iio: proximity: vl53l0x-i2c: use stack allocated scan struct

Use a stack allocated struct for the scan data instead of using the
driver state to store the struct. The scan data is not used outside of
the interrupt handler function so the struct does not need to exist
outside of that scope.

Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://patch.msgid.link/20250722-iio-proximity-vl53l0x-i2c-use-stack-allocated-scan-struct-v1-1-42f127a6834f@baylibre.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/proximity/vl53l0x-i2c.c b/drivers/iio/proximity/vl53l0x-i2c.c
index ef4aa7b2835e3c9e177f3e03b24a141ac45c3825..b4d82f24be296c37e9243167b463bf96368e8ec4 100644 (file)
--- a/drivers/iio/proximity/vl53l0x-i2c.c
+++ b/drivers/iio/proximity/vl53l0x-i2c.c
@@ -57,11 +57,6 @@ struct vl53l0x_data {
        struct regulator *vdd_supply;
        struct gpio_desc *reset_gpio;
        struct iio_trigger *trig;
-
-       struct {
-               u16 chan;
-               aligned_s64 timestamp;
-       } scan;
 };
 
 static int vl53l0x_clear_irq(struct vl53l0x_data *data)
@@ -84,6 +79,10 @@ static irqreturn_t vl53l0x_trigger_handler(int irq, void *priv)
        struct vl53l0x_data *data = iio_priv(indio_dev);
        u8 buffer[12];
        int ret;
+       struct {
+               u16 chan;
+               aligned_s64 timestamp;
+       } scan = { };
 
        ret = i2c_smbus_read_i2c_block_data(data->client,
                                        VL_REG_RESULT_RANGE_STATUS,
@@ -93,8 +92,8 @@ static irqreturn_t vl53l0x_trigger_handler(int irq, void *priv)
        else if (ret != 12)
                return -EREMOTEIO;
 
-       data->scan.chan = get_unaligned_be16(&buffer[10]);
-       iio_push_to_buffers_with_ts(indio_dev, &data->scan, sizeof(data->scan),
+       scan.chan = get_unaligned_be16(&buffer[10]);
+       iio_push_to_buffers_with_ts(indio_dev, &scan, sizeof(scan),
                                    iio_get_time_ns(indio_dev));
 
        iio_trigger_notify_done(indio_dev->trig);