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

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Message-Id: <1247345591-22643-12-git-send-email-u.kleine-koenig@pengutronix.de>
Date:	Sat, 11 Jul 2009 22:52:40 +0200
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org
Cc:	Roel Kluin <roel.kluin@...il.com>,
	Krzysztof Helt <krzysztof.h1@...zta.fm>,
	Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Antonino Daplas <adaplas@....net>,
	Kaj-Michael Lang <milang@....org>,
	Martin Michlmayr <tbm@...ius.com>,
	Joshua Kinard <kumba@...too.org>
Subject: [PATCH] move gbefb's probe function to .devinit.text

A pointer to gbefb_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: Roel Kluin <roel.kluin@...il.com>
Cc: Krzysztof Helt <krzysztof.h1@...zta.fm>
Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Antonino Daplas <adaplas@....net>
Cc: Kaj-Michael Lang <milang@....org>
Cc: Martin Michlmayr <tbm@...ius.com>
Cc: Joshua Kinard <kumba@...too.org>
---
 drivers/video/gbefb.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/video/gbefb.c b/drivers/video/gbefb.c
index 1a83709..f30e6b7 100644
--- a/drivers/video/gbefb.c
+++ b/drivers/video/gbefb.c
@@ -1128,7 +1128,7 @@ static int __init gbefb_setup(char *options)
 	return 0;
 }
 
-static int __init gbefb_probe(struct platform_device *p_dev)
+static int __devinit gbefb_probe(struct platform_device *p_dev)
 {
 	int i, ret = 0;
 	struct fb_info *info;
-- 
1.6.3.1

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