// SPDX-License-Identifier: GPL-2.0-only /* * Virtual EISA root driver. * Acts as a placeholder if we don't have a proper EISA bridge. * * (C) 2003 Marc Zyngier <maz@wild-wind.fr.eu.org> * modified for SNI usage by Thomas Bogendoerfer */ #include <linux/kernel.h> #include <linux/platform_device.h> #include <linux/eisa.h> #include <linux/init.h> /* The default EISA device parent (virtual root device). * Now use a platform device, since that's the obvious choice. */ static struct platform_device eisa_root_dev = { .name = "eisa", .id = 0, }; static struct eisa_root_device eisa_bus_root = { .dev = &eisa_root_dev.dev, .bus_base_addr = 0, .res = &ioport_resource, .slots = EISA_MAX_SLOTS, .dma_mask = 0xffffffff, .force_probe = 1, }; int __init sni_eisa_root_init(void) { int r; r = platform_device_register(&eisa_root_dev); if (!r) return r; dev_set_drvdata(&eisa_root_dev.dev, &eisa_bus_root); if (eisa_root_register(&eisa_bus_root)) { /* A real bridge may have been registered before * us. So quietly unregister. */ platform_device_unregister(&eisa_root_dev); return -1; } return 0; }