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Prevent integer overflow for input trigger

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Iwan Timmer
2015-05-23 16:08:51 +02:00
parent 5f9a31da5b
commit d1c8ddefa7
1 changed files with 1 additions and 1 deletions
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2
src/input.c
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@@ -248,7 +248,7 @@ static char input_convert_value_byte(struct input_event *ev, struct input_device
else if (ev->value>parms->max) else if (ev->value>parms->max)
return UCHAR_MAX; return UCHAR_MAX;
else { else {
int value = ev->value + parms->flat; int value = ev->value - parms->flat;
return (value-parms->min) * UCHAR_MAX / (parms->diff-parms->flat); return (value-parms->min) * UCHAR_MAX / (parms->diff-parms->flat);
} }
} }