From: Dan Carpenter <dan.carpenter@oracle.com>
To: Jonathan Cameron <jic23@cam.ac.uk>
Cc: Lars-Peter Clausen <lars@metafoo.de>,
linux-iio@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch] iio:gyro: adis16136: divide by zero in write_frequency()
Date: Tue, 27 Nov 2012 07:24:52 +0000 [thread overview]
Message-ID: <20121127072452.GA8239@elgon.mountain> (raw)
It's slightly cleaner to use kstrtouint() because we pass unsigned ints
to adis16136_set_freq(). On 64 bit systems, if the user passed LONG_MIN
then it we would get past the test against zero but crash in
adis16136_set_freq() because we truncate the high bits away.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/iio/gyro/adis16136.c b/drivers/iio/gyro/adis16136.c
index 05486df..b4ee339 100644
--- a/drivers/iio/gyro/adis16136.c
+++ b/drivers/iio/gyro/adis16136.c
@@ -203,10 +203,10 @@ static ssize_t adis16136_write_frequency(struct device *dev,
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct adis16136 *adis16136 = iio_priv(indio_dev);
- long val;
+ unsigned int val;
int ret;
- ret = kstrtol(buf, 10, &val);
+ ret = kstrtouint(buf, 10, &val);
if (ret)
return ret;
WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <dan.carpenter@oracle.com>
To: Jonathan Cameron <jic23@cam.ac.uk>
Cc: Lars-Peter Clausen <lars@metafoo.de>,
linux-iio@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch] iio:gyro: adis16136: divide by zero in write_frequency()
Date: Tue, 27 Nov 2012 10:24:52 +0300 [thread overview]
Message-ID: <20121127072452.GA8239@elgon.mountain> (raw)
It's slightly cleaner to use kstrtouint() because we pass unsigned ints
to adis16136_set_freq(). On 64 bit systems, if the user passed LONG_MIN
then it we would get past the test against zero but crash in
adis16136_set_freq() because we truncate the high bits away.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/iio/gyro/adis16136.c b/drivers/iio/gyro/adis16136.c
index 05486df..b4ee339 100644
--- a/drivers/iio/gyro/adis16136.c
+++ b/drivers/iio/gyro/adis16136.c
@@ -203,10 +203,10 @@ static ssize_t adis16136_write_frequency(struct device *dev,
{
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
struct adis16136 *adis16136 = iio_priv(indio_dev);
- long val;
+ unsigned int val;
int ret;
- ret = kstrtol(buf, 10, &val);
+ ret = kstrtouint(buf, 10, &val);
if (ret)
return ret;
next reply other threads:[~2012-11-27 7:24 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-27 7:24 Dan Carpenter [this message]
2012-11-27 7:24 ` [patch] iio:gyro: adis16136: divide by zero in write_frequency() Dan Carpenter
2012-11-27 18:40 ` Lars-Peter Clausen
2012-11-27 18:40 ` Lars-Peter Clausen
2012-11-30 13:13 ` Jonathan Cameron
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