Commit d3273e10 authored Jul 24, 2015 by Alex Smith Committed by Vinod Koul Aug 18, 2015

dmaengine: jz4780: Use dma_get_slave_channel when requesting a specific channel

When the DT requests a specific channel to use it is not necesssary
to scan through all DMA channels in the system. Just return the
requested channel using dma_get_slave_channel().

Signed-off-by: Alex Smith <alex.smith@imgtec.com>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Cc: dmaengine@vger.kernel.org
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

parent 839896ef

drivers/dma/dma-jz4780.c

+7 −2

Original line number	Diff line number	Diff line
		@@ -726,10 +726,15 @@ static struct dma_chan jz4780_of_dma_xlate(struct of_phandle_args dma_spec,
		data.channel);
		return NULL;
		}
		}

		jzdma->chan[data.channel].transfer_type = data.transfer_type;

		return dma_get_slave_channel(
		&jzdma->chan[data.channel].vchan.chan);
		} else {
		return dma_request_channel(mask, jz4780_dma_filter_fn, &data);
		}
		}

		static int jz4780_dma_probe(struct platform_device *pdev)
		{