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iio: iio_enum_available_read(): Convert to sysfs_emit_at()
sysfs_emit() is preferred over raw s*printf() for sysfs attributes since it knows about the sysfs buffer specifics and has some built-in sanity checks. Convert the iio_enum_available_read() function to use sysfs_emit_at() instead of scnprintf(). The conversion is straight forward, the only difference is that sysfs_emit_at() takes the buffers start address and an offset as parameters and already knows about the buffer's size limit. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Link: https://lore.kernel.org/r/20210320071405.9347-3-lars@metafoo.de Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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@ -504,7 +504,7 @@ ssize_t iio_enum_available_read(struct iio_dev *indio_dev,
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for (i = 0; i < e->num_items; ++i) {
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if (!e->items[i])
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continue;
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len += scnprintf(buf + len, PAGE_SIZE - len, "%s ", e->items[i]);
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len += sysfs_emit_at(buf, len, "%s ", e->items[i]);
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}
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/* replace last space with a newline */
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