linux-kernel - [PATCH v5 01/11] spi: imx: terminate RX DMA transaction in case of TX DMA timeout

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Message-Id: <1449334629-4715-2-git-send-email-anton.bondarenko.sama@gmail.com>
Date:	Sat,  5 Dec 2015 17:56:59 +0100
From:	Anton Bondarenko <anton.bondarenko.sama@...il.com>
To:	broonie@...nel.org, b38343@...escale.com, s.hauer@...gutronix.de
Cc:	linux-kernel@...r.kernel.org, linux-spi@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	vladimir_zapolskiy@...tor.com, jiada_wang@...tor.com
Subject: [PATCH v5 01/11] spi: imx: terminate RX DMA transaction in case of TX DMA timeout

Not only TX DMA should be terminated, but RX DMA also. It's required
to avoid accidential DMA memory writes from RX DMA channel and properly
terminate transaction.

Signed-off-by: Anton Bondarenko <anton.bondarenko.sama@...il.com>
---
 drivers/spi/spi-imx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index 0e5723a..fb3bcc4 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -958,6 +958,7 @@ static int spi_imx_dma_transfer(struct spi_imx_data *spi_imx,
 			dev_driver_string(&master->dev),
 			dev_name(&master->dev));
 		dmaengine_terminate_all(master->dma_tx);
+		dmaengine_terminate_all(master->dma_rx);
 	} else {
 		timeout = wait_for_completion_timeout(
 				&spi_imx->dma_rx_completion, IMX_DMA_TIMEOUT);
-- 
2.6.3

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