linux-kernel - [PATCH] move vga16fb's probe function to .devinit.text

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Message-Id: <1247345591-22643-41-git-send-email-u.kleine-koenig@pengutronix.de>
Date:	Sat, 11 Jul 2009 22:53:09 +0200
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org
Cc:	Krzysztof Helt <krzysztof.h1@...pl>, Roel Kluin <12o3l@...cali.nl>,
	Antonino Daplas <adaplas@....net>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] move vga16fb's probe function to .devinit.text

A pointer to vga16fb_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: Krzysztof Helt <krzysztof.h1@...pl>
Cc: Roel Kluin <12o3l@...cali.nl>
Cc: Antonino Daplas <adaplas@....net>
Cc: Andrew Morton <akpm@...ux-foundation.org>
---
 drivers/video/vga16fb.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/video/vga16fb.c b/drivers/video/vga16fb.c
index 5b29389..76d8dae 100644
--- a/drivers/video/vga16fb.c
+++ b/drivers/video/vga16fb.c
@@ -1293,7 +1293,7 @@ static int vga16fb_setup(char *options)
 }
 #endif
 
-static int __init vga16fb_probe(struct platform_device *dev)
+static int __devinit vga16fb_probe(struct platform_device *dev)
 {
 	struct fb_info *info;
 	struct vga16fb_par *par;
-- 
1.6.3.1

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