linux-kernel - [PATCH 36/62] auxdisplay: move cfag12864bfb's probe function to .devinit.text

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Message-Id: <1267572541-410-36-git-send-email-gregkh@suse.de>
Date:	Tue,  2 Mar 2010 15:28:35 -0800
From:	Greg Kroah-Hartman <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org
Cc:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Avuton Olrich <avuton@...il.com>,
	Antonino Daplas <adaplas@...il.com>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [PATCH 36/62] auxdisplay: move cfag12864bfb's probe function to .devinit.text

From: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>

A pointer to cfag12864bfb_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: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Avuton Olrich <avuton@...il.com>
Cc: Antonino Daplas <adaplas@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 drivers/auxdisplay/cfag12864bfb.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/auxdisplay/cfag12864bfb.c b/drivers/auxdisplay/cfag12864bfb.c
index fe3a865..b0ca5a4 100644
--- a/drivers/auxdisplay/cfag12864bfb.c
+++ b/drivers/auxdisplay/cfag12864bfb.c
@@ -81,7 +81,7 @@ static struct fb_ops cfag12864bfb_ops = {
 	.fb_mmap = cfag12864bfb_mmap,
 };
 
-static int __init cfag12864bfb_probe(struct platform_device *device)
+static int __devinit cfag12864bfb_probe(struct platform_device *device)
 {
 	int ret = -EINVAL;
  	struct fb_info *info = framebuffer_alloc(0, &device->dev);
-- 
1.7.0.1

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