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dmaengine: qcom: bam_dma: use sg_nents_for_dma() helper

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

Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260108105619.3513561-11-andriy.shevchenko@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Andy Shevchenko 2026-01-08 11:50:21 +01:00 committed by Vinod Koul
parent 425f871d7a
commit 107fdf0c4e
1 changed files with 2 additions and 7 deletions
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9
drivers/dma/qcom/bam_dma.c
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@ -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;