linux-kernel - [PATCH] fs: debugfs: add forward declaration for struct device type

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Date:	Sun, 30 Nov 2014 16:31:21 +0100
From:	Arend van Spriel <arend@...adcom.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:	<linux-kernel@...r.kernel.org>,
	Arend van Spriel <arend@...adcom.com>
Subject: [PATCH] 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@...adcom.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@...el.com>
Signed-off-by: Arend van Spriel <arend@...adcom.com>
---
 include/linux/debugfs.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index 4bbe2ac..e3e9f31 100644
--- 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 {
-- 
1.9.1

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