[Patch] Remove debugfs entries on bad path

[Stefan Raspl <raspl@linux.vnet.ibm.com>]

debugfs directory entries for devices are not removed on bad path.
If so, subsequent attempts to start blktrace on the respective
devices will not succeed due to existing directories.

Signed-off-by: Stefan Raspl <stefan.raspl@linux.vnet.ibm.com>

---
 kernel/trace/blktrace.c |    1 +
 1 file changed, 1 insertion(+)

--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -262,6 +262,7 @@ static void blk_trace_free(struct blk_tr
 {
 	debugfs_remove(bt->msg_file);
 	debugfs_remove(bt->dropped_file);
+	debugfs_remove(bt->dir);
 	relay_close(bt->rchan);
 	free_percpu(bt->sequence);
 	free_percpu(bt->msg_data);