core.c (287905e68dd29873bcb7986a8290cd1e4cfde600) core.c (da6d647598a6d182eb6a0344a7b14ae005244399)
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * drivers/base/core.c - core driver model code (device registration, etc)
4 *
5 * Copyright (c) 2002-3 Patrick Mochel
6 * Copyright (c) 2002-3 Open Source Development Labs
7 * Copyright (c) 2006 Greg Kroah-Hartman <gregkh@suse.de>
8 * Copyright (c) 2006 Novell, Inc.

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1036
1037static void device_link_drop_managed(struct device_link *link)
1038{
1039 link->flags &= ~DL_FLAG_MANAGED;
1040 WRITE_ONCE(link->status, DL_STATE_NONE);
1041 kref_put(&link->kref, __device_link_del);
1042}
1043
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * drivers/base/core.c - core driver model code (device registration, etc)
4 *
5 * Copyright (c) 2002-3 Patrick Mochel
6 * Copyright (c) 2002-3 Open Source Development Labs
7 * Copyright (c) 2006 Greg Kroah-Hartman <gregkh@suse.de>
8 * Copyright (c) 2006 Novell, Inc.

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1036
1037static void device_link_drop_managed(struct device_link *link)
1038{
1039 link->flags &= ~DL_FLAG_MANAGED;
1040 WRITE_ONCE(link->status, DL_STATE_NONE);
1041 kref_put(&link->kref, __device_link_del);
1042}
1043
1044static ssize_t waiting_for_supplier_show(struct device *dev,
1045 struct device_attribute *attr,
1046 char *buf)
1047{
1048 bool val;
1049
1050 device_lock(dev);
1051 mutex_lock(&wfs_lock);
1052 val = !list_empty(&dev->links.needs_suppliers)
1053 && dev->links.need_for_probe;
1054 mutex_unlock(&wfs_lock);
1055 device_unlock(dev);
1056 return sprintf(buf, "%u\n", val);
1057}
1058static DEVICE_ATTR_RO(waiting_for_supplier);
1059
1044/**
1045 * device_links_driver_bound - Update device links after probing its driver.
1046 * @dev: Device to update the links for.
1047 *
1048 * The probe has been successful, so update links from this device to any
1049 * consumers by changing their status to "available".
1050 *
1051 * Also change the status of @dev's links to suppliers to "active".

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1060 /*
1061 * If a device probes successfully, it's expected to have created all
1062 * the device links it needs to or make new device links as it needs
1063 * them. So, it no longer needs to wait on any suppliers.
1064 */
1065 mutex_lock(&wfs_lock);
1066 list_del_init(&dev->links.needs_suppliers);
1067 mutex_unlock(&wfs_lock);
1060/**
1061 * device_links_driver_bound - Update device links after probing its driver.
1062 * @dev: Device to update the links for.
1063 *
1064 * The probe has been successful, so update links from this device to any
1065 * consumers by changing their status to "available".
1066 *
1067 * Also change the status of @dev's links to suppliers to "active".

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1076 /*
1077 * If a device probes successfully, it's expected to have created all
1078 * the device links it needs to or make new device links as it needs
1079 * them. So, it no longer needs to wait on any suppliers.
1080 */
1081 mutex_lock(&wfs_lock);
1082 list_del_init(&dev->links.needs_suppliers);
1083 mutex_unlock(&wfs_lock);
1084 device_remove_file(dev, &dev_attr_waiting_for_supplier);
1068
1069 device_links_write_lock();
1070
1071 list_for_each_entry(link, &dev->links.consumers, s_node) {
1072 if (!(link->flags & DL_FLAG_MANAGED))
1073 continue;
1074
1075 /*

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2139 goto err_remove_type_groups;
2140
2141 if (device_supports_offline(dev) && !dev->offline_disabled) {
2142 error = device_create_file(dev, &dev_attr_online);
2143 if (error)
2144 goto err_remove_dev_groups;
2145 }
2146
1085
1086 device_links_write_lock();
1087
1088 list_for_each_entry(link, &dev->links.consumers, s_node) {
1089 if (!(link->flags & DL_FLAG_MANAGED))
1090 continue;
1091
1092 /*

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2156 goto err_remove_type_groups;
2157
2158 if (device_supports_offline(dev) && !dev->offline_disabled) {
2159 error = device_create_file(dev, &dev_attr_online);
2160 if (error)
2161 goto err_remove_dev_groups;
2162 }
2163
2164 if (fw_devlink_flags && !fw_devlink_is_permissive()) {
2165 error = device_create_file(dev, &dev_attr_waiting_for_supplier);
2166 if (error)
2167 goto err_remove_dev_online;
2168 }
2169
2147 return 0;
2148
2170 return 0;
2171
2172 err_remove_dev_online:
2173 device_remove_file(dev, &dev_attr_online);
2149 err_remove_dev_groups:
2150 device_remove_groups(dev, dev->groups);
2151 err_remove_type_groups:
2152 if (type)
2153 device_remove_groups(dev, type->groups);
2154 err_remove_class_groups:
2155 if (class)
2156 device_remove_groups(dev, class->dev_groups);
2157
2158 return error;
2159}
2160
2161static void device_remove_attrs(struct device *dev)
2162{
2163 struct class *class = dev->class;
2164 const struct device_type *type = dev->type;
2165
2174 err_remove_dev_groups:
2175 device_remove_groups(dev, dev->groups);
2176 err_remove_type_groups:
2177 if (type)
2178 device_remove_groups(dev, type->groups);
2179 err_remove_class_groups:
2180 if (class)
2181 device_remove_groups(dev, class->dev_groups);
2182
2183 return error;
2184}
2185
2186static void device_remove_attrs(struct device *dev)
2187{
2188 struct class *class = dev->class;
2189 const struct device_type *type = dev->type;
2190
2191 device_remove_file(dev, &dev_attr_waiting_for_supplier);
2166 device_remove_file(dev, &dev_attr_online);
2167 device_remove_groups(dev, dev->groups);
2168
2169 if (type)
2170 device_remove_groups(dev, type->groups);
2171
2172 if (class)
2173 device_remove_groups(dev, class->dev_groups);

--- 2082 unchanged lines hidden --- 		2192 device_remove_file(dev, &dev_attr_online);
2193 device_remove_groups(dev, dev->groups);
2194
2195 if (type)
2196 device_remove_groups(dev, type->groups);
2197
2198 if (class)
2199 device_remove_groups(dev, class->dev_groups);

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