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dmaengine: xilinx: Add empty device_config function

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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: Marek 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: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Marek Vasut 2021-08-04 21:51:40 +02:00 committed by Vinod Koul
parent d6ff82cc1b
commit 4153a7f644
1 changed files with 12 additions and 0 deletions
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12
drivers/dma/xilinx/xilinx_dma.c
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@ -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;