spi: qup: Place the QUP in run mode before DMA (ce00bab3) · Commits · 戴 / test

drivers/spi/spi-qup.c

+15 −0

Original line number	Diff line number	Diff line
		@@ -343,6 +343,14 @@ static int spi_qup_do_dma(struct spi_master master, struct spi_transfer xfer,
		else if (xfer->tx_buf)
		tx_done = spi_qup_dma_done;

		/* before issuing the descriptors, set the QUP to run */
		ret = spi_qup_set_state(qup, QUP_STATE_RUN);
		if (ret) {
		dev_warn(qup->dev, "%s(%d): cannot set RUN state\n",
		__func__, __LINE__);
		return ret;
		}

		if (xfer->rx_buf) {
		ret = spi_qup_prep_sg(master, xfer, DMA_DEV_TO_MEM, rx_done);
		if (ret)
		@@ -385,6 +393,13 @@ static int spi_qup_do_pio(struct spi_master master, struct spi_transfer xfer,

		spi_qup_fifo_write(qup, xfer);

		ret = spi_qup_set_state(qup, QUP_STATE_RUN);
		if (ret) {
		dev_warn(qup->dev, "%s(%d): cannot set RUN state\n",
		__func__, __LINE__);
		return ret;
		}

		if (!wait_for_completion_timeout(&qup->done, timeout))
		return -ETIMEDOUT;