[PATCH v5 06/13] dmaengine: k3dma: use sg_nents_for_dma() helper
From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: 2026-01-08 10:56:36
Also in:
dmaengine, linux-arm-msm, lkml
Subsystem:
dma generic offload engine subsystem, the rest · Maintainers:
Vinod Koul, Linus Torvalds
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> --- drivers/dma/k3dma.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/drivers/dma/k3dma.c b/drivers/dma/k3dma.c
index 0f9cd7815f88..63677c0b6f18 100644
--- a/drivers/dma/k3dma.c
+++ b/drivers/dma/k3dma.c@@ -536,19 +536,14 @@ static struct dma_async_tx_descriptor *k3_dma_prep_slave_sg( size_t len, avail, total = 0; struct scatterlist *sg; dma_addr_t addr, src = 0, dst = 0; - int num = sglen, i; + int num, i; if (sgl == NULL) return NULL; c->cyclic = 0; - for_each_sg(sgl, sg, sglen, i) { - avail = sg_dma_len(sg); - if (avail > DMA_MAX_SIZE) - num += DIV_ROUND_UP(avail, DMA_MAX_SIZE) - 1; - } - + num = sg_nents_for_dma(sgl, sglen, DMA_MAX_SIZE); ds = k3_dma_alloc_desc_resource(num, chan); if (!ds) return NULL;
--
2.50.1