On SDMA initialization return exactly the same error, which is reported by dma_request_slave_channel_reason(), it is a preceding change to defer SPI DMA initialization, if SDMA module is not yet available. Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@xxxxxxxxxx> Signed-off-by: Anton Bondarenko <anton.bondarenko.sama@xxxxxxxxx> --- drivers/spi/spi-imx.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index f556eaa..aaa32c2 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -923,18 +923,20 @@ static int spi_imx_sdma_init(struct device *dev, struct spi_imx_data *spi_imx, spi_imx->wml = spi_imx_get_fifosize(spi_imx) / 2; /* Prepare for TX DMA: */ - master->dma_tx = dma_request_slave_channel(dev, "tx"); - if (!master->dma_tx) { - dev_err(dev, "cannot get the TX DMA channel!\n"); - ret = -EINVAL; + master->dma_tx = dma_request_slave_channel_reason(dev, "tx"); + if (IS_ERR(master->dma_tx)) { + dev_info(dev, "cannot get the TX DMA channel!\n"); + ret = PTR_ERR(master->dma_tx); + master->dma_tx = NULL; goto err; } /* Prepare for RX : */ - master->dma_rx = dma_request_slave_channel(dev, "rx"); - if (!master->dma_rx) { - dev_dbg(dev, "cannot get the DMA channel.\n"); - ret = -EINVAL; + master->dma_rx = dma_request_slave_channel_reason(dev, "rx"); + if (IS_ERR(master->dma_rx)) { + dev_info(dev, "cannot get the DMA channel.\n"); + ret = PTR_ERR(master->dma_rx); + master->dma_rx = NULL; goto err; } -- 2.6.3 -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html