Thread (30 messages) 30 messages, 5 authors, 2019-09-19
STALE2462d REVIEWED: 3 (3M)
Revisions (4)
  1. v2 current
  2. v3 [diff vs current]
  3. v4 [diff vs current]
  4. v5 [diff vs current]

[PATCH v2 3/3] dmaengine: imx-sdma: drop redundant variable

From: Philipp Puschmann <hidden>
Date: 2019-09-19 10:23:53
Also in: lkml
Subsystem: dma generic offload engine subsystem, the rest · Maintainers: Vinod Koul, Linus Torvalds

In sdma_prep_dma_cyclic buf is redundant. Drop it.

Signed-off-by: Philipp Puschmann <redacted>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
---

Changelog v2:
 - add Reviewed-by tag

 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 a32b5962630e..17961451941a 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


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