t ds2781_get_pmod_enabled(struct device *dev,
> if (ret < 0)
> return ret;
>
> - return sprintf(buf, "%d\n",
> + return sysfs_emit(buf, "%d\n",
> !!(control_reg & DS2781_CONTROL_PMOD));
> }
>
> @@ -509,7 +509,7 @@ static ssize_t ds2781_get_sense_resistor_value(struct device *dev,
> if (ret < 0)
> return ret;
>
> - ret = sprintf(buf, "%d\n", sense_resistor);
> + ret = sysfs_emit(buf, "%d\n", sense_resistor);
> return ret;
> }
>
> @@ -547,7 +547,7 @@ static ssize_t ds2781_get_rsgain_setting(struct device *dev,
> if (ret < 0)
> return ret;
>
> - return sprintf(buf, "%d\n", rsgain);
> + return sysfs_emit(buf, "%d\n", rsgain);
> }
>
> static ssize_t ds2781_set_rsgain_setting(struct device *dev,
> @@ -590,7 +590,7 @@ static ssize_t ds2781_get_pio_pin(struct device *dev,
> if (ret < 0)
> return ret;
>
> - ret = sprintf(buf, "%d\n", sfr & DS2781_SFR_PIOSC);
> + ret = sysfs_emit(buf, "%d\n", sfr & DS2781_SFR_PIOSC);
> return ret;
> }
>
> diff --git a/drivers/power/supply/isp1704_charger.c b/drivers/power/supply/isp1704_charger.c
> index b6efc454e4f0..7e82b0c17672 100644
> --- a/drivers/power/supply/isp1704_charger.c
> +++ b/drivers/power/supply/isp1704_charger.c
> @@ -367,7 +367,7 @@ static inline int isp1704_test_ulpi(struct isp1704_charger *isp)
>
> for (i = 0; i < ARRAY_SIZE(isp170x_id); i++) {
> if (product == isp170x_id[i]) {
> - sprintf(isp->model, "isp%x", product);
> + sysfs_emit(isp->model, "isp%x", product);
> return product;
> }
> }
> diff --git a/drivers/power/supply/ltc4162-l-charger.c b/drivers/power/supply/ltc4162-l-charger.c
> index db2bb5233570..0e95c65369b8 100644
> --- a/drivers/power/supply/ltc4162-l-charger.c
> +++ b/drivers/power/supply/ltc4162-l-charger.c
> @@ -525,7 +525,7 @@ static ssize_t charge_status_show(struct device *dev,
> }
> }
>
> - return sprintf(buf, "%s\n", result);
> + return sysfs_emit(buf, "%s\n", result);
> }
> static DEVICE_ATTR_RO(charge_status);
>
> @@ -541,7 +541,7 @@ static ssize_t vbat_show(struct device *dev,
> if (ret)
> return ret;
>
> - return sprintf(buf, "%d\n", val.intval);
> + return sysfs_emit(buf, "%d\n", val.intval);
> }
> static DEVICE_ATTR_RO(vbat);
>
> @@ -557,7 +557,7 @@ static ssize_t vbat_avg_show(struct device *dev,
> if (ret)
> return ret;
>
> - return sprintf(buf, "%d\n", val.intval);
> + return sysfs_emit(buf, "%d\n", val.intval);
> }
> static DEVICE_ATTR_RO(vbat_avg);
>
> @@ -573,7 +573,7 @@ static ssize_t ibat_show(struct device *dev,
> if (ret)
> return ret;
>
> - return sprintf(buf, "%d\n", val.intval);
> + return sysfs_emit(buf, "%d\n", val.intval);
> }
> static DEVICE_ATTR_RO(ibat);
>
> @@ -589,7 +589,7 @@ static ssize_t force_telemetry_show(struct device *dev,
> if (ret)
> return ret;
>
> - return sprintf(buf, "%u\n", regval & BIT(2) ? 1 : 0);
> + return sysfs_emit(buf, "%u\n", regval & BIT(2) ? 1 : 0);
> }
>
> static ssize_t force_telemetry_store(struct device *dev,
> @@ -628,7 +628,7 @@ static ssize_t arm_ship_mode_show(struct device *dev,
> if (ret)
> return ret;
>
> - return sprintf(buf, "%u\n",
> + return sysfs_emit(buf, "%u\n",
> regval == LTC4162L_ARM_SHIP_MODE_MAGIC ? 1 : 0);
> }
>
> diff --git a/drivers/power/supply/mp2629_charger.c b/drivers/power/supply/mp2629_charger.c
> index bf9c27b463a8..3a2a28fbba73 100644
> --- a/drivers/power/supply/mp2629_charger.c
> +++ b/drivers/power/supply/mp2629_charger.c
> @@ -519,7 +519,7 @@ static ssize_t batt_impedance_compensation_show(struct device *dev,
> return ret;
>
> rval = (rval >> 4) * 10;
> - return sprintf(buf, "%d mohm\n", rval);
> + return sysfs_emit(buf, "%d mohm\n", rval);
> }
>
> static ssize_t batt_impedance_compensation_store(struct device *dev,
> diff --git a/drivers/power/supply/olpc_battery.c b/drivers/power/supply/olpc_battery.c
> index a5da20ffd685..4751e5e6b3b2 100644
> --- a/drivers/power/supply/olpc_battery.c
> +++ b/drivers/power/supply/olpc_battery.c
> @@ -460,7 +460,7 @@ static int olpc_bat_get_property(struct power_supply *psy,
> if (ret)
> return ret;
>
> - sprintf(data->bat_serial, "%016llx", (long long)be64_to_cpu(ser_buf));
> + sysfs_emit(data->bat_serial, "%016llx", (long long)be64_to_cpu(ser_buf));
> val->strval = data->bat_serial;
> break;
> case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
> @@ -568,7 +568,7 @@ static ssize_t olpc_bat_error_read(struct device *dev,
> if (ret < 0)
> return ret;
>
> - return sprintf(buf, "%d\n", ec_byte);
> + return sysfs_emit(buf, "%d\n", ec_byte);
> }
>
> static struct device_attribute olpc_bat_error = {
> diff --git a/drivers/power/supply/pcf50633-charger.c b/drivers/power/supply/pcf50633-charger.c
> index 8c5d892f6350..fd44cb8ac0e2 100644
> --- a/drivers/power/supply/pcf50633-charger.c
> +++ b/drivers/power/supply/pcf50633-charger.c
> @@ -153,7 +153,7 @@ show_chgmode(struct device *dev, struct device_attribute *attr, char *buf)
> u8 mbcs2 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2);
> u8 chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);
>
> - return sprintf(buf, "%d\n", chgmod);
> + return sysfs_emit(buf, "%d\n", chgmod);
> }
> static DEVICE_ATTR(chgmode, S_IRUGO, show_chgmode, NULL);
>
> @@ -174,7 +174,7 @@ show_usblim(struct device *dev, struct device_attribute *attr, char *buf)
> else
> ma = 0;
>
> - return sprintf(buf, "%u\n", ma);
> + return sysfs_emit(buf, "%u\n", ma);
> }
>
> static ssize_t set_usblim(struct device *dev,
> @@ -207,7 +207,7 @@ show_chglim(struct device *dev, struct device_attribute *attr, char *buf)
>
> ma = (mbc->pcf->pdata->charger_reference_current_ma * mbcc5) >> 8;
>
> - return sprintf(buf, "%u\n", ma);
> + return sysfs_emit(buf, "%u\n", ma);
> }
>
> static ssize_t set_chglim(struct device *dev,
> diff --git a/drivers/power/supply/pmu_battery.c b/drivers/power/supply/pmu_battery.c
> index eaab7500d99b..623a4e80a21f 100644
> --- a/drivers/power/supply/pmu_battery.c
> +++ b/drivers/power/supply/pmu_battery.c
> @@ -165,7 +165,7 @@ static int __init pmu_bat_init(void)
> if (!pbat)
> break;
>
> - sprintf(pbat->name, "PMU_battery_%d", i);
> + sysfs_emit(pbat->name, "PMU_battery_%d", i);
> pbat->bat_desc.name = pbat->name;
> pbat->bat_desc.properties = pmu_bat_props;
> pbat->bat_desc.num_properties = ARRAY_SIZE(pmu_bat_props);
> diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c
> index 6ca7d3985a40..9915b701c894 100644
> --- a/drivers/power/supply/power_supply_sysfs.c
> +++ b/drivers/power/supply/power_supply_sysfs.c
> @@ -249,11 +249,11 @@ static ssize_t power_supply_show_usb_type(struct device *dev,
> usb_type = desc->usb_types[i];
>
> if (value->intval == usb_type) {
> - count += sprintf(buf + count, "[%s] ",
> + count += sysfs_emit_at(buf, count, "[%s] ",
> POWER_SUPPLY_USB_TYPE_TEXT[usb_type]);
> match = true;
> } else {
> - count += sprintf(buf + count, "%s ",
> + count += sysfs_emit_at(buf, count, "%s ",
> POWER_SUPPLY_USB_TYPE_TEXT[usb_type]);
> }
> }
> @@ -297,7 +297,7 @@ static ssize_t power_supply_show_property(struct device *dev,
>
> if (ps_attr->text_values_len > 0 &&
> value.intval < ps_attr->text_values_len && value.intval >= 0) {
> - return sprintf(buf, "%s\n", ps_attr->text_values[value.intval]);
> + return sysfs_emit(buf, "%s\n", ps_attr->text_values[value.intval]);
> }
>
> switch (psp) {
> @@ -306,10 +306,10 @@ static ssize_t power_supply_show_property(struct device *dev,
> &value, buf);
> break;
> case POWER_SUPPLY_PROP_MODEL_NAME ... POWER_SUPPLY_PROP_SERIAL_NUMBER:
> - ret = sprintf(buf, "%s\n", value.strval);
> + ret = sysfs_emit(buf, "%s\n", value.strval);
> break;
> default:
> - ret = sprintf(buf, "%d\n", value.intval);
> + ret = sysfs_emit(buf, "%d\n", value.intval);
> }
>
> return ret;
> @@ -413,7 +413,7 @@ void power_supply_init_attrs(struct device_type *dev_type)
> if (!power_supply_attrs[i].prop_name) {
> pr_warn("%s: Property %d skipped because it is missing from power_supply_attrs\n",
> __func__, i);
> - sprintf(power_supply_attrs[i].attr_name, "_err_%d", i);
> + sysfs_emit(power_supply_attrs[i].attr_name, "_err_%d", i);
> } else {
> str_to_lower(power_supply_attrs[i].attr_name);
> }
> diff --git a/drivers/power/supply/sbs-battery.c b/drivers/power/supply/sbs-battery.c
> index c4a95b01463a..2a9fa843707e 100644
> --- a/drivers/power/supply/sbs-battery.c
> +++ b/drivers/power/supply/sbs-battery.c
> @@ -830,7 +830,7 @@ static int sbs_get_battery_serial_number(struct i2c_client *client,
> if (ret < 0)
> return ret;
>
> - sprintf(sbs_serial, "%04x", ret);
> + sysfs_emit(sbs_serial, "%04x", ret);
> val->strval = sbs_serial;
>
> return 0;
> diff --git a/drivers/power/supply/test_power.c b/drivers/power/supply/test_power.c
> index 5f510ddc946d..751c9b0f4adf 100644
> --- a/drivers/power/supply/test_power.c
> +++ b/drivers/power/supply/test_power.c
> @@ -352,7 +352,7 @@ static int param_set_ac_online(const char *key, const struct kernel_param *kp)
>
> static int param_get_ac_online(char *buffer, const struct kernel_param *kp)
> {
> - return sprintf(buffer, "%s\n",
> + return sysfs_emit(buffer, "%s\n",
> map_get_key(map_ac_online, ac_online, "unknown"));
> }
>
> @@ -365,7 +365,7 @@ static int param_set_usb_online(const char *key, const struct kernel_param *kp)
>
> static int param_get_usb_online(char *buffer, const struct kernel_param *kp)
> {
> - return sprintf(buffer, "%s\n",
> + return sysfs_emit(buffer, "%s\n",
> map_get_key(map_ac_online, usb_online, "unknown"));
> }
>
> @@ -379,7 +379,7 @@ static int param_set_battery_status(const char *key,
>
> static int param_get_battery_status(char *buffer, const struct kernel_param *kp)
> {
> - return sprintf(buffer, "%s\n",
> + return sysfs_emit(buffer, "%s\n",
> map_get_key(map_ac_online, battery_status, "unknown"));
> }
>
> @@ -393,7 +393,7 @@ static int param_set_battery_health(const char *key,
>
> static int param_get_battery_health(char *buffer, const struct kernel_param *kp)
> {
> - return sprintf(buffer, "%s\n",
> + return sysfs_emit(buffer, "%s\n",
> map_get_key(map_ac_online, battery_health, "unknown"));
> }
>
> @@ -408,7 +408,7 @@ static int param_set_battery_present(const char *key,
> static int param_get_battery_present(char *buffer,
> const struct kernel_param *kp)
> {
> - return sprintf(buffer, "%s\n",
> + return sysfs_emit(buffer, "%s\n",
> map_get_key(map_ac_online, battery_present, "unknown"));
> }
>
> @@ -424,7 +424,7 @@ static int param_set_battery_technology(const char *key,
> static int param_get_battery_technology(char *buffer,
> const struct kernel_param *kp)
> {
> - return sprintf(buffer, "%s\n",
> + return sysfs_emit(buffer, "%s\n",
> map_get_key(map_ac_online, battery_technology,
> "unknown"));
> }
> diff --git a/drivers/power/supply/wm8350_power.c b/drivers/power/supply/wm8350_power.c
> index 908cfd45d262..f2786761299c 100644
> --- a/drivers/power/supply/wm8350_power.c
> +++ b/drivers/power/supply/wm8350_power.c
> @@ -176,7 +176,7 @@ static ssize_t charger_state_show(struct device *dev,
> return 0;
> }
>
> - return sprintf(buf, "%s\n", charge);
> + return sysfs_emit(buf, "%s\n", charge);
> }
>
> static DEVICE_ATTR_RO(charger_state);
> --
> 2.25.1

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