linux-kernel - [PATCH 1/5] dmaengine: fsl-edma: remove 'slave_id' from fsl_edma

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Message-Id: <20240227-8ulp_edma-v1-1-7fcfe1e265c2@nxp.com>
Date: Tue, 27 Feb 2024 12:21:53 -0500
From: Frank Li <Frank.Li@....com>
To: Vinod Koul <vkoul@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
 Conor Dooley <conor+dt@...nel.org>, Peng Fan <peng.fan@....com>
Cc: imx@...ts.linux.dev, dmaengine@...r.kernel.org, 
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, 
 Frank Li <Frank.Li@....com>
Subject: [PATCH 1/5] dmaengine: fsl-edma: remove 'slave_id' from
 fsl_edma_chan

The 'slave_id' field is redundant as it duplicates the functionality of
'srcid'. Remove 'slave_id' from fsl_edma_chan to eliminate redundancy.

Signed-off-by: Frank Li <Frank.Li@....com>
---
 drivers/dma/fsl-edma-common.h |  1 -
 drivers/dma/fsl-edma-main.c   | 10 +++++-----
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/dma/fsl-edma-common.h b/drivers/dma/fsl-edma-common.h
index 7bf0aba471a8c..4cf1de9f0e512 100644
--- a/drivers/dma/fsl-edma-common.h
+++ b/drivers/dma/fsl-edma-common.h
@@ -151,7 +151,6 @@ struct fsl_edma_chan {
 	enum dma_status			status;
 	enum fsl_edma_pm_state		pm_state;
 	bool				idle;
-	u32				slave_id;
 	struct fsl_edma_engine		*edma;
 	struct fsl_edma_desc		*edesc;
 	struct dma_slave_config		cfg;
diff --git a/drivers/dma/fsl-edma-main.c b/drivers/dma/fsl-edma-main.c
index 402f0058a180c..0a6e0c4040274 100644
--- a/drivers/dma/fsl-edma-main.c
+++ b/drivers/dma/fsl-edma-main.c
@@ -114,8 +114,8 @@ static struct dma_chan *fsl_edma_xlate(struct of_phandle_args *dma_spec,
 			if (chan) {
 				chan->device->privatecnt++;
 				fsl_chan = to_fsl_edma_chan(chan);
-				fsl_chan->slave_id = dma_spec->args[1];
-				fsl_edma_chan_mux(fsl_chan, fsl_chan->slave_id,
+				fsl_chan->srcid = dma_spec->args[1];
+				fsl_edma_chan_mux(fsl_chan, fsl_chan->srcid,
 						true);
 				mutex_unlock(&fsl_edma->fsl_edma_mutex);
 				return chan;
@@ -540,7 +540,7 @@ static int fsl_edma_probe(struct platform_device *pdev)
 
 		fsl_chan->edma = fsl_edma;
 		fsl_chan->pm_state = RUNNING;
-		fsl_chan->slave_id = 0;
+		fsl_chan->srcid = 0;
 		fsl_chan->idle = true;
 		fsl_chan->dma_dir = DMA_NONE;
 		fsl_chan->vchan.desc_free = fsl_edma_free_desc;
@@ -682,8 +682,8 @@ static int fsl_edma_resume_early(struct device *dev)
 			continue;
 		fsl_chan->pm_state = RUNNING;
 		edma_write_tcdreg(fsl_chan, 0, csr);
-		if (fsl_chan->slave_id != 0)
-			fsl_edma_chan_mux(fsl_chan, fsl_chan->slave_id, true);
+		if (fsl_chan->srcid != 0)
+			fsl_edma_chan_mux(fsl_chan, fsl_chan->srcid, true);
 	}
 
 	if (!(fsl_edma->drvdata->flags & FSL_EDMA_DRV_SPLIT_REG))

-- 
2.34.1