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drivers: spi: stm32 ll driver disable the instance after completion

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The spi_stm32_complete() is checking spi flags which are valid when the
intance is still enable: disable afterwards. No more need to disable
the DMA transfer then

Signed-off-by: Francois Ramu <francois.ramu@st.com>
This commit is contained in:
Francois Ramu 2022-01-05 16:02:48 +01:00 • committed by Maureen Helm
commit 0ce796398a
1 changed files with 4 additions and 2 deletions
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6
drivers/spi/spi_ll_stm32.c
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@ -767,15 +767,17 @@ static int transceive_dma(const struct device *dev,
spi_context_update_rx(&data->ctx, 1, dma_len);
}
/* spi complete relies on SPI Status Reg which cannot be disabled */
spi_stm32_complete(dev, ret);
/* disable spi instance after completion */
LL_SPI_Disable(spi);
/* The Config. Reg. on some mcus is write un-protected when SPI is disabled */
LL_SPI_DisableDMAReq_TX(spi);
LL_SPI_DisableDMAReq_RX(spi);
dma_stop(data->dma_rx.dma_dev, data->dma_rx.channel);
dma_stop(data->dma_tx.dma_dev, data->dma_tx.channel);
spi_stm32_complete(dev, ret);
end:
spi_context_release(&data->ctx, ret);