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zynq_fpga: use sgtable-based scatterlist wrappers

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Use common wrappers operating directly on the struct sg_table objects to
fix incorrect use of statterlists related calls. dma_unmap_sg() function
has to be called with the number of elements originally passed to the
dma_map_sg() function, not the one returned in sgtable's nents.

CC: stable@vger.kernel.org
Fixes: 425902f5c8 ("fpga zynq: Use the scatterlist interface")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Xu Yilun <yilun.xu@intel.com>
Link: https://lore.kernel.org/r/20250616120932.1090614-1-m.szyprowski@samsung.com
Signed-off-by: Xu Yilun <yilun.xu@linux.intel.com>
This commit is contained in:
Marek Szyprowski 2025-06-16 14:09:32 +02:00 committed by Xu Yilun
parent 19272b37aa
commit 37e0070322
1 changed files with 2 additions and 2 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/fpga/zynq-fpga.c
View file

@ -406,7 +406,7 @@ static int zynq_fpga_ops_write(struct fpga_manager *mgr, struct sg_table *sgt)
} }
priv->dma_nelms = priv->dma_nelms =
dma_map_sg(mgr->dev.parent, sgt->sgl, sgt->nents, DMA_TO_DEVICE); dma_map_sgtable(mgr->dev.parent, sgt, DMA_TO_DEVICE, 0);
if (priv->dma_nelms == 0) { if (priv->dma_nelms == 0) {
dev_err(&mgr->dev, "Unable to DMA map (TO_DEVICE)\n"); dev_err(&mgr->dev, "Unable to DMA map (TO_DEVICE)\n");
return -ENOMEM; return -ENOMEM;
@ -478,7 +478,7 @@ static int zynq_fpga_ops_write(struct fpga_manager *mgr, struct sg_table *sgt)
clk_disable(priv->clk); clk_disable(priv->clk);
out_free: out_free:
dma_unmap_sg(mgr->dev.parent, sgt->sgl, sgt->nents, DMA_TO_DEVICE); dma_unmap_sgtable(mgr->dev.parent, sgt, DMA_TO_DEVICE, 0);
return err; return err;
} }