iio: imu: inv_icm42600: use = { } instead of memset()

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

Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20250611-iio-zero-init-stack-with-instead-of-memset-v1-16-ebb2d0a24302@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

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 (file)
--- 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 (file)
--- 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;