[PATCH v2 6/8] dmaengine: mxs-dma: Let the core do the device node validation
From: Baolin Wang <hidden>
Date: 2019-05-20 11:33:02
Also in:
dmaengine, linux-tegra, lkml
Subsystem:
dma generic offload engine subsystem, the rest · Maintainers:
Vinod Koul, Linus Torvalds
Let the DMA engine core do the device node validation instead of drivers. Signed-off-by: Baolin Wang <redacted> --- drivers/dma/mxs-dma.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-)
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, ¶m); + return __dma_request_channel(&mask, mxs_dma_filter_fn, ¶m, + ofdma->of_node); } static int __init mxs_dma_probe(struct platform_device *pdev)
--
1.7.9.5
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