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

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Message-Id: <1247345591-22643-1-git-send-email-u.kleine-koenig@pengutronix.de>
Date:	Sat, 11 Jul 2009 22:52:29 +0200
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org
Cc:	Christoph Hellwig <hch@....de>, Antonino Daplas <adaplas@....net>,
	linux-fbdev-devel@...ts.sourceforge.net,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] move acornfb's probe function to .devinit.text

A pointer to acornfb_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: Christoph Hellwig <hch@....de>
Cc: Antonino Daplas <adaplas@....net>
Cc: linux-fbdev-devel@...ts.sourceforge.net
Cc: Andrew Morton <akpm@...ux-foundation.org>
---
 drivers/video/acornfb.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/video/acornfb.c b/drivers/video/acornfb.c
index 0bcc59e..43d7d50 100644
--- a/drivers/video/acornfb.c
+++ b/drivers/video/acornfb.c
@@ -1221,7 +1221,7 @@ free_unused_pages(unsigned int virtual_start, unsigned int virtual_end)
 	printk("acornfb: freed %dK memory\n", mb_freed);
 }
 
-static int __init acornfb_probe(struct platform_device *dev)
+static int __devinit acornfb_probe(struct platform_device *dev)
 {
 	unsigned long size;
 	u_int h_sync, v_sync;
-- 
1.6.3.1

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