diff options
author | Dan Carpenter <dan.carpenter@oracle.com> | 2012-08-18 08:48:00 (GMT) |
---|---|---|
committer | Jonathan Cameron <jic23@kernel.org> | 2012-08-27 18:00:51 (GMT) |
commit | 50d4b3062d6d4f165c76854a7644b1502836f9b9 (patch) | |
tree | be3054fcd1be653399d24583a6a219b08fdf9113 /drivers/staging/iio | |
parent | 95d1c8c7e26e303ccab5b65fe0ce04f70f42ea8a (diff) | |
download | linux-fsl-qoriq-50d4b3062d6d4f165c76854a7644b1502836f9b9.tar.xz |
staging:iio: prevent divide by zero bugs
"val" is used as a divisor later, so we should check for zero here to
avoid a division by zero.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/staging/iio')
-rw-r--r-- | drivers/staging/iio/adc/ad7192.c | 2 | ||||
-rw-r--r-- | drivers/staging/iio/gyro/adis16260_core.c | 2 | ||||
-rw-r--r-- | drivers/staging/iio/imu/adis16400_core.c | 2 | ||||
-rw-r--r-- | drivers/staging/iio/meter/ade7753.c | 2 | ||||
-rw-r--r-- | drivers/staging/iio/meter/ade7754.c | 2 | ||||
-rw-r--r-- | drivers/staging/iio/meter/ade7759.c | 2 |
6 files changed, 12 insertions, 0 deletions
diff --git a/drivers/staging/iio/adc/ad7192.c b/drivers/staging/iio/adc/ad7192.c index 0958372..19a064d 100644 --- a/drivers/staging/iio/adc/ad7192.c +++ b/drivers/staging/iio/adc/ad7192.c @@ -647,6 +647,8 @@ static ssize_t ad7192_write_frequency(struct device *dev, ret = strict_strtoul(buf, 10, &lval); if (ret) return ret; + if (lval == 0) + return -EINVAL; mutex_lock(&indio_dev->mlock); if (iio_buffer_enabled(indio_dev)) { diff --git a/drivers/staging/iio/gyro/adis16260_core.c b/drivers/staging/iio/gyro/adis16260_core.c index 93aa431..eb8e9d6 100644 --- a/drivers/staging/iio/gyro/adis16260_core.c +++ b/drivers/staging/iio/gyro/adis16260_core.c @@ -195,6 +195,8 @@ static ssize_t adis16260_write_frequency(struct device *dev, ret = strict_strtol(buf, 10, &val); if (ret) return ret; + if (val == 0) + return -EINVAL; mutex_lock(&indio_dev->mlock); if (spi_get_device_id(st->us)) { diff --git a/drivers/staging/iio/imu/adis16400_core.c b/drivers/staging/iio/imu/adis16400_core.c index 1f4c177..a618327 100644 --- a/drivers/staging/iio/imu/adis16400_core.c +++ b/drivers/staging/iio/imu/adis16400_core.c @@ -234,6 +234,8 @@ static ssize_t adis16400_write_frequency(struct device *dev, ret = strict_strtol(buf, 10, &val); if (ret) return ret; + if (val == 0) + return -EINVAL; mutex_lock(&indio_dev->mlock); diff --git a/drivers/staging/iio/meter/ade7753.c b/drivers/staging/iio/meter/ade7753.c index f04ece7..3ccff18 100644 --- a/drivers/staging/iio/meter/ade7753.c +++ b/drivers/staging/iio/meter/ade7753.c @@ -425,6 +425,8 @@ static ssize_t ade7753_write_frequency(struct device *dev, ret = strict_strtol(buf, 10, &val); if (ret) return ret; + if (val == 0) + return -EINVAL; mutex_lock(&indio_dev->mlock); diff --git a/drivers/staging/iio/meter/ade7754.c b/drivers/staging/iio/meter/ade7754.c index 6cee28a..abb1e9c 100644 --- a/drivers/staging/iio/meter/ade7754.c +++ b/drivers/staging/iio/meter/ade7754.c @@ -445,6 +445,8 @@ static ssize_t ade7754_write_frequency(struct device *dev, ret = strict_strtol(buf, 10, &val); if (ret) return ret; + if (val == 0) + return -EINVAL; mutex_lock(&indio_dev->mlock); diff --git a/drivers/staging/iio/meter/ade7759.c b/drivers/staging/iio/meter/ade7759.c index b3f7e0fa9..eb0a2a9 100644 --- a/drivers/staging/iio/meter/ade7759.c +++ b/drivers/staging/iio/meter/ade7759.c @@ -385,6 +385,8 @@ static ssize_t ade7759_write_frequency(struct device *dev, ret = strict_strtol(buf, 10, &val); if (ret) return ret; + if (val == 0) + return -EINVAL; mutex_lock(&indio_dev->mlock); |