iio: chemical: scd30_core: use sysfs_emit() to instead of scnprintf()

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: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230113141117.23353-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/chemical/scd30_core.c b/drivers/iio/chemical/scd30_core.c
index 682fca39d14d63fcbdff3c3c0b2a03e0e0950821..e0bb1dd5e7903a31bb5f6e0886decf643405cea4 100644 (file)
--- a/drivers/iio/chemical/scd30_core.c
+++ b/drivers/iio/chemical/scd30_core.c
@@ -354,7 +354,7 @@ static ssize_t sampling_frequency_available_show(struct device *dev, struct devi
        ssize_t len = 0;
 
        do {
-               len += scnprintf(buf + len, PAGE_SIZE - len, "0.%09u ", 1000000000 / i);
+               len += sysfs_emit_at(buf, len, "0.%09u ", 1000000000 / i);
                /*
                 * Not all values fit PAGE_SIZE buffer hence print every 6th
                 * (each frequency differs by 6s in time domain from the
@@ -380,7 +380,7 @@ static ssize_t calibration_auto_enable_show(struct device *dev, struct device_at
        ret = scd30_command_read(state, CMD_ASC, &val);
        mutex_unlock(&state->lock);
 
-       return ret ?: sprintf(buf, "%d\n", val);
+       return ret ?: sysfs_emit(buf, "%d\n", val);
 }
 
 static ssize_t calibration_auto_enable_store(struct device *dev, struct device_attribute *attr,
@@ -414,7 +414,7 @@ static ssize_t calibration_forced_value_show(struct device *dev, struct device_a
        ret = scd30_command_read(state, CMD_FRC, &val);
        mutex_unlock(&state->lock);
 
-       return ret ?: sprintf(buf, "%d\n", val);
+       return ret ?: sysfs_emit(buf, "%d\n", val);
 }
 
 static ssize_t calibration_forced_value_store(struct device *dev, struct device_attribute *attr,