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drivers: spi: fix 16 bit spi dma transfers for the STM32 driver

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Calculate the correct dma segment length for STM32 16 bit spi dma transfers
Fixes zephyrproject-rtos#52563

Signed-off-by: Rami Saad <rami.saad@morgansolar.com>
This commit is contained in:
Rami Saad 2022-11-25 16:29:25 -05:00 • committed by Carles Cufí
commit 1d8681965c
1 changed files with 2 additions and 2 deletions
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4
drivers/spi/spi_ll_stm32.c
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@ -206,14 +206,14 @@ static int spi_dma_move_buffers(const struct device *dev, size_t len)
int ret;
size_t dma_segment_len;
dma_segment_len = len / data->dma_rx.dma_cfg.dest_data_size;
dma_segment_len = len * data->dma_rx.dma_cfg.dest_data_size;
ret = spi_stm32_dma_rx_load(dev, data->ctx.rx_buf, dma_segment_len);
if (ret != 0) {
return ret;
}
dma_segment_len = len / data->dma_tx.dma_cfg.source_data_size;
dma_segment_len = len * data->dma_tx.dma_cfg.source_data_size;
ret = spi_stm32_dma_tx_load(dev, data->ctx.tx_buf, dma_segment_len);
return ret;