dmaengine: imx-sdma: Let the core do the device node validation

Let the DMA engine core do the device node validation instead of drivers.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>

2 files changed, 2 insertions, 8 deletions

diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 99d9f431ae2c..ca296f0849ef 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -1934,16 +1934,11 @@ disable_clk_ipg:
 static bool sdma_filter_fn(struct dma_chan *chan, void *fn_param)
 {
         struct sdma_channel *sdmac = to_sdma_chan(chan);
-        struct sdma_engine *sdma = sdmac->sdma;
         struct imx_dma_data *data = fn_param;
 
         if (!imx_dma_is_general_purpose(chan))
                 return false;
 
-        /* return false if it's not the right device */
-        if (sdma->dev->of_node != data->of_node)
-                return false;
-
         sdmac->data = *data;
         chan->private = &sdmac->data;
 
@@ -1971,9 +1966,9 @@ static struct dma_chan *sdma_xlate(struct of_phandle_args *dma_spec,
          * be set to sdmac->event_id1.
          */
         data.dma_request2 = 0;
-        data.of_node = ofdma->of_node;
 
-        return dma_request_channel(mask, sdma_filter_fn, &data);
+        return __dma_request_channel(&mask, sdma_filter_fn, &data,
+                                     ofdma->of_node);
 }
 
 static int sdma_probe(struct platform_device *pdev)
diff --git a/include/linux/platform_data/dma-imx.h b/include/linux/platform_data/dma-imx.h
index 9daea8d42a10..7d964e787299 100644
--- a/include/linux/platform_data/dma-imx.h
+++ b/include/linux/platform_data/dma-imx.h
@@ -55,7 +55,6 @@ struct imx_dma_data {
         int dma_request2; /* secondary DMA request line */
         enum sdma_peripheral_type peripheral_type;
         int priority;
-        struct device_node *of_node;
 };
 
 static inline int imx_dma_is_ipu(struct dma_chan *chan)