device_schedule_callback() needs a module reference
This patch (as896b) fixes an oversight in the design of
device_schedule_callback(). It is necessary to acquire a reference to the
module owning the callback routine, to prevent the module from being
unloaded before the callback can run.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Satyam Sharma <satyam.sharma@gmail.com>
Cc: Neil Brown <neilb@suse.de>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index fea9a6b..7d5d1ec 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -80,7 +80,7 @@
#ifdef CONFIG_SYSFS
extern int sysfs_schedule_callback(struct kobject *kobj,
- void (*func)(void *), void *data);
+ void (*func)(void *), void *data, struct module *owner);
extern int __must_check
sysfs_create_dir(struct kobject *, struct dentry *);
@@ -137,7 +137,7 @@
#else /* CONFIG_SYSFS */
static inline int sysfs_schedule_callback(struct kobject *kobj,
- void (*func)(void *), void *data)
+ void (*func)(void *), void *data, struct module *owner)
{
return -ENOSYS;
}