sysfs: remove BUG_ON() from sysfs_remove_group()
It's possible that the caller of sysfs_remove_group messed up and passed in an attribute group that was not really registered to this kobject. But don't panic for such a foolish error, spit out a warning about what happened, and continue on our way safely.
Cc: Roland Dreier <rdreier@cisco.com>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c
index 0871c3d..4779049 100644
--- a/fs/sysfs/group.c
+++ b/fs/sysfs/group.c
@@ -77,7 +77,12 @@
if (grp->name) {
sd = sysfs_get_dirent(dir_sd, grp->name);
- BUG_ON(!sd);
+ if (!sd) {
+ printk(KERN_WARNING "sysfs group %p not found for "
+ "kobject '%s'\n", grp, kobject_name(kobj));
+ WARN_ON(!sd);
+ return;
+ }
} else
sd = sysfs_get(dir_sd);