diff options
| author | Rafael J. Wysocki <rjw@sisk.pl> | 2008-03-12 00:59:38 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-04-20 04:10:24 +0200 |
| commit | 57eee3d23e8833ca18708b374c648235691942ba (patch) | |
| tree | 59dc775f05ba7896663e0ab2262f4739f95d22f5 /drivers/base | |
| parent | PM: Handle device registrations during suspend/resume (diff) | |
| download | linux-57eee3d23e8833ca18708b374c648235691942ba.tar.xz linux-57eee3d23e8833ca18708b374c648235691942ba.zip | |
Driver core: Call device_pm_add() after bus_add_device() in device_add()
Include dpm_sysfs_add() into device_pm_add(), in analogy with
device_pm_remove(), and modify device_add() to call the latter after
bus_add_device(), to avoid situations in which the PM core may
attempt to suspend a device the registration of which has not been
successful.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/core.c | 15 | ||||
| -rw-r--r-- | drivers/base/power/main.c | 4 |
2 files changed, 8 insertions, 11 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c index 79848e6c5db5..adbc01788447 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -817,17 +817,12 @@ int device_add(struct device *dev) error = device_add_attrs(dev); if (error) goto AttrsError; - error = dpm_sysfs_add(dev); - if (error) - goto PMError; - error = device_pm_add(dev); - if (error) { - dpm_sysfs_remove(dev); - goto PMError; - } error = bus_add_device(dev); if (error) goto BusError; + error = device_pm_add(dev); + if (error) + goto PMError; kobject_uevent(&dev->kobj, KOBJ_ADD); bus_attach_device(dev); if (parent) @@ -847,9 +842,9 @@ int device_add(struct device *dev) Done: put_device(dev); return error; - BusError: - device_pm_remove(dev); PMError: + bus_remove_device(dev); + BusError: if (dev->bus) blocking_notifier_call_chain(&dev->bus->p->bus_notifier, BUS_NOTIFY_DEL_DEVICE, dev); diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index 0e3991a437c6..93a146940b91 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -81,7 +81,9 @@ int device_pm_add(struct device *dev) WARN_ON(true); error = -EBUSY; } else { - list_add_tail(&dev->power.entry, &dpm_active); + error = dpm_sysfs_add(dev); + if (!error) + list_add_tail(&dev->power.entry, &dpm_active); } mutex_unlock(&dpm_list_mtx); return error; |