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iio: iio_enum_available_read(): Convert to sysfs_emit_at()

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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>
This commit is contained in:
Lars-Peter Clausen
2021-03-20 08:14:03 +01:00
committed by Jonathan Cameron
parent 83ca56b663
commit 0207483b22
1 changed files with 1 additions and 1 deletions
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2
drivers/iio/industrialio-core.c
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@@ -504,7 +504,7 @@ ssize_t iio_enum_available_read(struct iio_dev *indio_dev,
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 */