Why does the R-Tile Avalon® Streaming FPGA IP for PCI Express* example driver fail to install correctly? It can't be installed in CentOS* 8? - Why does the R-Tile Avalon® Streaming FPGA IP for PCI Express* example driver fail to install correctly? It can't be installed in CentOS* 8? Description When trying to install the example driver generated by the R-Tile Avalon® Streaming FPGA IP for PCI Express* Design Example in CentOS* 8, error messages like those shown below will be seen: error: macro "access_ok" passed 3 arguments, but takes just 2 if(! access_ok(VERIFY_WRITE, buf, sizeof(buf))) { error: ‘access_ok’ undeclared (first use in this function) if(! access_ok(VERIFY_WRITE, buf, sizeof(buf))) { Resolution A Linux* kernel mismatch causes these errors. The following steps can help to resolve this issue: In intel_fpga_pcie_chr.c , delete the first argument (VERIFY_WRITE/VERIFY_READ) of function "access_ok" In intel_fpga_pcie_ioctl.c , replace the name of function "dma_zalloc_coherent" with "dma_alloc_coherent" In intel_fpga_pcie_ioctl.c , in "access_ok(uarg, sizeof(uarg))", change the argument uarg to (void__user *)uarg In intel_fpga_pcie_setup.c , replace the name of function "ioremap_nocache" with "ioremap_cache" In intel_fpga_pcie_setup.c , comment the line of codes "MODULE_SUPPORTED_DEVICE("Intel(R) Stratix 10 FPGA")" The driver can be installed successfully and works correctly after these modifications. This problem isn't currently scheduled to be fixed. Custom Fields values: ['novalue'] Troubleshooting 15013714638 False ['R-Tile Avalon-ST for PCI Express'] ['FPGA Dev Tools Quartus® Prime Software Pro'] No plan to fix 22.2 ['Agilex™ 7 FPGA I-Series'] ['novalue'] ['novalue'] ['Agilex™ 7 FPGA I-Series Dev Kit']