linux-kernel - [PATCH] move s3c241xfb's probe function to .devinit.text

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Message-Id: <1247345591-22643-28-git-send-email-u.kleine-koenig@pengutronix.de>
Date:	Sat, 11 Jul 2009 22:52:56 +0200
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org
Cc:	Russell King <rmk+kernel@....linux.org.uk>,
	Ben Dooks <ben-linux@...ff.org>,
	Arnaud Patard <arnaud.patard@...-net.org>,
	Krzysztof Helt <krzysztof.h1@...pl>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Antonino Daplas <adaplas@....net>,
	Vincent Sanders <vince@...tec.co.uk>
Subject: [PATCH] move s3c241xfb's probe function to .devinit.text

Pointers to s3c2410fb_probe and s3c2412fb_probe are passed to the core
via platform_driver_register and so the functions must not disappear
when the .init sections are discarded.  Otherwise (if also having
HOTPLUG=y) unbinding and binding a device to one of the drivers 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: Russell King <rmk+kernel@....linux.org.uk>
Cc: Ben Dooks <ben-linux@...ff.org>
Cc: Arnaud Patard <arnaud.patard@...-net.org>
Cc: Krzysztof Helt <krzysztof.h1@...pl>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Antonino Daplas <adaplas@....net>
Cc: Vincent Sanders <vince@...tec.co.uk>
---
 drivers/video/s3c2410fb.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/video/s3c2410fb.c b/drivers/video/s3c2410fb.c
index 7da0027..b8269bd 100644
--- a/drivers/video/s3c2410fb.c
+++ b/drivers/video/s3c2410fb.c
@@ -1002,12 +1002,12 @@ dealloc_fb:
 	return ret;
 }
 
-static int __init s3c2410fb_probe(struct platform_device *pdev)
+static int __devinit s3c2410fb_probe(struct platform_device *pdev)
 {
 	return s3c24xxfb_probe(pdev, DRV_S3C2410);
 }
 
-static int __init s3c2412fb_probe(struct platform_device *pdev)
+static int __devinit s3c2412fb_probe(struct platform_device *pdev)
 {
 	return s3c24xxfb_probe(pdev, DRV_S3C2412);
 }
-- 
1.6.3.1

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