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Commit 50d4b306 authored by Dan Carpenter's avatar Dan Carpenter Committed by Jonathan Cameron
Browse files

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: default avatarDan Carpenter <dan.carpenter@oracle.com>
Acked-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 95d1c8c7

drivers/staging/iio/adc/ad7192.c

+2 −0
Original line number Diff line number Diff line
@@ -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)) {

drivers/staging/iio/gyro/adis16260_core.c

+2 −0
Original line number Diff line number Diff line
@@ -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)) {

drivers/staging/iio/imu/adis16400_core.c

+2 −0
Original line number Diff line number Diff line
@@ -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);

drivers/staging/iio/meter/ade7753.c

+2 −0
Original line number Diff line number Diff line
@@ -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);

drivers/staging/iio/meter/ade7754.c

+2 −0
Original line number Diff line number Diff line
@@ -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);