diff options
author | Matti Vaittinen <mazziesaccount@gmail.com> | 2022-10-13 15:04:04 +0300 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-11-03 17:52:28 +0300 |
commit | 37ecf8cbda4f344e998c01a3a0cb838fa92c63fc (patch) | |
tree | bc151bb00237e710a68c4257a13811e84e923225 /tools | |
parent | cebbc8d335d6bcc1316584f779c08f80287c6af8 (diff) | |
download | linux-37ecf8cbda4f344e998c01a3a0cb838fa92c63fc.tar.xz |
tools: iio: iio_utils: fix digit calculation
commit 72b2aa38191bcba28389b0e20bf6b4f15017ff2b upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools')
-rw-r--r-- | tools/iio/iio_utils.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/iio/iio_utils.c b/tools/iio/iio_utils.c index 55272fef3b50..d60a252577f0 100644 --- a/tools/iio/iio_utils.c +++ b/tools/iio/iio_utils.c @@ -546,6 +546,10 @@ static int calc_digits(int num) { int count = 0; + /* It takes a digit to represent zero */ + if (!num) + return 1; + while (num != 0) { num /= 10; count++; |