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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>
This commit is contained in:
Marek Vasut 2012-10-14 04:32:56 +02:00 committed by Mark Brown
parent d856f1eb56
commit 44968466cf
1 changed files with 1 additions and 0 deletions
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1
drivers/spi/spi-mxs.c
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@ -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;
}