diff mbox

[v1,06/10] dmaengine: pxa-dma: use sg_nents_for_dma() helper

Message ID 20161021173535.100245-6-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/pxa_dma.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)
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Patch

diff --git a/drivers/dma/pxa_dma.c b/drivers/dma/pxa_dma.c
index b53fb61..24a6e6f 100644
--- a/drivers/dma/pxa_dma.c
+++ b/drivers/dma/pxa_dma.c
@@ -1023,7 +1023,7 @@  pxad_prep_slave_sg(struct dma_chan *dchan, struct scatterlist *sgl,
 	struct scatterlist *sg;
 	dma_addr_t dma;
 	u32 dcmd, dsadr = 0, dtadr = 0;
-	unsigned int nb_desc = 0, i, j = 0;
+	unsigned int nb_desc, i, j = 0;
 
 	if ((sgl == NULL) || (sg_len == 0))
 		return NULL;
@@ -1032,8 +1032,7 @@  pxad_prep_slave_sg(struct dma_chan *dchan, struct scatterlist *sgl,
 	dev_dbg(&chan->vc.chan.dev->device,
 		"%s(): dir=%d flags=%lx\n", __func__, dir, flags);
 
-	for_each_sg(sgl, sg, sg_len, i)
-		nb_desc += DIV_ROUND_UP(sg_dma_len(sg), PDMA_MAX_DESC_BYTES);
+	nb_desc = sg_nents_for_dma(sgl, sg_len, PDMA_MAX_DESC_BYTES);
 	sw_desc = pxad_alloc_desc(chan, nb_desc + 1);
 	if (!sw_desc)
 		return NULL;