linux-kernel - [PATCH] move sgiwd93's probe function to .devinit.text

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Message-Id: <1247345591-22643-33-git-send-email-u.kleine-koenig@pengutronix.de>
Date:	Sat, 11 Jul 2009 22:53:01 +0200
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org
Cc:	Dmitri Vorobiev <dmitri.vorobiev@...ial.fi>,
	James Bottomley <James.Bottomley@...senPartnership.com>,
	Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	peter fuerst <post@...st.de>,
	Henrik Kretzschmar <henne@...htwindheim.de>
Subject: [PATCH] move sgiwd93's probe function to .devinit.text

A pointer to sgiwd93_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: Dmitri Vorobiev <dmitri.vorobiev@...ial.fi>
Cc: James Bottomley <James.Bottomley@...senPartnership.com>
Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Acked-by: Ralf Baechle <ralf@...ux-mips.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: peter fuerst <post@...st.de>
Cc: Henrik Kretzschmar <henne@...htwindheim.de>
---
 drivers/scsi/sgiwd93.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/scsi/sgiwd93.c b/drivers/scsi/sgiwd93.c
index 0807b26..fef0e3c 100644
--- a/drivers/scsi/sgiwd93.c
+++ b/drivers/scsi/sgiwd93.c
@@ -226,7 +226,7 @@ static struct scsi_host_template sgiwd93_template = {
 	.use_clustering		= DISABLE_CLUSTERING,
 };
 
-static int __init sgiwd93_probe(struct platform_device *pdev)
+static int __devinit sgiwd93_probe(struct platform_device *pdev)
 {
 	struct sgiwd93_platform_data *pd = pdev->dev.platform_data;
 	unsigned char *wdregs = pd->wdregs;
-- 
1.6.3.1

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