Patch "NTB: ntb_transport: fix debugfs_remove_recursive" has been added to the 4.4-stable tree

Patch "NTB: ntb_transport: fix debugfs_remove_recursive" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    NTB: ntb_transport: fix debugfs_remove_recursive

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     ntb-ntb_transport-fix-debugfs_remove_recursive.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From dd62245e73de9138333cb0e7a42c8bc1215c3ce6 Mon Sep 17 00:00:00 2001
From: Allen Hubbe <Allen.Hubbe@dell.com>
Date: Tue, 27 Dec 2016 17:57:04 -0500
Subject: NTB: ntb_transport: fix debugfs_remove_recursive

From: Allen Hubbe <Allen.Hubbe@dell.com>

commit dd62245e73de9138333cb0e7a42c8bc1215c3ce6 upstream.

The call to debugfs_remove_recursive(qp->debugfs_dir) of the sub-level
directory must not be later than
debugfs_remove_recursive(nt_debugfs_dir) of the top-level directory.
Otherwise, the sub-level directory will not exist, and it would be
invalid (panic) to attempt to remove it.  This removes the top-level
directory last, after sub-level directories have been cleaned up.

Signed-off-by: Allen Hubbe <Allen.Hubbe@dell.com>
Fixes: e26a5843f ("NTB: Split ntb_hw_intel and ntb_transport drivers")
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/ntb/ntb_transport.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/ntb/ntb_transport.c
+++ b/drivers/ntb/ntb_transport.c
@@ -2082,9 +2082,8 @@ module_init(ntb_transport_init);
 
 static void __exit ntb_transport_exit(void)
 {
-	debugfs_remove_recursive(nt_debugfs_dir);
-
 	ntb_unregister_client(&ntb_transport_client);
 	bus_unregister(&ntb_transport_bus);
+	debugfs_remove_recursive(nt_debugfs_dir);
 }
 module_exit(ntb_transport_exit);


Patches currently in stable-queue which might be from Allen.Hubbe@dell.com are

queue-4.4/ntb-ntb_transport-fix-debugfs_remove_recursive.patch
queue-4.4/ntb_transport-pick-an-unused-queue.patch