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spi: tegra: slink: do not prepare dma transfer with DMA_CTRL_ACK flag 

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 <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Laxman Dewangan 2012-11-23 14:52:39 +05:30 committed by Mark Brown
parent 8179bb2655
commit faa98f7ea6
1 changed files with 2 additions and 2 deletions
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4
drivers/spi/spi-tegra20-slink.c
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@ -467,7 +467,7 @@ 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;
@ -486,7 +486,7 @@ 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;