Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * ACPI PCI Hot Plug Controller Driver |
| 3 | * |
| 4 | * Copyright (C) 1995,2001 Compaq Computer Corporation |
| 5 | * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com) |
| 6 | * Copyright (C) 2001 IBM Corp. |
| 7 | * Copyright (C) 2002 Hiroshi Aono (h-aono@ap.jp.nec.com) |
| 8 | * Copyright (C) 2002,2003 Takayoshi Kochi (t-kochi@bq.jp.nec.com) |
| 9 | * Copyright (C) 2002,2003 NEC Corporation |
Rajesh Shah | 42f49a6 | 2005-04-28 00:25:53 -0700 | [diff] [blame] | 10 | * Copyright (C) 2003-2005 Matthew Wilcox (matthew.wilcox@hp.com) |
| 11 | * Copyright (C) 2003-2005 Hewlett Packard |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | * |
| 13 | * All rights reserved. |
| 14 | * |
| 15 | * This program is free software; you can redistribute it and/or modify |
| 16 | * it under the terms of the GNU General Public License as published by |
| 17 | * the Free Software Foundation; either version 2 of the License, or (at |
| 18 | * your option) any later version. |
| 19 | * |
| 20 | * This program is distributed in the hope that it will be useful, but |
| 21 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
| 23 | * NON INFRINGEMENT. See the GNU General Public License for more |
| 24 | * details. |
| 25 | * |
| 26 | * You should have received a copy of the GNU General Public License |
| 27 | * along with this program; if not, write to the Free Software |
| 28 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 29 | * |
Kristen Carlson Accardi | 998be20 | 2006-07-26 10:52:33 -0700 | [diff] [blame] | 30 | * Send feedback to <kristen.c.accardi@intel.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | * |
| 32 | */ |
| 33 | |
Lan Tianyu | bd95079 | 2013-09-24 18:11:48 -0600 | [diff] [blame] | 34 | #define pr_fmt(fmt) "acpiphp: " fmt |
| 35 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include <linux/init.h> |
| 37 | #include <linux/module.h> |
| 38 | #include <linux/moduleparam.h> |
| 39 | |
| 40 | #include <linux/kernel.h> |
| 41 | #include <linux/pci.h> |
Jiang Liu | 3b63aaa | 2013-04-12 05:44:26 +0000 | [diff] [blame] | 42 | #include <linux/pci-acpi.h> |
Greg Kroah-Hartman | 7a54f25 | 2006-10-13 20:05:19 -0700 | [diff] [blame] | 43 | #include <linux/pci_hotplug.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <linux/slab.h> |
| 45 | #include <linux/smp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #include "acpiphp.h" |
| 47 | |
Alex Chiang | df77cd1 | 2008-10-20 17:41:12 -0600 | [diff] [blame] | 48 | /* name size which is used for entries in pcihpfs */ |
| 49 | #define SLOT_NAME_SIZE 21 /* {_SUN} */ |
| 50 | |
Jiang Liu | 6037a80 | 2013-04-12 05:44:25 +0000 | [diff] [blame] | 51 | bool acpiphp_disabled; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | |
| 53 | /* local variables */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | static struct acpiphp_attention_info *attention_info; |
| 55 | |
Rajesh Shah | 42f49a6 | 2005-04-28 00:25:53 -0700 | [diff] [blame] | 56 | #define DRIVER_VERSION "0.5" |
| 57 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <gregkh@us.ibm.com>, Takayoshi Kochi <t-kochi@bq.jp.nec.com>, Matthew Wilcox <willy@hp.com>" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | #define DRIVER_DESC "ACPI Hot Plug PCI Controller Driver" |
| 59 | |
| 60 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 61 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 62 | MODULE_LICENSE("GPL"); |
Jiang Liu | 6037a80 | 2013-04-12 05:44:25 +0000 | [diff] [blame] | 63 | MODULE_PARM_DESC(disable, "disable acpiphp driver"); |
Jiang Liu | 6037a80 | 2013-04-12 05:44:25 +0000 | [diff] [blame] | 64 | module_param_named(disable, acpiphp_disabled, bool, 0444); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 66 | static int enable_slot(struct hotplug_slot *slot); |
| 67 | static int disable_slot(struct hotplug_slot *slot); |
| 68 | static int set_attention_status(struct hotplug_slot *slot, u8 value); |
| 69 | static int get_power_status(struct hotplug_slot *slot, u8 *value); |
| 70 | static int get_attention_status(struct hotplug_slot *slot, u8 *value); |
| 71 | static int get_latch_status(struct hotplug_slot *slot, u8 *value); |
| 72 | static int get_adapter_status(struct hotplug_slot *slot, u8 *value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | |
| 74 | static struct hotplug_slot_ops acpi_hotplug_slot_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | .enable_slot = enable_slot, |
| 76 | .disable_slot = disable_slot, |
| 77 | .set_attention_status = set_attention_status, |
| 78 | .get_power_status = get_power_status, |
| 79 | .get_attention_status = get_attention_status, |
| 80 | .get_latch_status = get_latch_status, |
| 81 | .get_adapter_status = get_adapter_status, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | }; |
| 83 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | /** |
| 85 | * acpiphp_register_attention - set attention LED callback |
| 86 | * @info: must be completely filled with LED callbacks |
| 87 | * |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 88 | * Description: This is used to register a hardware specific ACPI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | * driver that manipulates the attention LED. All the fields in |
| 90 | * info must be set. |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 91 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | int acpiphp_register_attention(struct acpiphp_attention_info *info) |
| 93 | { |
| 94 | int retval = -EINVAL; |
| 95 | |
| 96 | if (info && info->owner && info->set_attn && |
| 97 | info->get_attn && !attention_info) { |
| 98 | retval = 0; |
| 99 | attention_info = info; |
| 100 | } |
| 101 | return retval; |
| 102 | } |
Ryan Desfosses | b7fe943 | 2014-04-25 14:32:25 -0600 | [diff] [blame] | 103 | EXPORT_SYMBOL_GPL(acpiphp_register_attention); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | |
| 105 | |
| 106 | /** |
| 107 | * acpiphp_unregister_attention - unset attention LED callback |
| 108 | * @info: must match the pointer used to register |
| 109 | * |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 110 | * Description: This is used to un-register a hardware specific acpi |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 111 | * driver that manipulates the attention LED. The pointer to the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | * info struct must be the same as the one used to set it. |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 113 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | int acpiphp_unregister_attention(struct acpiphp_attention_info *info) |
| 115 | { |
| 116 | int retval = -EINVAL; |
| 117 | |
| 118 | if (info && attention_info == info) { |
| 119 | attention_info = NULL; |
| 120 | retval = 0; |
| 121 | } |
| 122 | return retval; |
| 123 | } |
Ryan Desfosses | b7fe943 | 2014-04-25 14:32:25 -0600 | [diff] [blame] | 124 | EXPORT_SYMBOL_GPL(acpiphp_unregister_attention); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | |
| 126 | |
| 127 | /** |
| 128 | * enable_slot - power on and enable a slot |
| 129 | * @hotplug_slot: slot to enable |
| 130 | * |
| 131 | * Actual tasks are done in acpiphp_enable_slot() |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | */ |
| 133 | static int enable_slot(struct hotplug_slot *hotplug_slot) |
| 134 | { |
| 135 | struct slot *slot = hotplug_slot->private; |
| 136 | |
Lan Tianyu | bd95079 | 2013-09-24 18:11:48 -0600 | [diff] [blame] | 137 | pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | |
| 139 | /* enable the specified slot */ |
| 140 | return acpiphp_enable_slot(slot->acpi_slot); |
| 141 | } |
| 142 | |
| 143 | |
| 144 | /** |
| 145 | * disable_slot - disable and power off a slot |
| 146 | * @hotplug_slot: slot to disable |
| 147 | * |
| 148 | * Actual tasks are done in acpiphp_disable_slot() |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | */ |
| 150 | static int disable_slot(struct hotplug_slot *hotplug_slot) |
| 151 | { |
| 152 | struct slot *slot = hotplug_slot->private; |
| 153 | |
Lan Tianyu | bd95079 | 2013-09-24 18:11:48 -0600 | [diff] [blame] | 154 | pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | |
| 156 | /* disable the specified slot */ |
Rafael J. Wysocki | 9217a98 | 2014-01-10 15:24:41 +0100 | [diff] [blame] | 157 | return acpiphp_disable_slot(slot->acpi_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | } |
| 159 | |
| 160 | |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 161 | /** |
| 162 | * set_attention_status - set attention LED |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | * @hotplug_slot: slot to set attention LED on |
| 164 | * @status: value to set attention LED to (0 or 1) |
| 165 | * |
| 166 | * attention status LED, so we use a callback that |
| 167 | * was registered with us. This allows hardware specific |
| 168 | * ACPI implementations to blink the light for us. |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 169 | */ |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 170 | static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status) |
| 171 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | int retval = -ENODEV; |
| 173 | |
Lan Tianyu | bd95079 | 2013-09-24 18:11:48 -0600 | [diff] [blame] | 174 | pr_debug("%s - physical_slot = %s\n", __func__, |
| 175 | hotplug_slot_name(hotplug_slot)); |
| 176 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | if (attention_info && try_module_get(attention_info->owner)) { |
| 178 | retval = attention_info->set_attn(hotplug_slot, status); |
| 179 | module_put(attention_info->owner); |
| 180 | } else |
| 181 | attention_info = NULL; |
| 182 | return retval; |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 183 | } |
| 184 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | |
| 186 | /** |
| 187 | * get_power_status - get power status of a slot |
| 188 | * @hotplug_slot: slot to get status |
| 189 | * @value: pointer to store status |
| 190 | * |
| 191 | * Some platforms may not implement _STA method properly. |
| 192 | * In that case, the value returned may not be reliable. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | */ |
| 194 | static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value) |
| 195 | { |
| 196 | struct slot *slot = hotplug_slot->private; |
| 197 | |
Lan Tianyu | bd95079 | 2013-09-24 18:11:48 -0600 | [diff] [blame] | 198 | pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | |
| 200 | *value = acpiphp_get_power_status(slot->acpi_slot); |
| 201 | |
| 202 | return 0; |
| 203 | } |
| 204 | |
| 205 | |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 206 | /** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | * get_attention_status - get attention LED status |
| 208 | * @hotplug_slot: slot to get status from |
| 209 | * @value: returns with value of attention LED |
| 210 | * |
| 211 | * ACPI doesn't have known method to determine the state |
| 212 | * of the attention status LED, so we use a callback that |
| 213 | * was registered with us. This allows hardware specific |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 214 | * ACPI implementations to determine its state. |
| 215 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value) |
| 217 | { |
| 218 | int retval = -EINVAL; |
| 219 | |
Lan Tianyu | bd95079 | 2013-09-24 18:11:48 -0600 | [diff] [blame] | 220 | pr_debug("%s - physical_slot = %s\n", __func__, |
| 221 | hotplug_slot_name(hotplug_slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | |
| 223 | if (attention_info && try_module_get(attention_info->owner)) { |
| 224 | retval = attention_info->get_attn(hotplug_slot, value); |
| 225 | module_put(attention_info->owner); |
| 226 | } else |
| 227 | attention_info = NULL; |
| 228 | return retval; |
| 229 | } |
| 230 | |
| 231 | |
| 232 | /** |
| 233 | * get_latch_status - get latch status of a slot |
| 234 | * @hotplug_slot: slot to get status |
| 235 | * @value: pointer to store status |
| 236 | * |
| 237 | * ACPI doesn't provide any formal means to access latch status. |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 238 | * Instead, we fake latch status from _STA. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | */ |
| 240 | static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value) |
| 241 | { |
| 242 | struct slot *slot = hotplug_slot->private; |
| 243 | |
Lan Tianyu | bd95079 | 2013-09-24 18:11:48 -0600 | [diff] [blame] | 244 | pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | |
| 246 | *value = acpiphp_get_latch_status(slot->acpi_slot); |
| 247 | |
| 248 | return 0; |
| 249 | } |
| 250 | |
| 251 | |
| 252 | /** |
| 253 | * get_adapter_status - get adapter status of a slot |
| 254 | * @hotplug_slot: slot to get status |
| 255 | * @value: pointer to store status |
| 256 | * |
| 257 | * ACPI doesn't provide any formal means to access adapter status. |
Randy Dunlap | 26e6c66 | 2007-11-28 09:04:30 -0800 | [diff] [blame] | 258 | * Instead, we fake adapter status from _STA. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | */ |
| 260 | static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value) |
| 261 | { |
| 262 | struct slot *slot = hotplug_slot->private; |
| 263 | |
Lan Tianyu | bd95079 | 2013-09-24 18:11:48 -0600 | [diff] [blame] | 264 | pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | |
| 266 | *value = acpiphp_get_adapter_status(slot->acpi_slot); |
| 267 | |
| 268 | return 0; |
| 269 | } |
| 270 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | /** |
| 272 | * release_slot - free up the memory used by a slot |
| 273 | * @hotplug_slot: slot to free |
| 274 | */ |
| 275 | static void release_slot(struct hotplug_slot *hotplug_slot) |
| 276 | { |
| 277 | struct slot *slot = hotplug_slot->private; |
| 278 | |
Lan Tianyu | bd95079 | 2013-09-24 18:11:48 -0600 | [diff] [blame] | 279 | pr_debug("%s - physical_slot = %s\n", __func__, slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | kfree(slot->hotplug_slot); |
| 282 | kfree(slot); |
| 283 | } |
| 284 | |
MUNEDA Takahiro | e27da38 | 2006-02-23 17:56:08 -0800 | [diff] [blame] | 285 | /* callback routine to initialize 'struct slot' for each slot */ |
Rafael J. Wysocki | 7342798 | 2013-07-13 23:27:25 +0200 | [diff] [blame] | 286 | int acpiphp_register_hotplug_slot(struct acpiphp_slot *acpiphp_slot, |
| 287 | unsigned int sun) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | { |
| 289 | struct slot *slot; |
| 290 | int retval = -ENOMEM; |
Alex Chiang | df77cd1 | 2008-10-20 17:41:12 -0600 | [diff] [blame] | 291 | char name[SLOT_NAME_SIZE]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | |
MUNEDA Takahiro | e27da38 | 2006-02-23 17:56:08 -0800 | [diff] [blame] | 293 | slot = kzalloc(sizeof(*slot), GFP_KERNEL); |
| 294 | if (!slot) |
| 295 | goto error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | |
Rolf Eike Beer | ac9e989 | 2006-11-13 15:12:45 -0800 | [diff] [blame] | 297 | slot->hotplug_slot = kzalloc(sizeof(*slot->hotplug_slot), GFP_KERNEL); |
MUNEDA Takahiro | e27da38 | 2006-02-23 17:56:08 -0800 | [diff] [blame] | 298 | if (!slot->hotplug_slot) |
| 299 | goto error_slot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | |
Rolf Eike Beer | ac9e989 | 2006-11-13 15:12:45 -0800 | [diff] [blame] | 301 | slot->hotplug_slot->info = &slot->info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | |
MUNEDA Takahiro | e27da38 | 2006-02-23 17:56:08 -0800 | [diff] [blame] | 303 | slot->hotplug_slot->private = slot; |
| 304 | slot->hotplug_slot->release = &release_slot; |
| 305 | slot->hotplug_slot->ops = &acpi_hotplug_slot_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | |
MUNEDA Takahiro | e27da38 | 2006-02-23 17:56:08 -0800 | [diff] [blame] | 307 | slot->acpi_slot = acpiphp_slot; |
| 308 | slot->hotplug_slot->info->power_status = acpiphp_get_power_status(slot->acpi_slot); |
| 309 | slot->hotplug_slot->info->attention_status = 0; |
| 310 | slot->hotplug_slot->info->latch_status = acpiphp_get_latch_status(slot->acpi_slot); |
| 311 | slot->hotplug_slot->info->adapter_status = acpiphp_get_adapter_status(slot->acpi_slot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | |
MUNEDA Takahiro | e27da38 | 2006-02-23 17:56:08 -0800 | [diff] [blame] | 313 | acpiphp_slot->slot = slot; |
Rafael J. Wysocki | 7342798 | 2013-07-13 23:27:25 +0200 | [diff] [blame] | 314 | slot->sun = sun; |
| 315 | snprintf(name, SLOT_NAME_SIZE, "%u", sun); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | |
Rafael J. Wysocki | bda46db | 2013-07-13 23:27:25 +0200 | [diff] [blame] | 317 | retval = pci_hp_register(slot->hotplug_slot, acpiphp_slot->bus, |
| 318 | acpiphp_slot->device, name); |
Alex Chiang | f46753c | 2008-06-10 15:28:50 -0600 | [diff] [blame] | 319 | if (retval == -EBUSY) |
| 320 | goto error_hpslot; |
MUNEDA Takahiro | e27da38 | 2006-02-23 17:56:08 -0800 | [diff] [blame] | 321 | if (retval) { |
Lan Tianyu | bd95079 | 2013-09-24 18:11:48 -0600 | [diff] [blame] | 322 | pr_err("pci_hp_register failed with error %d\n", retval); |
Rolf Eike Beer | ac9e989 | 2006-11-13 15:12:45 -0800 | [diff] [blame] | 323 | goto error_hpslot; |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 324 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | |
Lan Tianyu | bd95079 | 2013-09-24 18:11:48 -0600 | [diff] [blame] | 326 | pr_info("Slot [%s] registered\n", slot_name(slot)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | |
| 328 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | error_hpslot: |
| 330 | kfree(slot->hotplug_slot); |
| 331 | error_slot: |
| 332 | kfree(slot); |
| 333 | error: |
| 334 | return retval; |
| 335 | } |
| 336 | |
| 337 | |
MUNEDA Takahiro | e27da38 | 2006-02-23 17:56:08 -0800 | [diff] [blame] | 338 | void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *acpiphp_slot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | { |
MUNEDA Takahiro | e27da38 | 2006-02-23 17:56:08 -0800 | [diff] [blame] | 340 | struct slot *slot = acpiphp_slot->slot; |
| 341 | int retval = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | |
Lan Tianyu | bd95079 | 2013-09-24 18:11:48 -0600 | [diff] [blame] | 343 | pr_info("Slot [%s] unregistered\n", slot_name(slot)); |
MUNEDA Takahiro | e27da38 | 2006-02-23 17:56:08 -0800 | [diff] [blame] | 344 | |
| 345 | retval = pci_hp_deregister(slot->hotplug_slot); |
| 346 | if (retval) |
Lan Tianyu | bd95079 | 2013-09-24 18:11:48 -0600 | [diff] [blame] | 347 | pr_err("pci_hp_deregister failed with error %d\n", retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | } |
| 349 | |
| 350 | |
Jiang Liu | 3b63aaa | 2013-04-12 05:44:26 +0000 | [diff] [blame] | 351 | void __init acpiphp_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | { |
Lan Tianyu | bd95079 | 2013-09-24 18:11:48 -0600 | [diff] [blame] | 353 | pr_info(DRIVER_DESC " version: " DRIVER_VERSION "%s\n", |
Jiang Liu | 6037a80 | 2013-04-12 05:44:25 +0000 | [diff] [blame] | 354 | acpiphp_disabled ? ", disabled by user; please report a bug" |
| 355 | : ""); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | } |