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>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index fea9a6b3fb7b..7d5d1ec95c2e 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -80,7 +80,7 @@ struct sysfs_ops {
 #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 @@ extern int __must_check sysfs_init(void);
 #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;
 }