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Device properties framework updates for 4.21-rc1

Browse source 
- Introduce "software nodes", analogous to the DT and ACPI firmware
    nodes except that they can be created by kernel code, in order to
    complement fwnodes representing real firmware nodes when they are
    incomplete (for example missing device properties) and to supply
    the primary fwnode when the firmware lacks hardware description
    for a device completely, and replace the "property_set" struct
    fwnode_handle type with software nodes (Heikki Krogerus).
 
  - Clean up the just introduced software nodes support and fix a commet
    in the graph-handling code (Colin Ian King, Marco Felsch).
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Merge tag 'devprop-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull device properties framework updates from Rafael Wysocki:
 "This introduces 'software nodes' that are analogous to the DT and ACPI
  firmware nodes except that they can be created by drivers themselves
  and do a couple of assorted cleanups.

  Specifics:

   - Introduce "software nodes", analogous to the DT and ACPI firmware
     nodes except that they can be created by kernel code, in order to
     complement fwnodes representing real firmware nodes when they are
     incomplete (for example missing device properties) and to supply
     the primary fwnode when the firmware lacks hardware description for
     a device completely, and replace the "property_set" struct
     fwnode_handle type with software nodes (Heikki Krogerus).

   - Clean up the just introduced software nodes support and fix a
     commet in the graph-handling code (Colin Ian King, Marco Felsch)"

* tag 'devprop-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  device property: fix fwnode_graph_get_next_endpoint() documentation
  drivers: base: swnode: remove need for a temporary string for the node name
  device property: Remove struct property_set
  device property: Move device_add_properties() to swnode.c
  drivers: base: Introducing software nodes to the firmware node framework
  ACPI / glue: Add acpi_platform_notify() function
  drivers core: Prepare support for multiple platform notifications
  driver core: platform: Remove duplicated device_remove_properties() call
This commit is contained in:
Linus Torvalds 2018-12-25 15:01:46 -08:00
commit d8924c0d76
11 changed files with 766 additions and 514 deletions
Download patch file Download diff file Expand all files Collapse all files

1
drivers/acpi/bus.c
View file

@ -1237,7 +1237,6 @@ static int __init acpi_init(void)
acpi_kobj = NULL;
}
init_acpi_device_notify();
result = acpi_bus_init();
if (result) {
disable_acpi();

21
drivers/acpi/glue.c
View file

@ -296,7 +296,7 @@ int acpi_unbind_one(struct device *dev)
}
EXPORT_SYMBOL_GPL(acpi_unbind_one);
static int acpi_platform_notify(struct device *dev)
static int acpi_device_notify(struct device *dev)
{
struct acpi_bus_type *type = acpi_get_bus_type(dev);
struct acpi_device *adev;
@ -343,7 +343,7 @@ static int acpi_platform_notify(struct device *dev)
return ret;
}
static int acpi_platform_notify_remove(struct device *dev)
static int acpi_device_notify_remove(struct device *dev)
{
struct acpi_device *adev = ACPI_COMPANION(dev);
struct acpi_bus_type *type;
@ -361,12 +361,17 @@ static int acpi_platform_notify_remove(struct device *dev)
return 0;
}
void __init init_acpi_device_notify(void)
int acpi_platform_notify(struct device *dev, enum kobject_action action)
{
if (platform_notify || platform_notify_remove) {
printk(KERN_ERR PREFIX "Can't use platform_notify\n");
return;
switch (action) {
case KOBJ_ADD:
acpi_device_notify(dev);
break;
case KOBJ_REMOVE:
acpi_device_notify_remove(dev);
break;
default:
break;
}
platform_notify = acpi_platform_notify;
platform_notify_remove = acpi_platform_notify_remove;
return 0;
}

1
drivers/acpi/internal.h
View file

@ -23,7 +23,6 @@
int early_acpi_osi_init(void);
int acpi_osi_init(void);
acpi_status acpi_os_initialize1(void);
void init_acpi_device_notify(void);
int acpi_scan_init(void);
#ifdef CONFIG_PCI
void acpi_pci_root_init(void);