[PATCH v5 01/11] spi: imx: terminate RX DMA transaction in case of TX DMA timeout
From: Anton Bondarenko <hidden>
Date: 2015-12-05 16:59:55
Also in:
linux-spi, lkml
Subsystem:
spi subsystem, the rest · Maintainers:
Mark Brown, Linus Torvalds
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 <redacted> --- 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