[WATCHDOG] at91rm9200_wdt.c: move probe function to .devinit.text

A pointer to at91wdt_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@pengutronix.de>
Cc: Andrew Victor <linux@maxim.org.za>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Ilpo Jarvinen <ilpo.jarvinen@helsinki.fi>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

diff --git a/drivers/watchdog/at91rm9200_wdt.c b/drivers/watchdog/at91rm9200_wdt.c
index e35d545..29e52c2 100644 (file)
--- a/drivers/watchdog/at91rm9200_wdt.c
+++ b/drivers/watchdog/at91rm9200_wdt.c
@@ -197,7 +197,7 @@ static struct miscdevice at91wdt_miscdev = {
        .fops           = &at91wdt_fops,
 };
 
-static int __init at91wdt_probe(struct platform_device *pdev)
+static int __devinit at91wdt_probe(struct platform_device *pdev)
 {
        int res;
 
@@ -214,7 +214,7 @@ static int __init at91wdt_probe(struct platform_device *pdev)
        return 0;
 }
 
-static int __exit at91wdt_remove(struct platform_device *pdev)
+static int __devexit at91wdt_remove(struct platform_device *pdev)
 {
        int res;
 
@@ -252,7 +252,7 @@ static int at91wdt_resume(struct platform_device *pdev)
 
 static struct platform_driver at91wdt_driver = {
        .probe          = at91wdt_probe,
-       .remove         = __exit_p(at91wdt_remove),
+       .remove         = __devexit_p(at91wdt_remove),
        .shutdown       = at91wdt_shutdown,
        .suspend        = at91wdt_suspend,
        .resume         = at91wdt_resume,