iio: backend: fix uninitialized data in debugfs

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If the *ppos value is non-zero then simple_write_to_buffer() will not
initialize the start of the buf[] buffer.  Non-zero ppos values aren't
going to work at all.  Check for that at the start of the function and
return -ENOSPC.

Fixes: cdf01e0809 ("iio: backend: add debugFs interface")
Signed-off-by: Dan Carpenter <error27@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

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Dan Carpenter 2026-05-25 10:16:11 +03:00 • committed by Jonathan Cameron

parent eaaa7eef18

commit a6e8b14a48

1 changed files with 1 additions and 1 deletions

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drivers/iio/industrialio-backend.c

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