fpga: zynq_fpga: Fix the wrong usage of dma_map_sgtable()
commit 1ca61060de92a4320d73adfe5dc8d335653907ac upstream. dma_map_sgtable() returns only 0 or the error code. Read sgt->nents to get the number of mapped segments. Fixes: 37e00703228a ("zynq_fpga: use sgtable-based scatterlist wrappers") Reported-by:Pavel Pisa <pisa@fel.cvut.cz> Closes: https://lore.kernel.org/linux-fpga/202508041548.22955.pisa@fel.cvut.cz/ Reviewed-by:
Jason Gunthorpe <jgg@nvidia.com> Reviewed-by:
Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by:
Xu Yilun <yilun.xu@linux.intel.com> Tested-by:
Pavel Pisa <pisa@fel.cvut.cz> Link: https://lore.kernel.org/r/20250806070605.1920909-2-yilun.xu@linux.intel.com Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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