diff options
| author | Kay Sievers | 2005-10-01 14:49:43 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2005-10-28 18:52:51 +0200 |
| commit | a7fd67062efc5b0fc9a61368c607fa92d1d57f9e (patch) | |
| tree | 8b91f198640608bd99f4e4764394e5134220abcf /drivers/base/core.c | |
| parent | [PATCH] Driver core: pass interface to class interface methods (diff) | |
| download | kernel-qcow2-linux-a7fd67062efc5b0fc9a61368c607fa92d1d57f9e.tar.gz kernel-qcow2-linux-a7fd67062efc5b0fc9a61368c607fa92d1d57f9e.tar.xz kernel-qcow2-linux-a7fd67062efc5b0fc9a61368c607fa92d1d57f9e.zip | |
[PATCH] add sysfs attr to re-emit device hotplug event
A "coldplug + udevstart" can be simple like this:
for i in /sys/block/*/*/uevent; do echo 1 > $i; done
for i in /sys/class/*/*/uevent; do echo 1 > $i; done
for i in /sys/bus/*/devices/*/uevent; do echo 1 > $i; done
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/base/core.c')
| -rw-r--r-- | drivers/base/core.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c index 31109193e2c4..ac4b5fdd95f5 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -154,6 +154,13 @@ static struct kset_hotplug_ops device_hotplug_ops = { .hotplug = dev_hotplug, }; +static ssize_t store_uevent(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + kobject_hotplug(&dev->kobj, KOBJ_ADD); + return count; +} + /** * device_subsys - structure to be registered with kobject core. */ @@ -259,6 +266,14 @@ int device_add(struct device *dev) if ((error = kobject_add(&dev->kobj))) goto Error; + + dev->uevent_attr.attr.name = "uevent"; + dev->uevent_attr.attr.mode = S_IWUSR; + if (dev->driver) + dev->uevent_attr.attr.owner = dev->driver->owner; + dev->uevent_attr.store = store_uevent; + device_create_file(dev, &dev->uevent_attr); + kobject_hotplug(&dev->kobj, KOBJ_ADD); if ((error = device_pm_add(dev))) goto PMError; @@ -350,6 +365,7 @@ void device_del(struct device * dev) if (parent) klist_del(&dev->knode_parent); + device_remove_file(dev, &dev->uevent_attr); /* Notify the platform of the removal, in case they * need to do anything... |