diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c index b6b8a0bb5b2f9bc888c3f35a4f1e82d1048a7972..795fd191faa7089835bad3c3d6398b7691d4e94d 100644 --- a/drivers/spi/spi-rockchip.c +++ b/drivers/spi/spi-rockchip.c @@ -730,8 +730,14 @@ static int rockchip_spi_probe(struct platform_device *pdev) master->handle_err = rockchip_spi_handle_err; rs->dma_tx.ch = dma_request_slave_channel(rs->dev, "tx"); - if (!rs->dma_tx.ch) + if (IS_ERR_OR_NULL(rs->dma_tx.ch)) { + /* Check tx to see if we need defer probing driver */ + if (PTR_ERR(rs->dma_tx.ch) == -EPROBE_DEFER) { + ret = -EPROBE_DEFER; + goto err_get_fifo_len; + } dev_warn(rs->dev, "Failed to request TX DMA channel\n"); + } rs->dma_rx.ch = dma_request_slave_channel(rs->dev, "rx"); if (!rs->dma_rx.ch) {