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

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Message-Id: <1247345591-22643-7-git-send-email-u.kleine-koenig@pengutronix.de>
Date:	Sat, 11 Jul 2009 22:52:35 +0200
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org
Cc:	Yoichi Yuasa <yoichi_yuasa@...peaks.co.jp>,
	Krzysztof Helt <krzysztof.h1@...zta.fm>,
	Antonino Daplas <adaplas@....net>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] move cobalt-lcd's probe function to .devinit.text

A pointer to cobalt_lcdfb_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: Yoichi Yuasa <yoichi_yuasa@...peaks.co.jp>
Cc: Krzysztof Helt <krzysztof.h1@...zta.fm>
Cc: Antonino Daplas <adaplas@....net>
Acked-by: Ralf Baechle <ralf@...ux-mips.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
---
 drivers/video/cobalt_lcdfb.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/video/cobalt_lcdfb.c b/drivers/video/cobalt_lcdfb.c
index 108b89e..5eb61b5 100644
--- a/drivers/video/cobalt_lcdfb.c
+++ b/drivers/video/cobalt_lcdfb.c
@@ -287,7 +287,7 @@ static struct fb_ops cobalt_lcd_fbops = {
 	.fb_cursor	= cobalt_lcdfb_cursor,
 };
 
-static int __init cobalt_lcdfb_probe(struct platform_device *dev)
+static int __devinit cobalt_lcdfb_probe(struct platform_device *dev)
 {
 	struct fb_info *info;
 	struct resource *res;
-- 
1.6.3.1

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