linux-kernel - [PATCH] x86/moorestown: change to __devinit in order to suppress warning

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Date:	Thu, 31 May 2012 23:20:25 +0200
From:	Sebastian Andrzej Siewior <sebastian@...akpoint.cc>
To:	x86@...nel.org, Feng Tang <feng.tang@...el.com>
Cc:	Alan Cox <alan@...ux.intel.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] x86/moorestown: change to __devinit in order to suppress
  warning

The allmodconfig hits:

|WARNING: vmlinux.o(.text+0x6553d): Section mismatch in reference from the function intel_scu_devices_create() to the function .devinit.text: spi_register_board_info()
|The function intel_scu_devices_create() references
|the function __devinit spi_register_board_info().
|This is often because intel_scu_devices_create lacks a __devinit
|annotation or the annotation of spi_register_board_info is wrong.
|
|WARNING: vmlinux.o(.text+0x655f1): Section mismatch in reference from the function intel_scu_devices_create() to the function .init.text:i2c _register_board_info()
|The function intel_scu_devices_create() references
|the function __init i2c_register_board_info().
|This is often because intel_scu_devices_create lacks a __init
|annotation or the annotation of i2c_register_board_info is wrong.

This patch marks intel_scu_devices_create() as devinit because it calls
a devinit function, spi_register_board_info().
The second problem with i2c_register_board_info() does not go away and
should crash once build as a module because i2c_register_board_info() is
long gone. Therefore this function should not be used from a module.
Going through all the code here makes me ask, why don't use DT here for
all that I2C and friends?

Signed-off-by: Sebastian Andrzej Siewior <sebastian@...akpoint.cc>
---
And I looked like this while going over the code:
   http://download.breakpoint.cc/meme/moorestown_no_dt.png

 arch/x86/platform/mrst/mrst.c        |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/platform/mrst/mrst.c b/arch/x86/platform/mrst/mrst.c
index e31bcd8..fd41a92 100644
--- a/arch/x86/platform/mrst/mrst.c
+++ b/arch/x86/platform/mrst/mrst.c
@@ -782,7 +782,7 @@ BLOCKING_NOTIFIER_HEAD(intel_scu_notifier);
 EXPORT_SYMBOL_GPL(intel_scu_notifier);

 /* Called by IPC driver */
-void intel_scu_devices_create(void)
+void __devinit intel_scu_devices_create(void)
 {
 	int i;

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