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Date: Tue, 7 May 2019 14:09:41 +0800 From: Baolin Wang <baolin.wang@...aro.org> To: dan.j.williams@...el.com, vkoul@...nel.org Cc: thierry.reding@...il.com, jonathanh@...dia.com, linux-tegra@...r.kernel.org, shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com, linux-imx@....com, Zubair.Kakakhel@...tec.com, wsa+renesas@...g-engineering.com, jroedel@...e.de, vincent.guittot@...aro.org, baolin.wang@...aro.org, dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org Subject: [PATCH 4/8] dmaengine: dma-jz4780: 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@...aro.org> --- drivers/dma/dma-jz4780.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/dma/dma-jz4780.c b/drivers/dma/dma-jz4780.c index 9ce0a38..7e1d381 100644 --- a/drivers/dma/dma-jz4780.c +++ b/drivers/dma/dma-jz4780.c @@ -160,7 +160,6 @@ struct jz4780_dma_dev { }; struct jz4780_dma_filter_data { - struct device_node *of_node; uint32_t transfer_type; int channel; }; @@ -765,8 +764,6 @@ static bool jz4780_dma_filter_fn(struct dma_chan *chan, void *param) struct jz4780_dma_dev *jzdma = jz4780_dma_chan_parent(jzchan); struct jz4780_dma_filter_data *data = param; - if (jzdma->dma_device.dev->of_node != data->of_node) - return false; if (data->channel > -1) { if (data->channel != jzchan->id) @@ -790,7 +787,6 @@ static struct dma_chan *jz4780_of_dma_xlate(struct of_phandle_args *dma_spec, if (dma_spec->args_count != 2) return NULL; - data.of_node = ofdma->of_node; data.transfer_type = dma_spec->args[0]; data.channel = dma_spec->args[1]; @@ -815,7 +811,8 @@ static struct dma_chan *jz4780_of_dma_xlate(struct of_phandle_args *dma_spec, return dma_get_slave_channel( &jzdma->chan[data.channel].vchan.chan); } else { - return dma_request_channel(mask, jz4780_dma_filter_fn, &data); + return __dma_request_channel(&mask, jz4780_dma_filter_fn, &data, + ofdma->of_node); } } -- 1.7.9.5
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