UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

driver core: Move device_links_purge() after bus_remove_device() 

The current ordering of code in device_del() triggers a WARN_ON()
in device_links_purge(), because of an unexpected link status.

The device_links_unbind_consumers() call in device_release_driver()
has to take place before device_links_purge() for the status of all
links to be correct, so move the device_links_purge() call in
device_del() after the invocation of bus_remove_device() which calls
device_release_driver().

Fixes: 9ed9895370 (driver core: Functional dependencies tracking support)
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jeffy Chen 2017-10-20 20:01:01 +08:00 committed by Greg Kroah-Hartman
parent 82d8ba717c
commit 2ec1615017
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/base/core.c
View File

@ -1958,7 +1958,6 @@ void device_del(struct device *dev)
blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
BUS_NOTIFY_DEL_DEVICE, dev);
device_links_purge(dev);
dpm_sysfs_remove(dev);
if (parent)
klist_del(&dev->p->knode_parent);
@ -1986,6 +1985,7 @@ void device_del(struct device *dev)
device_pm_remove(dev);
driver_deferred_probe_del(dev);
device_remove_properties(dev);
device_links_purge(dev);
/* Notify the platform of the removal, in case they
* need to do anything...