Spi starts transfer using dma with DMA_CTRL_ACK which is not require becasue spi driver does not use completed dma_desc after transfer done and so it does not ack the dma descriptor. Removing the DMA_CTRL_ACK flag to avoid memory leak in dma driver.
Signed-off-by: Laxman Dewangan <[email protected]> --- drivers/spi/spi-tegra20-slink.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-tegra20-slink.c b/drivers/spi/spi-tegra20-slink.c index 7882b50..5b4c8c8 100644 --- a/drivers/spi/spi-tegra20-slink.c +++ b/drivers/spi/spi-tegra20-slink.c @@ -473,7 +473,7 @@ static int tegra_slink_start_tx_dma(struct tegra_slink_data *tspi, int len) INIT_COMPLETION(tspi->tx_dma_complete); tspi->tx_dma_desc = dmaengine_prep_slave_single(tspi->tx_dma_chan, tspi->tx_dma_phys, len, DMA_MEM_TO_DEV, - DMA_PREP_INTERRUPT | DMA_CTRL_ACK); + DMA_PREP_INTERRUPT); if (!tspi->tx_dma_desc) { dev_err(tspi->dev, "Not able to get desc for Tx\n"); return -EIO; @@ -492,7 +492,7 @@ static int tegra_slink_start_rx_dma(struct tegra_slink_data *tspi, int len) INIT_COMPLETION(tspi->rx_dma_complete); tspi->rx_dma_desc = dmaengine_prep_slave_single(tspi->rx_dma_chan, tspi->rx_dma_phys, len, DMA_DEV_TO_MEM, - DMA_PREP_INTERRUPT | DMA_CTRL_ACK); + DMA_PREP_INTERRUPT); if (!tspi->rx_dma_desc) { dev_err(tspi->dev, "Not able to get desc for Rx\n"); return -EIO; -- 1.7.1.1 -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
