Commit d7785661 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Vinod Koul
Browse files

dmaengine: sa11x0: use sg_nents_for_dma() helper 



Instead of open coded variant let's use recently introduced helper.

Reviewed-by: default avatarBjorn Andersson <andersson@kernel.org>
Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260108105619.3513561-12-andriy.shevchenko@linux.intel.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 107fdf0c

drivers/dma/sa11x0-dma.c

+2 −4
Original line number Diff line number Diff line
@@ -526,7 +526,7 @@ static struct dma_async_tx_descriptor *sa11x0_dma_prep_slave_sg( 
	struct sa11x0_dma_chan *c = to_sa11x0_dma_chan(chan);

	struct sa11x0_dma_desc *txd;

	struct scatterlist *sgent;

	unsigned i, j = sglen;

	unsigned int i, j;

	size_t size = 0;



	/* SA11x0 channels can only operate in their native direction */
@@ -542,10 +542,7 @@ static struct dma_async_tx_descriptor *sa11x0_dma_prep_slave_sg( 


	for_each_sg(sg, sgent, sglen, i) {

		dma_addr_t addr = sg_dma_address(sgent);

		unsigned int len = sg_dma_len(sgent);



		if (len > DMA_MAX_SIZE)

			j += DIV_ROUND_UP(len, DMA_MAX_SIZE & ~DMA_ALIGN) - 1;

		if (addr & DMA_ALIGN) {

			dev_dbg(chan->device->dev, "vchan %p: bad buffer alignment: %pad\n",

				&c->vc, &addr);
@@ -553,6 +550,7 @@ static struct dma_async_tx_descriptor *sa11x0_dma_prep_slave_sg( 
		}

	}



	j = sg_nents_for_dma(sg, sglen, DMA_MAX_SIZE & ~DMA_ALIGN);

	txd = kzalloc(struct_size(txd, sg, j), GFP_ATOMIC);

	if (!txd) {

		dev_dbg(chan->device->dev, "vchan %p: kzalloc failed\n", &c->vc);