[PATCH linux-next v2] power: supply: use sysfs_emit() to instead of scnprintf()
From: ye.xingchen
Date: Mon Dec 05 2022 - 22:14:20 EST
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>
v1 -> v2
Convert to use sysfs_emit_at() API in power/supply/twl4030_charger.c.
---
drivers/power/supply/ab8500_fg.c | 18 +++++++++---------
drivers/power/supply/bq24190_charger.c | 2 +-
drivers/power/supply/bq24257_charger.c | 8 +++-----
drivers/power/supply/lp8788-charger.c | 7 +++----
drivers/power/supply/max14577_charger.c | 2 +-
drivers/power/supply/max77693_charger.c | 6 +++---
drivers/power/supply/twl4030_charger.c | 6 ++----
7 files changed, 22 insertions(+), 27 deletions(-)
diff --git a/drivers/power/supply/ab8500_fg.c b/drivers/power/supply/ab8500_fg.c
index c6c9804280db..d989eadaa933 100644
--- a/drivers/power/supply/ab8500_fg.c
+++ b/drivers/power/supply/ab8500_fg.c
@@ -2594,7 +2594,7 @@ static ssize_t ab8505_powercut_flagtime_read(struct device *dev,
goto fail;
}
- return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0x7F));
+ return sysfs_emit(buf, "%d\n", (reg_value & 0x7F));
fail:
return ret;
@@ -2644,7 +2644,7 @@ static ssize_t ab8505_powercut_maxtime_read(struct device *dev,
goto fail;
}
- return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0x7F));
+ return sysfs_emit(buf, "%d\n", (reg_value & 0x7F));
fail:
return ret;
@@ -2695,7 +2695,7 @@ static ssize_t ab8505_powercut_restart_read(struct device *dev,
goto fail;
}
- return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0xF));
+ return sysfs_emit(buf, "%d\n", (reg_value & 0xF));
fail:
return ret;
@@ -2746,7 +2746,7 @@ static ssize_t ab8505_powercut_timer_read(struct device *dev,
goto fail;
}
- return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0x7F));
+ return sysfs_emit(buf, "%d\n", (reg_value & 0x7F));
fail:
return ret;
@@ -2769,7 +2769,7 @@ static ssize_t ab8505_powercut_restart_counter_read(struct device *dev,
goto fail;
}
- return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0xF0) >> 4);
+ return sysfs_emit(buf, "%d\n", (reg_value & 0xF0) >> 4);
fail:
return ret;
@@ -2790,7 +2790,7 @@ static ssize_t ab8505_powercut_read(struct device *dev,
if (ret < 0)
goto fail;
- return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0x1));
+ return sysfs_emit(buf, "%d\n", (reg_value & 0x1));
fail:
return ret;
@@ -2841,7 +2841,7 @@ static ssize_t ab8505_powercut_flag_read(struct device *dev,
goto fail;
}
- return scnprintf(buf, PAGE_SIZE, "%d\n", ((reg_value & 0x10) >> 4));
+ return sysfs_emit(buf, "%d\n", ((reg_value & 0x10) >> 4));
fail:
return ret;
@@ -2864,7 +2864,7 @@ static ssize_t ab8505_powercut_debounce_read(struct device *dev,
goto fail;
}
- return scnprintf(buf, PAGE_SIZE, "%d\n", (reg_value & 0x7));
+ return sysfs_emit(buf, "%d\n", (reg_value & 0x7));
fail:
return ret;
@@ -2914,7 +2914,7 @@ static ssize_t ab8505_powercut_enable_status_read(struct device *dev,
goto fail;
}
- return scnprintf(buf, PAGE_SIZE, "%d\n", ((reg_value & 0x20) >> 5));
+ return sysfs_emit(buf, "%d\n", ((reg_value & 0x20) >> 5));
fail:
return ret;
diff --git a/drivers/power/supply/bq24190_charger.c b/drivers/power/supply/bq24190_charger.c
index 2b2c3a4391c1..be34b9848450 100644
--- a/drivers/power/supply/bq24190_charger.c
+++ b/drivers/power/supply/bq24190_charger.c
@@ -463,7 +463,7 @@ static ssize_t bq24190_sysfs_show(struct device *dev,
if (ret)
count = ret;
else
- count = scnprintf(buf, PAGE_SIZE, "%hhx\n", v);
+ count = sysfs_emit(buf, "%hhx\n", v);
pm_runtime_mark_last_busy(bdi->dev);
pm_runtime_put_autosuspend(bdi->dev);
diff --git a/drivers/power/supply/bq24257_charger.c b/drivers/power/supply/bq24257_charger.c
index ab4c49788c58..103ddc2b3def 100644
--- a/drivers/power/supply/bq24257_charger.c
+++ b/drivers/power/supply/bq24257_charger.c
@@ -767,8 +767,7 @@ static ssize_t bq24257_show_ovp_voltage(struct device *dev,
struct power_supply *psy = dev_get_drvdata(dev);
struct bq24257_device *bq = power_supply_get_drvdata(psy);
- return scnprintf(buf, PAGE_SIZE, "%u\n",
- bq24257_vovp_map[bq->init_data.vovp]);
+ return sysfs_emit(buf, "%u\n", bq24257_vovp_map[bq->init_data.vovp]);
}
static ssize_t bq24257_show_in_dpm_voltage(struct device *dev,
@@ -778,8 +777,7 @@ static ssize_t bq24257_show_in_dpm_voltage(struct device *dev,
struct power_supply *psy = dev_get_drvdata(dev);
struct bq24257_device *bq = power_supply_get_drvdata(psy);
- return scnprintf(buf, PAGE_SIZE, "%u\n",
- bq24257_vindpm_map[bq->init_data.vindpm]);
+ return sysfs_emit(buf, "%u\n", bq24257_vindpm_map[bq->init_data.vindpm]);
}
static ssize_t bq24257_sysfs_show_enable(struct device *dev,
@@ -800,7 +798,7 @@ static ssize_t bq24257_sysfs_show_enable(struct device *dev,
if (ret < 0)
return ret;
- return scnprintf(buf, PAGE_SIZE, "%d\n", ret);
+ return sysfs_emit(buf, "%d\n", ret);
}
static ssize_t bq24257_sysfs_set_enable(struct device *dev,
diff --git a/drivers/power/supply/lp8788-charger.c b/drivers/power/supply/lp8788-charger.c
index f5f47a0aa1e3..755b6a4379b8 100644
--- a/drivers/power/supply/lp8788-charger.c
+++ b/drivers/power/supply/lp8788-charger.c
@@ -602,7 +602,7 @@ static ssize_t lp8788_show_charger_status(struct device *dev,
lp8788_read_byte(pchg->lp, LP8788_CHG_STATUS, &data);
state = (data & LP8788_CHG_STATE_M) >> LP8788_CHG_STATE_S;
- return scnprintf(buf, PAGE_SIZE, "%s\n", desc[state]);
+ return sysfs_emit(buf, "%s\n", desc[state]);
}
static ssize_t lp8788_show_eoc_time(struct device *dev,
@@ -618,8 +618,7 @@ static ssize_t lp8788_show_eoc_time(struct device *dev,
lp8788_read_byte(pchg->lp, LP8788_CHG_EOC, &val);
val = (val & LP8788_CHG_EOC_TIME_M) >> LP8788_CHG_EOC_TIME_S;
- return scnprintf(buf, PAGE_SIZE, "End Of Charge Time: %s\n",
- stime[val]);
+ return sysfs_emit(buf, "End Of Charge Time: %s\n", stime[val]);
}
static ssize_t lp8788_show_eoc_level(struct device *dev,
@@ -642,7 +641,7 @@ static ssize_t lp8788_show_eoc_level(struct device *dev,
val = (val & LP8788_CHG_EOC_LEVEL_M) >> LP8788_CHG_EOC_LEVEL_S;
level = mode ? abs_level[val] : relative_level[val];
- return scnprintf(buf, PAGE_SIZE, "End Of Charge Level: %s\n", level);
+ return sysfs_emit(buf, "End Of Charge Level: %s\n", level);
}
static DEVICE_ATTR(charger_status, S_IRUSR, lp8788_show_charger_status, NULL);
diff --git a/drivers/power/supply/max14577_charger.c b/drivers/power/supply/max14577_charger.c
index f244cd902eb9..96f9de775043 100644
--- a/drivers/power/supply/max14577_charger.c
+++ b/drivers/power/supply/max14577_charger.c
@@ -532,7 +532,7 @@ static ssize_t show_fast_charge_timer(struct device *dev,
break;
}
- return scnprintf(buf, PAGE_SIZE, "%u\n", val);
+ return sysfs_emit(buf, "%u\n", val);
}
static ssize_t store_fast_charge_timer(struct device *dev,
diff --git a/drivers/power/supply/max77693_charger.c b/drivers/power/supply/max77693_charger.c
index a2c5c9858639..794c8c054450 100644
--- a/drivers/power/supply/max77693_charger.c
+++ b/drivers/power/supply/max77693_charger.c
@@ -296,7 +296,7 @@ static ssize_t fast_charge_timer_show(struct device *dev,
break;
}
- return scnprintf(buf, PAGE_SIZE, "%u\n", val);
+ return sysfs_emit(buf, "%u\n", val);
}
static int max77693_set_fast_charge_timer(struct max77693_charger *chg,
@@ -357,7 +357,7 @@ static ssize_t top_off_threshold_current_show(struct device *dev,
else
val = data * 50000;
- return scnprintf(buf, PAGE_SIZE, "%u\n", val);
+ return sysfs_emit(buf, "%u\n", val);
}
static int max77693_set_top_off_threshold_current(struct max77693_charger *chg,
@@ -405,7 +405,7 @@ static ssize_t top_off_timer_show(struct device *dev,
val = data * 10;
- return scnprintf(buf, PAGE_SIZE, "%u\n", val);
+ return sysfs_emit(buf, "%u\n", val);
}
static int max77693_set_top_off_timer(struct max77693_charger *chg,
diff --git a/drivers/power/supply/twl4030_charger.c b/drivers/power/supply/twl4030_charger.c
index 1bc49b2e12e8..53a0ea5a61da 100644
--- a/drivers/power/supply/twl4030_charger.c
+++ b/drivers/power/supply/twl4030_charger.c
@@ -726,11 +726,9 @@ twl4030_bci_mode_show(struct device *dev,
for (i = 0; i < ARRAY_SIZE(modes); i++)
if (mode == i)
- len += scnprintf(buf+len, PAGE_SIZE-len,
- "[%s] ", modes[i]);
+ len += sysfs_emit_at(buf, len, "[%s] ", modes[i]);
else
- len += scnprintf(buf+len, PAGE_SIZE-len,
- "%s ", modes[i]);
+ len += sysfs_emit_at(buf, len, "%s ", modes[i]);
buf[len-1] = '\n';
return len;
}
--
2.25.1