diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c
index e84babf43385..588c69e175f5 100644
--- a/drivers/iio/adc/stm32-adc.c
+++ b/drivers/iio/adc/stm32-adc.c
@@ -2470,7 +2470,7 @@ static int stm32_adc_chan_fw_init(struct iio_dev *indio_dev, bool timestamping)
 static int stm32_adc_dma_request(struct device *dev, struct iio_dev *indio_dev)
 {
 	struct stm32_adc *adc = iio_priv(indio_dev);
-	struct dma_slave_config config;
+	struct dma_slave_config config = { };
 	int ret;
 
 	adc->dma_chan = dma_request_chan(dev, "rx");
@@ -2494,7 +2494,6 @@ static int stm32_adc_dma_request(struct device *dev, struct iio_dev *indio_dev)
 	}
 
 	/* Configure DMA channel to read data register */
-	memset(&config, 0, sizeof(config));
 	config.src_addr = (dma_addr_t)adc->common->phys_base;
 	config.src_addr += adc->offset + adc->cfg->regs->dr;
 	config.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;