1 // SPDX-License-Identifier: GPL-2.0+
32 #define MY_NAME	THIS_MODULE->name
41 #define err(format, arg...) printk(KERN_ERR "%s: " format "\n", MY_NAME, ## arg)  macro
50 static struct pci_bus *bus;  variable
68 		return -EINVAL;  in validate_parameters()
72 		return -EINVAL;  in validate_parameters()
76 		err("Invalid hotplug bus bridge device bus number");  in validate_parameters()
77 		return -EINVAL;  in validate_parameters()
82 		err("Invalid hotplug bus bridge device");  in validate_parameters()
83 		return -EINVAL;  in validate_parameters()
88 		err("Invalid hotplug bus bridge device slot number");  in validate_parameters()
89 		return -EINVAL;  in validate_parameters()
97 		err("Need to specify first_slot and last_slot");  in validate_parameters()
98 		return -EINVAL;  in validate_parameters()
101 		err("first_slot must be less than last_slot");  in validate_parameters()
102 		return -EINVAL;  in validate_parameters()
108 		err("Invalid #ENUM bit");  in validate_parameters()
109 		return -EINVAL;  in validate_parameters()
136 		return -EBUSY;  in cpcihp_generic_init()
140 	if (!dev || dev->hdr_type != PCI_HEADER_TYPE_BRIDGE) {  in cpcihp_generic_init()
141 		err("Invalid bridge device %s", bridge);  in cpcihp_generic_init()
143 		return -EINVAL;  in cpcihp_generic_init()
145 	bus = dev->subordinate;  in cpcihp_generic_init()
154 		err("Could not register cPCI hotplug controller");  in cpcihp_generic_init()
155 		return -ENODEV;  in cpcihp_generic_init()
159 	status = cpci_hp_register_bus(bus, first_slot, last_slot);  in cpcihp_generic_init()
161 		err("Could not register cPCI hotplug bus");  in cpcihp_generic_init()
164 	dbg("registered bus");  in cpcihp_generic_init()
168 		err("Could not started cPCI hotplug system");  in cpcihp_generic_init()
174 	cpci_hp_unregister_bus(bus);  in cpcihp_generic_init()
177 	err("status = %d", status);  in cpcihp_generic_init()
185 	cpci_hp_unregister_bus(bus);  in cpcihp_generic_exit()
199 MODULE_PARM_DESC(bridge, "Hotswap bus bridge device, <bus>:<slot> (bus and slot are in hexadecimal)…
201 MODULE_PARM_DESC(first_slot, "Hotswap bus first slot number");
203 MODULE_PARM_DESC(last_slot, "Hotswap bus last slot number");
207 MODULE_PARM_DESC(enum_bit, "#ENUM signal bit (0-7)");