[PATCH] iio: st_lsm6dsx: Replace scnprintf with sysfs_emit

From: Akshay Bansod
Date: Wed Jul 02 2025 - 09:59:50 EST


Update the sysfs interface for sampling frequency and scale attributes.
Replace `scnprintf()` with `sysfs_emit_at()` which is PAGE_SIZE-aware
and recommended for use in sysfs.

Signed-off-by: Akshay Bansod <akbansd@xxxxxxxxx>
---

Testing:
- Built the driver (`st_lsm6dsx_i2c`) as a module.
- Tested using `i2c-stub` to mock the device.
- Verified that reading sysfs attributes like `sampling_frequency_available`
works correctly and shows no change in functionality.

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
index c65ad4982..1cef10919 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
@@ -2035,7 +2035,7 @@ st_lsm6dsx_sysfs_sampling_frequency_avail(struct device *dev,

odr_table = &sensor->hw->settings->odr_table[sensor->id];
for (i = 0; i < odr_table->odr_len; i++)
- len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%03d ",
+ len += sysfs_emit_at(buf, len, "%d.%03d ",
odr_table->odr_avl[i].milli_hz / 1000,
odr_table->odr_avl[i].milli_hz % 1000);
buf[len - 1] = '\n';
@@ -2054,7 +2054,7 @@ static ssize_t st_lsm6dsx_sysfs_scale_avail(struct device *dev,

fs_table = &hw->settings->fs_table[sensor->id];
for (i = 0; i < fs_table->fs_len; i++)
- len += scnprintf(buf + len, PAGE_SIZE - len, "0.%09u ",
+ len += sysfs_emit_at(buf, len, "0.%09u ",
fs_table->fs_avl[i].gain);
buf[len - 1] = '\n';

--
2.49.0