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authorAlan Stern <stern@rowland.harvard.edu>2007-03-15 22:50:34 +0300
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-03-16 01:29:26 +0300
commitd9a9cdfb078d755e648d53ec25b7370f84ee5729 (patch)
tree308380483fd6241b1d0ef5916b9329c1c5df00f6 /include/linux/sysfs.h
parent6ab27c6bf38d5ff71dafeca77b79e7c284804b75 (diff)
downloadlinux-d9a9cdfb078d755e648d53ec25b7370f84ee5729.tar.xz
[PATCH] sysfs and driver core: add callback helper, used by SCSI and S390
This patch (as868) adds a helper routine for device drivers that need to set up a callback to perform some action in a different process's context. This is intended for use by attribute methods that want to unregister themselves or their parent device. Attribute method calls are mutually exclusive with unregistration, so such actions cannot be taken directly. Two attribute methods are converted to use the new helper routine: one for SCSI device deletion and one for System/390 ccwgroup devices. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Cc: Hugh Dickins <hugh@veritas.com> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Cc: Oliver Neukum <oneukum@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/sysfs.h')
-rw-r--r--include/linux/sysfs.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index 523405e1e1f6..0544edda7168 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -78,6 +78,9 @@ struct sysfs_ops {
#ifdef CONFIG_SYSFS
+extern int sysfs_schedule_callback(struct kobject *kobj,
+ void (*func)(void *), void *data);
+
extern int __must_check
sysfs_create_dir(struct kobject *, struct dentry *);
@@ -132,6 +135,12 @@ extern int __must_check sysfs_init(void);
#else /* CONFIG_SYSFS */
+static inline int sysfs_schedule_callback(struct kobject *kobj,
+ void (*func)(void *), void *data)
+{
+ return -ENOSYS;
+}
+
static inline int sysfs_create_dir(struct kobject * k, struct dentry *shadow)
{
return 0;