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>
for (i = 0; i < e->num_items; ++i) {
if (!e->items[i])
continue;
- len += scnprintf(buf + len, PAGE_SIZE - len, "%s ", e->items[i]);
+ len += sysfs_emit_at(buf, len, "%s ", e->items[i]);
}
/* replace last space with a newline */