drivers/sensor: lis2dux12: fix uninitialized variable fifo_mode

Set fifo_mode structure to zero and initialize it properly according
to what interrupt event the user has selected.

Fixes: CID 529871
Fixes: CID 529865

Signed-off-by: Armando Visconti <armando.visconti@st.com>

drivers/sensor/st/lis2dux12/lis2dux12_api.c

@@ -151,7 +151,7 @@ static void st_lis2dux12_stream_config_fifo(const struct device *dev,
 	const struct lis2dux12_config *config = dev->config;
 	stmdev_ctx_t *ctx = (stmdev_ctx_t *)&config->ctx;
 	lis2dux12_pin_int_route_t pin_int = { 0 };
-	lis2dux12_fifo_mode_t fifo_mode;
+	lis2dux12_fifo_mode_t fifo_mode = { 0 };
 
 	/* disable FIFO as first thing */
 	fifo_mode.store = LIS2DUX12_FIFO_1X;
@@ -168,6 +168,12 @@ static void st_lis2dux12_stream_config_fifo(const struct device *dev,
 		pin_int.fifo_th = (trig_cfg.int_fifo_th) ? PROPERTY_ENABLE : PROPERTY_DISABLE;
 		pin_int.fifo_full = (trig_cfg.int_fifo_full) ? PROPERTY_ENABLE : PROPERTY_DISABLE;
 
+		if (pin_int.fifo_th) {
+			fifo_mode.fifo_event = LIS2DUX12_FIFO_EV_WTM;
+		} else if (pin_int.fifo_full) {
+			fifo_mode.fifo_event = LIS2DUX12_FIFO_EV_FULL;
+		}
+
 		switch (config->fifo_mode_sel) {
 		case 0:
 			fifo_mode.store = LIS2DUX12_FIFO_1X;

drivers/sensor/st/lis2dux12/lis2duxs12_api.c

@@ -151,7 +151,7 @@ static void st_lis2duxs12_stream_config_fifo(const struct device *dev,
 	const struct lis2dux12_config *config = dev->config;
 	stmdev_ctx_t *ctx = (stmdev_ctx_t *)&config->ctx;
 	lis2duxs12_pin_int_route_t pin_int = { 0 };
-	lis2duxs12_fifo_mode_t fifo_mode;
+	lis2duxs12_fifo_mode_t fifo_mode = { 0 };
 
 	/* disable FIFO as first thing */
 	fifo_mode.store = LIS2DUXS12_FIFO_1X;
@@ -168,6 +168,12 @@ static void st_lis2duxs12_stream_config_fifo(const struct device *dev,
 		pin_int.fifo_th = (trig_cfg.int_fifo_th) ? PROPERTY_ENABLE : PROPERTY_DISABLE;
 		pin_int.fifo_full = (trig_cfg.int_fifo_full) ? PROPERTY_ENABLE : PROPERTY_DISABLE;
 
+		if (pin_int.fifo_th) {
+			fifo_mode.fifo_event = LIS2DUXS12_FIFO_EV_WTM;
+		} else if (pin_int.fifo_full) {
+			fifo_mode.fifo_event = LIS2DUXS12_FIFO_EV_FULL;
+		}
+
 		switch (config->fifo_mode_sel) {
 		case 0:
 			fifo_mode.store = LIS2DUXS12_FIFO_1X;