fs: debugfs: add forward declaration for struct device type

The function debugfs_create_devm_seqfile() has a parameter of type
struct device pointer. This type needs to be forward declared to
avoid compilation issues on certain architectures and/or kernel
configurations. The function was introduced with:

  commit 98210b7f73f1db182bd9a558a031093cd166e907
  Author: Arend van Spriel <arend@broadcom.com>
  Date:   Sun Nov 9 11:31:58 2014 +0100

     debugfs: add helper function to create device related seq_file

The reported build failure for sparc64 architecture was:

  make.cross ARCH=sparc64

All warnings:

   In file included from fs/debugfs/file.c:21:0:
   include/linux/debugfs.h:105:10: warning: 'struct device' declared
   inside parameter list
             void *data));
             ^

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index 4bbe2ace972ad5781a451f1f9f47bec470177e29..e3e9f31f91d2b2d57c05f94eefe4d52f4d0a60f9 100644 (file)
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -20,6 +20,7 @@
 
 #include <linux/types.h>
 
+struct device;
 struct file_operations;
 
 struct debugfs_blob_wrapper {