linux-kernel - [PATCH 4/4] dmaengine: imx-sdma: drop redundant variable

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Date:   Wed, 11 Sep 2019 16:49:43 +0200
From:   Philipp Puschmann <philipp.puschmann@...ix.com>
To:     linux-kernel@...r.kernel.org
Cc:     vkoul@...nel.org, dan.j.williams@...el.com, shawnguo@...nel.org,
        s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
        linux-imx@....com, gregkh@...uxfoundation.org, jslaby@...e.com,
        dmaengine@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-serial@...r.kernel.org,
        Philipp Puschmann <philipp.puschmann@...ix.com>
Subject: [PATCH 4/4] dmaengine: imx-sdma: drop redundant variable

In sdma_prep_dma_cyclic buf is redundant. Drop it.

Signed-off-by: Philipp Puschmann <philipp.puschmann@...ix.com>
---
 drivers/dma/imx-sdma.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 6a5a84504858..5b6beeee9f0e 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -1544,7 +1544,7 @@ static struct dma_async_tx_descriptor *sdma_prep_dma_cyclic(
 	struct sdma_engine *sdma = sdmac->sdma;
 	int num_periods = buf_len / period_len;
 	int channel = sdmac->channel;
-	int i = 0, buf = 0;
+	int i;
 	struct sdma_desc *desc;
 
 	dev_dbg(sdma->dev, "%s channel: %d\n", __func__, channel);
@@ -1565,7 +1565,7 @@ static struct dma_async_tx_descriptor *sdma_prep_dma_cyclic(
 		goto err_bd_out;
 	}
 
-	while (buf < buf_len) {
+	for (i = 0; i < num_periods; i++) {
 		struct sdma_buffer_descriptor *bd = &desc->bd[i];
 		int param;
 
@@ -1592,9 +1592,6 @@ static struct dma_async_tx_descriptor *sdma_prep_dma_cyclic(
 		bd->mode.status = param;
 
 		dma_addr += period_len;
-		buf += period_len;
-
-		i++;
 	}
 
 	return vchan_tx_prep(&sdmac->vc, &desc->vd, flags);
-- 
2.23.0