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dmaengine: sa11x0: 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/20260108105619.3513561-12-andriy.shevchenko@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Andy Shevchenko 2026-01-08 11:50:22 +01:00 • committed by Vinod Koul
parent 107fdf0c4e
commit d778566101
1 changed files with 2 additions and 4 deletions
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6
drivers/dma/sa11x0-dma.c
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@ -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);