linux-kernel - [PATCH 1/1] devtmpfs: Fix section mismatch warning

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Message-Id: <1313894655-3783-1-git-send-email-harvey.huawei.yang@gmail.com>
Date:	Sun, 21 Aug 2011 10:44:15 +0800
From:	Harvey Yang <harvey.huawei.yang@...il.com>
To:	Greg Kroah-Hartman <gregkh@...e.de>
Cc:	linux-kernel@...r.kernel.org,
	Harvey Yang <harvey.huawei.yang@...il.com>
Subject: [PATCH 1/1] devtmpfs: Fix section mismatch warning

drivers/base/built-in.o(.text+0xe554): Section mismatch in reference f
rom the function devtmpfsd() to the variable .init.data:setup_done
The function devtmpfsd() references
the variable __initdata setup_done.
This is often because devtmpfsd lacks a __initdata
annotation or the annotation of setup_done is wrong.

"setup_done" is not used after init. but putting it into initdata section leads a section mismatch warning, so initialize it dynamically in __init function.

Signed-off-by: Harvey Yang <harvey.huawei.yang@...il.com>
---
 drivers/base/devtmpfs.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c
index 33e1bed..d26b47b 100644
--- a/drivers/base/devtmpfs.c
+++ b/drivers/base/devtmpfs.c
@@ -376,7 +376,6 @@ int devtmpfs_mount(const char *mntdir)
 	return err;
 }
 
-static __initdata DECLARE_COMPLETION(setup_done);
 
 static int handle(const char *name, mode_t mode, struct device *dev)
 {
@@ -430,6 +429,9 @@ out:
  */
 int __init devtmpfs_init(void)
 {
+	struct compiletion setup_done;
+	init_compiletion(&setup_done);
+
 	int err = register_filesystem(&dev_fs_type);
 	if (err) {
 		printk(KERN_ERR "devtmpfs: unable to register devtmpfs "
-- 
1.7.2.5

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