Commit 72b2aa38 authored by Matti Vaittinen's avatar Matti Vaittinen Committed by Jonathan Cameron

tools: iio: iio_utils: fix digit calculation

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: 096f9b86 ("tools:iio:iio_utils: implement digit calculation")
Signed-off-by: default avatarMatti 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: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent 174dac5d
...@@ -547,6 +547,10 @@ static int calc_digits(int num) ...@@ -547,6 +547,10 @@ static int calc_digits(int num)
{ {
int count = 0; int count = 0;
/* It takes a digit to represent zero */
if (!num)
return 1;
while (num != 0) { while (num != 0) {
num /= 10; num /= 10;
count++; count++;
......
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