Commit 107fdf0c authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Vinod Koul
Browse files

dmaengine: qcom: bam_dma: 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/20260108105619.3513561-11-andriy.shevchenko@linux.intel.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 425f871d

drivers/dma/qcom/bam_dma.c

+2 −7
Original line number Diff line number Diff line
@@ -653,22 +653,17 @@ static struct dma_async_tx_descriptor *bam_prep_slave_sg(struct dma_chan *chan, 
	struct scatterlist *sg;

	u32 i;

	struct bam_desc_hw *desc;

	unsigned int num_alloc = 0;



	unsigned int num_alloc;



	if (!is_slave_direction(direction)) {

		dev_err(bdev->dev, "invalid dma direction\n");

		return NULL;

	}



	/* calculate number of required entries */

	for_each_sg(sgl, sg, sg_len, i)

		num_alloc += DIV_ROUND_UP(sg_dma_len(sg), BAM_FIFO_SIZE);



	/* allocate enough room to accommodate the number of entries */

	num_alloc = sg_nents_for_dma(sgl, sg_len, BAM_FIFO_SIZE);

	async_desc = kzalloc(struct_size(async_desc, desc, num_alloc),

			     GFP_NOWAIT);



	if (!async_desc)

		return NULL;