From b0e0b4b5984ab1d59bc8569d28e499820b8ea8d8 Mon Sep 17 00:00:00 2001
From: Jean Delvare <jdelvare@suse.de>
Date: Fri, 14 Mar 2014 13:04:37 +0100
Subject: [PATCH] watchdog: acquirewdt: Use platform_driver_probe
Using platform_driver_probe instead of platform_driver_register has
two benefits:
* The driver will fail to load if device probing fails.
* The probe function can be marked __init.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
---
drivers/watchdog/acquirewdt.c | 21 +++++++++------------
1 file changed, 9 insertions(+), 12 deletions(-)
diff --git a/drivers/watchdog/acquirewdt.c b/drivers/watchdog/acquirewdt.c
index 5cf1621def9c..5614416f1032 100644
--- a/drivers/watchdog/acquirewdt.c
+++ b/drivers/watchdog/acquirewdt.c
@@ -239,7 +239,7 @@ static struct miscdevice acq_miscdev = {
* Init & exit routines
*/
-static int acq_probe(struct platform_device *dev)
+static int __init acq_probe(struct platform_device *dev)
{
int ret;
@@ -291,7 +291,6 @@ static void acq_shutdown(struct platform_device *dev)
}
static struct platform_driver acquirewdt_driver = {
- .probe = acq_probe,
.remove = acq_remove,
.shutdown = acq_shutdown,
.driver = {
@@ -306,20 +305,18 @@ static int __init acq_init(void)
pr_info("WDT driver for Acquire single board computer initialising\n");
- err = platform_driver_register(&acquirewdt_driver);
- if (err)
- return err;
-
acq_platform_device = platform_device_register_simple(DRV_NAME,
-1, NULL, 0);
- if (IS_ERR(acq_platform_device)) {
- err = PTR_ERR(acq_platform_device);
- goto unreg_platform_driver;
- }
+ if (IS_ERR(acq_platform_device))
+ return PTR_ERR(acq_platform_device);
+
+ err = platform_driver_probe(&acquirewdt_driver, acq_probe);
+ if (err)
+ goto unreg_platform_device;
return 0;
-unreg_platform_driver:
- platform_driver_unregister(&acquirewdt_driver);
+unreg_platform_device:
+ platform_device_unregister(acq_platform_device);
return err;
}
--
2.34.1