From 57eee3d23e8833ca18708b374c648235691942ba Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Wed, 12 Mar 2008 00:59:38 +0100 Subject: [PATCH] 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 Acked-by: Pavel Machek Signed-off-by: Greg Kroah-Hartman --- drivers/base/core.c | 15 +++++---------- 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 79848e6c5db..adbc0178844 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 0e3991a437c..93a146940b9 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; -- 2.41.1