iio: ad9523: Use sysfs_emit()

sysfs_emit() is preferred over raw s*printf() for sysfs attributes since it
knows about the sysfs buffer specifics and has some built-in checks for
size and alignment.

Use sysfs_emit() to format the custom device attributes of the ad9523
driver.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20211216185217.1054495-5-lars@metafoo.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/frequency/ad9523.c b/drivers/iio/frequency/ad9523.c
index bdb0bc3..a0f92c3 100644 (file)
--- a/drivers/iio/frequency/ad9523.c
+++ b/drivers/iio/frequency/ad9523.c
@@ -551,7 +551,7 @@ static ssize_t ad9523_show(struct device *dev,
        mutex_lock(&st->lock);
        ret = ad9523_read(indio_dev, AD9523_READBACK_0);
        if (ret >= 0) {
-               ret = sprintf(buf, "%d\n", !!(ret & (1 <<
+               ret = sysfs_emit(buf, "%d\n", !!(ret & (1 <<
                        (u32)this_attr->address)));
        }
        mutex_unlock(&st->lock);