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List: dmaengine
Subject: [PATCH v1 05/10] dmaengine: k3dma: use sg_nents_for_dma() helper
From: Andy Shevchenko <andriy.shevchenko () linux ! intel ! com>
Date: 2016-10-21 17:35:30
Message-ID: 20161021173535.100245-5-andriy.shevchenko () linux ! intel ! com
[Download RAW message or body]
Instead of open coded variant let's use recently introduced helper.
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
---
drivers/dma/k3dma.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/drivers/dma/k3dma.c b/drivers/dma/k3dma.c
index aabcb79..17ce6a9 100644
--- a/drivers/dma/k3dma.c
+++ b/drivers/dma/k3dma.c
@@ -526,18 +526,14 @@ static struct dma_async_tx_descriptor *k3_dma_prep_slave_sg(
size_t len, avail, total = 0;
struct scatterlist *sg;
dma_addr_t addr, src = 0, dst = 0;
- int num = sglen, i;
+ int num, i;
if (sgl == NULL)
return NULL;
c->cyclic = 0;
- for_each_sg(sgl, sg, sglen, i) {
- avail = sg_dma_len(sg);
- if (avail > DMA_MAX_SIZE)
- num += DIV_ROUND_UP(avail, DMA_MAX_SIZE) - 1;
- }
+ num = sg_nents_for_dma(sgl, sglen, DMA_MAX_SIZE);
ds = k3_dma_alloc_desc_resource(num, chan);
if (!ds)
--
2.9.3
--
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