From: Lars-Peter Clausen Date: Mon, 22 Oct 2012 11:15:00 +0000 (+0100) Subject: iio: Reject trailing garbage when parsing fixed point numbers X-Git-Tag: upstream/snapshot3+hdmi~6135^2~668^2~2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=02330acda7ef88865e62e2763df2cdd735607cb4;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git iio: Reject trailing garbage when parsing fixed point numbers When parsing a fixed point number IIO stops parsing the string once it has reached the last requested decimal place. This means that the remainder of the string is silently accepted regardless, of whether it is part of a valid number or not. This patch modifies the code to scan the whole string and only accept valid numbers. Since fract_mult is 0 after the last decimal place any digit that may follows won't affect the result. Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index 0994239..7bb570b 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -445,8 +445,6 @@ static ssize_t iio_write_channel_info(struct device *dev, integer = integer*10 + *buf - '0'; else { fract += fract_mult*(*buf - '0'); - if (fract_mult == 1) - break; fract_mult /= 10; } } else if (*buf == '\n') {