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[v2,6/8] dmaengine: mxs-dma: Let the core do the device node validation

Message ID 15bd5303ecf61f3a3aacd0b078d13f042dea73c6.1558351667.git.baolin.wang@linaro.org
State New
Headers show
Series Add matching device node validation in DMA engine core | expand

Commit Message

(Exiting) Baolin Wang May 20, 2019, 11:32 a.m. UTC 
Let the DMA engine core do the device node validation instead of drivers.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>

---
 drivers/dma/mxs-dma.c |    8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

-- 
1.7.9.5
diff mbox series

Patch

diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c
index 22cc7f6..8ce5e79 100644
--- a/drivers/dma/mxs-dma.c
+++ b/drivers/dma/mxs-dma.c
@@ -716,7 +716,6 @@  static int __init mxs_dma_init(struct mxs_dma_engine *mxs_dma)
 }
 
 struct mxs_dma_filter_param {
-	struct device_node *of_node;
 	unsigned int chan_id;
 };
 
@@ -727,9 +726,6 @@  static bool mxs_dma_filter_fn(struct dma_chan *chan, void *fn_param)
 	struct mxs_dma_engine *mxs_dma = mxs_chan->mxs_dma;
 	int chan_irq;
 
-	if (mxs_dma->dma_device.dev->of_node != param->of_node)
-		return false;
-
 	if (chan->chan_id != param->chan_id)
 		return false;
 
@@ -752,13 +748,13 @@  static struct dma_chan *mxs_dma_xlate(struct of_phandle_args *dma_spec,
 	if (dma_spec->args_count != 1)
 		return NULL;
 
-	param.of_node = ofdma->of_node;
 	param.chan_id = dma_spec->args[0];
 
 	if (param.chan_id >= mxs_dma->nr_channels)
 		return NULL;
 
-	return dma_request_channel(mask, mxs_dma_filter_fn, &param);
+	return __dma_request_channel(&mask, mxs_dma_filter_fn, &param,
+				     ofdma->of_node);
 }
 
 static int __init mxs_dma_probe(struct platform_device *pdev)