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SubjectApplied "spi: tegra114: terminate dma and reset on transfer timeout" to the spi tree
The patch

spi: tegra114: terminate dma and reset on transfer timeout

has been applied to the spi tree at

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tree (usually sometime in the next 24 hours) and sent to Linus during
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From 32bd1a9551cae34e6889afa235c7afdfede9aeac Mon Sep 17 00:00:00 2001
From: Sowjanya Komatineni <>
Date: Tue, 26 Mar 2019 22:56:27 -0700
Subject: [PATCH] spi: tegra114: terminate dma and reset on transfer timeout

Fixes: terminate DMA and perform controller reset on transfer timeout
to clear the FIFO's and errors.

Signed-off-by: Sowjanya Komatineni <>
Signed-off-by: Mark Brown <>
drivers/spi/spi-tegra114.c | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/drivers/spi/spi-tegra114.c b/drivers/spi/spi-tegra114.c
index 876eb2acdef1..a6153b905d1a 100644
--- a/drivers/spi/spi-tegra114.c
+++ b/drivers/spi/spi-tegra114.c
@@ -869,7 +869,16 @@ static int tegra_spi_transfer_one_message(struct spi_master *master,
if (WARN_ON(ret == 0)) {
"spi transfer timeout, err %d\n", ret);
+ if (tspi->is_curr_dma_xfer &&
+ (tspi->cur_direction & DATA_DIR_TX))
+ dmaengine_terminate_all(tspi->tx_dma_chan);
+ if (tspi->is_curr_dma_xfer &&
+ (tspi->cur_direction & DATA_DIR_RX))
+ dmaengine_terminate_all(tspi->rx_dma_chan);
ret = -EIO;
+ reset_control_assert(tspi->rst);
+ udelay(2);
+ reset_control_deassert(tspi->rst);
goto complete_xfer;

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