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staging: most: configfs: move configfs subsystems to container struct
This patch moves the declarations of the configfs subsystems to a superordinate container structure. This is done to get access to private subsystem data. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Link: https://lore.kernel.org/r/1573230068-27658-2-git-send-email-christian.gromm@microchip.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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parent
2d9d249153
commit
4845b3c8c8
1 changed files with 45 additions and 35 deletions
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@ -395,11 +395,12 @@ static const struct config_item_type mdev_link_type = {
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struct most_common {
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struct config_group group;
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struct configfs_subsystem subsys;
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};
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static struct most_common *to_most_common(struct config_item *item)
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static struct most_common *to_most_common(struct configfs_subsystem *subsys)
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{
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return container_of(to_config_group(item), struct most_common, group);
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return container_of(subsys, struct most_common, subsys);
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}
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static struct config_item *most_common_make_item(struct config_group *group,
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@ -426,7 +427,9 @@ static struct config_item *most_common_make_item(struct config_group *group,
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static void most_common_release(struct config_item *item)
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{
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kfree(to_most_common(item));
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struct config_group *group = to_config_group(item);
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kfree(to_most_common(group->cg_subsys));
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}
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static struct configfs_item_operations most_common_item_ops = {
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@ -443,31 +446,37 @@ static const struct config_item_type most_common_type = {
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.ct_owner = THIS_MODULE,
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};
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static struct configfs_subsystem most_cdev_subsys = {
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static struct most_common most_cdev = {
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.subsys = {
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.su_group = {
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.cg_item = {
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.ci_namebuf = "most_cdev",
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.ci_type = &most_common_type,
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},
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},
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},
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};
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static struct configfs_subsystem most_net_subsys = {
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static struct most_common most_net = {
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.subsys = {
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.su_group = {
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.cg_item = {
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.ci_namebuf = "most_net",
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.ci_type = &most_common_type,
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},
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},
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},
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};
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static struct configfs_subsystem most_video_subsys = {
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static struct most_common most_video = {
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.subsys = {
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.su_group = {
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.cg_item = {
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.ci_namebuf = "most_video",
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.ci_type = &most_common_type,
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},
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},
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},
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};
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struct most_snd_grp {
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@ -597,16 +606,17 @@ int most_register_configfs_subsys(struct core_component *c)
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{
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int ret;
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if (!strcmp(c->name, "cdev"))
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ret = configfs_register_subsystem(&most_cdev_subsys);
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else if (!strcmp(c->name, "net"))
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ret = configfs_register_subsystem(&most_net_subsys);
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else if (!strcmp(c->name, "video"))
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ret = configfs_register_subsystem(&most_video_subsys);
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else if (!strcmp(c->name, "sound"))
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if (!strcmp(c->name, "cdev")) {
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ret = configfs_register_subsystem(&most_cdev.subsys);
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} else if (!strcmp(c->name, "net")) {
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ret = configfs_register_subsystem(&most_net.subsys);
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} else if (!strcmp(c->name, "video")) {
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ret = configfs_register_subsystem(&most_video.subsys);
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} else if (!strcmp(c->name, "sound")) {
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ret = configfs_register_subsystem(&most_sound_subsys.subsys);
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else
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} else {
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return -ENODEV;
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}
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if (ret) {
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pr_err("Error %d while registering subsystem %s\n",
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@ -635,11 +645,11 @@ void most_interface_register_notify(const char *mdev)
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void most_deregister_configfs_subsys(struct core_component *c)
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{
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if (!strcmp(c->name, "cdev"))
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configfs_unregister_subsystem(&most_cdev_subsys);
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configfs_unregister_subsystem(&most_cdev.subsys);
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else if (!strcmp(c->name, "net"))
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configfs_unregister_subsystem(&most_net_subsys);
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configfs_unregister_subsystem(&most_net.subsys);
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else if (!strcmp(c->name, "video"))
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configfs_unregister_subsystem(&most_video_subsys);
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configfs_unregister_subsystem(&most_video.subsys);
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else if (!strcmp(c->name, "sound"))
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configfs_unregister_subsystem(&most_sound_subsys.subsys);
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}
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@ -647,14 +657,14 @@ EXPORT_SYMBOL_GPL(most_deregister_configfs_subsys);
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int __init configfs_init(void)
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{
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config_group_init(&most_cdev_subsys.su_group);
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mutex_init(&most_cdev_subsys.su_mutex);
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config_group_init(&most_cdev.subsys.su_group);
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mutex_init(&most_cdev.subsys.su_mutex);
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config_group_init(&most_net_subsys.su_group);
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mutex_init(&most_net_subsys.su_mutex);
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config_group_init(&most_net.subsys.su_group);
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mutex_init(&most_net.subsys.su_mutex);
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config_group_init(&most_video_subsys.su_group);
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mutex_init(&most_video_subsys.su_mutex);
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config_group_init(&most_video.subsys.su_group);
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mutex_init(&most_video.subsys.su_mutex);
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config_group_init(&most_sound_subsys.subsys.su_group);
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mutex_init(&most_sound_subsys.subsys.su_mutex);
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