Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 23 insertions, 0 deletions

diff --git a/drivers/s390/cio/cio_debugfs.c b/drivers/s390/cio/cio_debugfs.c
new file mode 100644
index 0000000000..0a3656fb5a
--- /dev/null
+++ b/drivers/s390/cio/cio_debugfs.c
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *   S/390 common I/O debugfs interface
+ *
+ *    Copyright IBM Corp. 2021
+ *    Author(s): Vineeth Vijayan <vneethv@linux.ibm.com>
+ */
+
+#include <linux/debugfs.h>
+#include "cio_debug.h"
+
+struct dentry *cio_debugfs_dir;
+
+/* Create the debugfs directory for CIO under the arch_debugfs_dir
+ * i.e /sys/kernel/debug/s390/cio
+ */
+static int __init cio_debugfs_init(void)
+{
+	cio_debugfs_dir = debugfs_create_dir("cio", arch_debugfs_dir);
+
+	return 0;
+}
+subsys_initcall(cio_debugfs_init);