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| author | Matti Vaittinen <mazziesaccount@gmail.com> | 2022-10-13 15:04:04 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-11-03 23:56:53 +0900 |
| commit | cb972e6d01efaccdb5ef89eeb6a0ea269719c2be (patch) | |
| tree | 5d243994d67fced2fc8eae636ce48a31910dbfa4 /tools/iio | |
| parent | 8f1cd9633d1f21efc13e8fc75be8f2b6bb85e38c (diff) | |
| download | linux-stable-cb972e6d01efaccdb5ef89eeb6a0ea269719c2be.tar.gz linux-stable-cb972e6d01efaccdb5ef89eeb6a0ea269719c2be.tar.bz2 linux-stable-cb972e6d01efaccdb5ef89eeb6a0ea269719c2be.zip | |
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/iio')
| -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 7399eb7f1378..d66b18c54606 100644 --- a/tools/iio/iio_utils.c +++ b/tools/iio/iio_utils.c @@ -543,6 +543,10 @@ 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++; |