linux-kernel - [PATCH] move efifb's probe function to .devinit.text

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Message-Id: <1247345591-22643-9-git-send-email-u.kleine-koenig@pengutronix.de>
Date:	Sat, 11 Jul 2009 22:52:37 +0200
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org
Cc:	Peter Jones <pjones@...hat.com>,
	Krzysztof Helt <krzysztof.h1@...zta.fm>,
	Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>,
	Jaya Kumar <jayakumar.lkml@...il.com>,
	Ralf Baechle <ralf@...ux-mips.org>,
	"Maciej W. Rozycki" <macro@...ux-mips.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Chandramouli Narayanan <mouli@...ux.intel.com>,
	Huang Ying <ying.huang@...el.com>
Subject: [PATCH] move efifb's probe function to .devinit.text

A pointer to efifb_probe is passed to the core via
platform_driver_register and so the function must not disappear when the
.init sections are discarded.  Otherwise (if also having HOTPLUG=y)
unbinding and binding a device to the driver via sysfs will result in an
oops as does a device being registered late.

An alternative to this patch is using platform_driver_probe instead of
platform_driver_register plus removing the pointer to the probe function
from the struct platform_driver.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Cc: Peter Jones <pjones@...hat.com>
Cc: Krzysztof Helt <krzysztof.h1@...zta.fm>
Cc: Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>
Cc: Jaya Kumar <jayakumar.lkml@...il.com>
Cc: Ralf Baechle <ralf@...ux-mips.org>
Cc: Maciej W. Rozycki <macro@...ux-mips.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Chandramouli Narayanan <mouli@...ux.intel.com>
Cc: Huang Ying <ying.huang@...el.com>
---
 drivers/video/efifb.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/video/efifb.c b/drivers/video/efifb.c
index eb12182..2161f21 100644
--- a/drivers/video/efifb.c
+++ b/drivers/video/efifb.c
@@ -201,7 +201,7 @@ static int __init efifb_setup(char *options)
 	return 0;
 }
 
-static int __init efifb_probe(struct platform_device *dev)
+static int __devinit efifb_probe(struct platform_device *dev)
 {
 	struct fb_info *info;
 	int err;
-- 
1.6.3.1

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