diff options
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-imx.c | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index 17a90dcab328..c12306099d24 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -848,10 +848,11 @@ 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)) { + ret = PTR_ERR(master->dma_tx); + dev_dbg(dev, "can't get the TX DMA channel, error %d!\n", ret); + master->dma_tx = NULL; goto err; } @@ -866,10 +867,11 @@ static int spi_imx_sdma_init(struct device *dev, struct spi_imx_data *spi_imx, } /* 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)) { + ret = PTR_ERR(master->dma_rx); + dev_dbg(dev, "can't get the RX DMA channel, error %d\n", ret); + master->dma_rx = NULL; goto err; } @@ -1218,9 +1220,12 @@ static int spi_imx_probe(struct platform_device *pdev) * Only validated on i.mx6 now, can remove the constrain if validated on * other chips. */ - if (is_imx51_ecspi(spi_imx) && - spi_imx_sdma_init(&pdev->dev, spi_imx, master, res)) - dev_err(&pdev->dev, "dma setup error,use pio instead\n"); + if (is_imx51_ecspi(spi_imx)) { + ret = spi_imx_sdma_init(&pdev->dev, spi_imx, master, res); + if (ret < 0) + dev_err(&pdev->dev, "dma setup error %d, use pio\n", + ret); + } spi_imx->devtype_data->reset(spi_imx); |