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Commit f809ccb5 authored by Girish Mahadevan's avatar Girish Mahadevan
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spi: spi-geni-qcom: Remove per transaction dmaengine pause and resume 



Don't make a call to pause and resume the DMA channels as these calls are
expensive and can add to transaction times and these calls aren't needed
for the transfers to succeed.

Change-Id: I63aff4c8104e4a9ab63fbf2b5275db7462b5c886
Signed-off-by: default avatarGirish Mahadevan <girishm@codeaurora.org>
parent af4ea937

drivers/spi/spi-geni-qcom.c

+1 −4
Original line number Diff line number Diff line
@@ -726,7 +726,6 @@ static int spi_geni_prepare_message(struct spi_master *spi, 
		memset(mas->gsi, 0,

				(sizeof(struct spi_geni_gsi) * NUM_SPI_XFER));

		geni_se_select_mode(mas->base, GSI_DMA);

		dmaengine_resume(mas->tx);

		ret = spi_geni_map_buf(mas, spi_msg);

	} else {

		dev_err(mas->dev, "%s: Couldn't select mode %d", __func__,
@@ -743,10 +742,8 @@ static int spi_geni_unprepare_message(struct spi_master *spi_mas, 


	mas->cur_speed_hz = 0;

	mas->cur_word_len = 0;

	if (mas->cur_xfer_mode == GSI_DMA) {

		dmaengine_pause(mas->tx);

	if (mas->cur_xfer_mode == GSI_DMA)

		spi_geni_unmap_buf(mas, spi_msg);

	}

	return 0;

}