5.4-stable review patch. If anyone has any objections, please let me know.
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From: Marek Szyprowski m.szyprowski@samsung.com
commit 37e00703228ab44d0aacc32a97809a4f6f58df1b upstream.
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: 425902f5c8e3 ("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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/fpga/zynq-fpga.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/fpga/zynq-fpga.c +++ b/drivers/fpga/zynq-fpga.c @@ -406,7 +406,7 @@ static int zynq_fpga_ops_write(struct fp }
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) { dev_err(&mgr->dev, "Unable to DMA map (TO_DEVICE)\n"); return -ENOMEM; @@ -478,7 +478,7 @@ out_clk: clk_disable(priv->clk);
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; }