Commit 4153a7f6 authored by Marek Vasut's avatar Marek Vasut Committed by Vinod Koul
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dmaengine: xilinx: Add empty device_config function 



Various DMA users call the dmaengine_slave_config() and expect it to
succeed, but that can only succeed if .device_config is implemented.
Add empty device_config function rather than patching all the places
which use dmaengine_slave_config().

Signed-off-by: default avatarMarek Vasut <marex@denx.de>
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Kedareswara rao Appana <appana.durga.rao@xilinx.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20210804195140.61396-1-marex@denx.de


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent d6ff82cc

drivers/dma/xilinx/xilinx_dma.c

+12 −0
Original line number Diff line number Diff line
@@ -1657,6 +1657,17 @@ static void xilinx_dma_issue_pending(struct dma_chan *dchan) 
	spin_unlock_irqrestore(&chan->lock, flags);

}



/**

 * xilinx_dma_device_config - Configure the DMA channel

 * @dchan: DMA channel

 * @config: channel configuration

 */

static int xilinx_dma_device_config(struct dma_chan *dchan,

				    struct dma_slave_config *config)

{

	return 0;

}



/**

 * xilinx_dma_complete_descriptor - Mark the active descriptor as complete

 * @chan : xilinx DMA channel
@@ -3095,6 +3106,7 @@ static int xilinx_dma_probe(struct platform_device *pdev) 
	xdev->common.device_synchronize = xilinx_dma_synchronize;

	xdev->common.device_tx_status = xilinx_dma_tx_status;

	xdev->common.device_issue_pending = xilinx_dma_issue_pending;

	xdev->common.device_config = xilinx_dma_device_config;

	if (xdev->dma_config->dmatype == XDMA_TYPE_AXIDMA) {

		dma_cap_set(DMA_CYCLIC, xdev->common.cap_mask);

		xdev->common.device_prep_slave_sg = xilinx_dma_prep_slave_sg;