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72b2aa3819
The iio_utils uses a digit calculation in order to know length of the file name containing a buffer number. The digit calculation does not work for number 0. This leads to allocation of one character too small buffer for the file-name when file name contains value '0'. (Eg. buffer0). Fix digit calculation by returning one digit to be present for number '0'. Fixes: 096f9b862e60 ("tools:iio:iio_utils: implement digit calculation") Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com> Link: https://lore.kernel.org/r/Y0f+tKCz+ZAIoroQ@dc75zzyyyyyyyyyyyyycy-3.rev.dnainternet.fi Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>