diff options
| author | Jiang Liu <jiang.liu@huawei.com> | 2013-06-23 02:59:55 +0400 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-06-23 02:59:55 +0400 |
| commit | 94add0f82469fa3c4ff978d03a34da90813c819d (patch) | |
| tree | 467e9082ad2d979a216b3c0f4f0dbb15c7462b08 /drivers/acpi/dock.c | |
| parent | 9e895ace5d82df8929b16f58e9f515f6d54ab82d (diff) | |
| download | linux-94add0f82469fa3c4ff978d03a34da90813c819d.tar.xz | |
ACPI / dock: Initialize ACPI dock subsystem upfront
Commit 3b63aaa70e1 (PCI: acpiphp: Do not use ACPI PCI subdriver
mechanism) introduced an ACPI dock support regression, because it
changed the relative initialization order of the ACPI dock subsystem
and the ACPI-based PCI hotplug (acpiphp).
Namely, the ACPI dock subsystem has to be initialized before
acpiphp_enumerate_slots() is first run, which after commit
3b63aaa70e1 happens during the initial enumeration of the PCI
hierarchy triggered by the initial ACPI namespace scan in
acpi_scan_init(). For this reason, the dock subsystem has to be
initialized before the initial ACPI namespace scan in
acpi_scan_init().
To make that happen, modify the ACPI dock subsystem to be
non-modular and add the invocation of its initialization routine,
acpi_dock_init(), to acpi_scan_init() directly before the initial
namespace scan.
[rjw: Changelog, removal of dock_exit().]
References: https://bugzilla.kernel.org/show_bug.cgi?id=59501
Reported-and-tested-by: Alexander E. Patrakov <patrakov@gmail.com>
Tested-by: Illya Klymov <xanf@xanf.me>
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
Cc: 3.9+ <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/dock.c')
| -rw-r--r-- | drivers/acpi/dock.c | 42 |
1 files changed, 1 insertions, 41 deletions
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index ec117c6c996c..c3b34f94382f 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -994,30 +994,6 @@ err_unregister: } /** - * dock_remove - free up resources related to the dock station - */ -static int dock_remove(struct dock_station *ds) -{ - struct dock_dependent_device *dd, *tmp; - struct platform_device *dock_device = ds->dock_device; - - if (!dock_station_count) - return 0; - - /* remove dependent devices */ - list_for_each_entry_safe(dd, tmp, &ds->dependent_devices, list) - kfree(dd); - - list_del(&ds->sibling); - - /* cleanup sysfs */ - sysfs_remove_group(&dock_device->dev.kobj, &dock_attribute_group); - platform_device_unregister(dock_device); - - return 0; -} - -/** * find_dock_and_bay - look for dock stations and bays * @handle: acpi handle of a device * @lvl: unused @@ -1035,7 +1011,7 @@ find_dock_and_bay(acpi_handle handle, u32 lvl, void *context, void **rv) return AE_OK; } -static int __init dock_init(void) +int __init acpi_dock_init(void) { if (acpi_disabled) return 0; @@ -1054,19 +1030,3 @@ static int __init dock_init(void) ACPI_DOCK_DRIVER_DESCRIPTION, dock_station_count); return 0; } - -static void __exit dock_exit(void) -{ - struct dock_station *tmp, *dock_station; - - unregister_acpi_bus_notifier(&dock_acpi_notifier); - list_for_each_entry_safe(dock_station, tmp, &dock_stations, sibling) - dock_remove(dock_station); -} - -/* - * Must be called before drivers of devices in dock, otherwise we can't know - * which devices are in a dock - */ -subsys_initcall(dock_init); -module_exit(dock_exit); |