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driver core: make software nodes available earlier 

Software nodes are currently initialized in a function registered as
a postcore_initcall(). However, some devices may want to register
software nodes earlier than that (or also in a postcore_initcall() where
they're at the mercy of the link order). Move the initialization to
driver_init() making swnode available much earlier as well as making
their initialization time deterministic.

Suggested-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20260402-nokia770-gpio-swnodes-v5-3-d730db3dd299@oss.qualcomm.com
[ Fix typo in the commit message: "s/merci/mercy/". - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
This commit is contained in:
Bartosz Golaszewski 2026-04-02 16:15:04 +02:00 committed by Danilo Krummrich
parent b3eb6a25b9
commit 1cf996ac30
3 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/base/base.h
View File

@ -312,6 +312,7 @@ static inline int devtmpfs_create_node(struct device *dev) { return 0; }
static inline int devtmpfs_delete_node(struct device *dev) { return 0; }
#endif
void software_node_init(void);
void software_node_notify(struct device *dev);
void software_node_notify_remove(struct device *dev);

1
drivers/base/init.c
View File

@ -34,6 +34,7 @@ void __init driver_init(void)
*/
faux_bus_init();
of_core_init();
software_node_init();
platform_bus_init();
auxiliary_bus_init();
memory_dev_init();

6
drivers/base/swnode.c
View File

@ -1127,11 +1127,9 @@ void software_node_notify_remove(struct device *dev)
}
}
static int __init software_node_init(void)
void __init software_node_init(void)
{
swnode_kset = kset_create_and_add("software_nodes", NULL, kernel_kobj);
if (!swnode_kset)
return -ENOMEM;
return 0;
pr_err("failed to register software nodes\n");
}
postcore_initcall(software_node_init);