diff mbox

[v1,09/10] dmaengine: zx296702_dma: use sg_nents_for_dma() helper

Message ID 20161021173535.100245-9-andriy.shevchenko@linux.intel.com (mailing list archive)
State Changes Requested
Headers show

Commit Message

Andy Shevchenko Oct. 21, 2016, 5:35 p.m. UTC 
Instead of open coded variant let's use recently introduced helper.

Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
---
 drivers/dma/zx296702_dma.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)
diff mbox

Patch

diff --git a/drivers/dma/zx296702_dma.c b/drivers/dma/zx296702_dma.c
index 245d759..65479f0 100644
--- a/drivers/dma/zx296702_dma.c
+++ b/drivers/dma/zx296702_dma.c
@@ -554,7 +554,7 @@  static struct dma_async_tx_descriptor *zx_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)
 		return NULL;
@@ -562,12 +562,7 @@  static struct dma_async_tx_descriptor *zx_dma_prep_slave_sg(
 	if (zx_pre_config(c, dir))
 		return NULL;
 
-	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 = zx_alloc_desc_resource(num, chan);
 	if (!ds)
 		return NULL;