spi: mxs: Terminate DMA in case of DMA timeout

In case the SPI DMA times out, the DMA might still be in some kind of
inconsistent state. Issue dmaengine_terminate_all() on the particular
channel to kill off all operations before continuing.

Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/drivers/spi/spi-mxs.c b/drivers/spi/spi-mxs.c
index 5a63bcd..86dd04d 100644 (file)
--- a/drivers/spi/spi-mxs.c
+++ b/drivers/spi/spi-mxs.c
@@ -323,6 +323,7 @@ static int mxs_spi_txrx_dma(struct mxs_spi *spi, int cs,
        if (!ret) {
                dev_err(ssp->dev, "DMA transfer timeout\n");
                ret = -ETIMEDOUT;
+               dmaengine_terminate_all(ssp->dmach);
                goto err_vmalloc;
        }