[PATCH 16/28] iio: imu: inv_icm42600: use = { } instead of memset()

David Lechner dlechner at baylibre.com
Wed Jun 11 15:39:08 PDT 2025


Use { } instead of memset() to zero-initialize stack memory to simplify
the code.

Signed-off-by: David Lechner <dlechner at baylibre.com>
---
 drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c | 5 ++---
 drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c  | 5 ++---
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c
index e6cd9dcb0687d19554e63a69dc60f065c58d70ee..dbd315ad3c4d2bd5085f7cd3cdc6de4391b1c896 100644
--- a/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c
@@ -902,7 +902,8 @@ int inv_icm42600_accel_parse_fifo(struct iio_dev *indio_dev)
 	const int8_t *temp;
 	unsigned int odr;
 	int64_t ts_val;
-	struct inv_icm42600_accel_buffer buffer;
+	/* buffer is copied to userspace, zeroing it to avoid any data leak */
+	struct inv_icm42600_accel_buffer buffer = { };
 
 	/* parse all fifo packets */
 	for (i = 0, no = 0; i < st->fifo.count; i += size, ++no) {
@@ -921,8 +922,6 @@ int inv_icm42600_accel_parse_fifo(struct iio_dev *indio_dev)
 			inv_sensors_timestamp_apply_odr(ts, st->fifo.period,
 							st->fifo.nb.total, no);
 
-		/* buffer is copied to userspace, zeroing it to avoid any data leak */
-		memset(&buffer, 0, sizeof(buffer));
 		memcpy(&buffer.accel, accel, sizeof(buffer.accel));
 		/* convert 8 bits FIFO temperature in high resolution format */
 		buffer.temp = temp ? (*temp * 64) : 0;
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c
index b4d7ce1432a4f4d096599877040a89ede0625e0b..4058eca076d8b03a2290535eedffa0a74098d739 100644
--- a/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c
@@ -806,7 +806,8 @@ int inv_icm42600_gyro_parse_fifo(struct iio_dev *indio_dev)
 	const int8_t *temp;
 	unsigned int odr;
 	int64_t ts_val;
-	struct inv_icm42600_gyro_buffer buffer;
+	/* buffer is copied to userspace, zeroing it to avoid any data leak */
+	struct inv_icm42600_gyro_buffer buffer = { };
 
 	/* parse all fifo packets */
 	for (i = 0, no = 0; i < st->fifo.count; i += size, ++no) {
@@ -825,8 +826,6 @@ int inv_icm42600_gyro_parse_fifo(struct iio_dev *indio_dev)
 			inv_sensors_timestamp_apply_odr(ts, st->fifo.period,
 							st->fifo.nb.total, no);
 
-		/* buffer is copied to userspace, zeroing it to avoid any data leak */
-		memset(&buffer, 0, sizeof(buffer));
 		memcpy(&buffer.gyro, gyro, sizeof(buffer.gyro));
 		/* convert 8 bits FIFO temperature in high resolution format */
 		buffer.temp = temp ? (*temp * 64) : 0;

-- 
2.43.0




More information about the linux-arm-kernel mailing list