linux-kernel - [PATCH] move leds-clevo-mail's probe function to .devinit.text

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Message-Id: <1247345591-22643-6-git-send-email-u.kleine-koenig@pengutronix.de>
Date:	Sat, 11 Jul 2009 22:52:34 +0200
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org
Cc:	Richard Purdie <rpurdie@...ux.intel.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Márton Németh <nm127@...email.hu>
Subject: [PATCH] move leds-clevo-mail's probe function to .devinit.text

A pointer to clevo_mail_led_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: Richard Purdie <rpurdie@...ux.intel.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Márton Németh <nm127@...email.hu>
---
 drivers/leds/leds-clevo-mail.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/leds/leds-clevo-mail.c b/drivers/leds/leds-clevo-mail.c
index 1813c84..8ee83ce 100644
--- a/drivers/leds/leds-clevo-mail.c
+++ b/drivers/leds/leds-clevo-mail.c
@@ -145,7 +145,7 @@ static struct led_classdev clevo_mail_led = {
 	.flags			= LED_CORE_SUSPENDRESUME,
 };
 
-static int __init clevo_mail_led_probe(struct platform_device *pdev)
+static int __devinit clevo_mail_led_probe(struct platform_device *pdev)
 {
 	return led_classdev_register(&pdev->dev, &clevo_mail_led);
 }
-- 
1.6.3.1

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