[PATCH] iio: common: scmi_iio: use kcalloc() instead of kzalloc()

From: Qianfeng Rong
Date: Tue Aug 19 2025 - 04:56:33 EST


Replace calls of devm_kzalloc() with devm_kcalloc() in scmi_alloc_iiodev()
and scmi_iio_set_sampling_freq_avail() for safer memory allocation with
built-in overflow protection.

Signed-off-by: Qianfeng Rong <rongqianfeng@xxxxxxxx>
---
drivers/iio/common/scmi_sensors/scmi_iio.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/iio/common/scmi_sensors/scmi_iio.c b/drivers/iio/common/scmi_sensors/scmi_iio.c
index da516c46e057..19798ea9de3e 100644
--- a/drivers/iio/common/scmi_sensors/scmi_iio.c
+++ b/drivers/iio/common/scmi_sensors/scmi_iio.c
@@ -521,9 +521,9 @@ static int scmi_iio_set_sampling_freq_avail(struct iio_dev *iio_dev)
int i;

sensor->freq_avail =
- devm_kzalloc(&iio_dev->dev,
- sizeof(*sensor->freq_avail) *
- (sensor->sensor_info->intervals.count * 2),
+ devm_kcalloc(&iio_dev->dev,
+ sensor->sensor_info->intervals.count * 2,
+ sizeof(*sensor->freq_avail),
GFP_KERNEL);
if (!sensor->freq_avail)
return -ENOMEM;
@@ -597,8 +597,8 @@ scmi_alloc_iiodev(struct scmi_device *sdev,
iiodev->info = &scmi_iio_info;

iio_channels =
- devm_kzalloc(dev,
- sizeof(*iio_channels) * (iiodev->num_channels),
+ devm_kcalloc(dev, iiodev->num_channels,
+ sizeof(*iio_channels),
GFP_KERNEL);
if (!iio_channels)
return ERR_PTR(-ENOMEM);
--
2.34.1