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

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Message-Id: <1231799107-20136-36-git-send-email-u.kleine-koenig@pengutronix.de>
Date:	Mon, 12 Jan 2009 23:24:41 +0100
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	linux-kernel@...r.kernel.org
Subject: [PATCH] move omap_rng's probe function to .devinit.text

A pointer to omap_rng_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>
---
 drivers/char/hw_random/omap-rng.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/char/hw_random/omap-rng.c b/drivers/char/hw_random/omap-rng.c
index d4e7dca..3f14506 100644
--- a/drivers/char/hw_random/omap-rng.c
+++ b/drivers/char/hw_random/omap-rng.c
@@ -89,7 +89,7 @@ static struct hwrng omap_rng_ops = {
 	.data_read	= omap_rng_data_read,
 };
 
-static int __init omap_rng_probe(struct platform_device *pdev)
+static int __devinit omap_rng_probe(struct platform_device *pdev)
 {
 	struct resource *res, *mem;
 	int ret;
-- 
1.5.6.5

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