linux-kernel - [PATCH] move omap24xxcam's probe function to .devinit.text

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Message-Id: <1247345591-22643-22-git-send-email-u.kleine-koenig@pengutronix.de>
Date:	Sat, 11 Jul 2009 22:52:50 +0200
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org
Cc:	Hans Verkuil <hverkuil@...all.nl>,
	Mauro Carvalho Chehab <mchehab@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] move omap24xxcam's probe function to .devinit.text

A pointer to omap24xxcam_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>
Acked-by: Sakari Ailus <sakari.ailus@...well.research.nokia.com>
Acked-by: Trilok Soni <soni.trilok@...il.com>
Cc: Hans Verkuil <hverkuil@...all.nl>
Cc: Mauro Carvalho Chehab <mchehab@...hat.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
---
 drivers/media/video/omap24xxcam.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/media/video/omap24xxcam.c b/drivers/media/video/omap24xxcam.c
index 5fc4ac0..3fc84b7 100644
--- a/drivers/media/video/omap24xxcam.c
+++ b/drivers/media/video/omap24xxcam.c
@@ -1737,7 +1737,7 @@ static struct v4l2_int_device omap24xxcam = {
  *
  */
 
-static int __init omap24xxcam_probe(struct platform_device *pdev)
+static int __devinit omap24xxcam_probe(struct platform_device *pdev)
 {
 	struct omap24xxcam_device *cam;
 	struct resource *mem;
-- 
1.6.3.1

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