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@xxxxxxx>
Cc: Wim Van Sebroeck <wim@xxxxxxxxx>
---
drivers/watchdog/advantechwdt.c | 21 +++++++++------------
1 file changed, 9 insertions(+), 12 deletions(-)
--- linux-3.14-rc6.orig/drivers/watchdog/advantechwdt.c 2014-01-20 03:40:07.000000000 +0100
+++ linux-3.14-rc6/drivers/watchdog/advantechwdt.c 2014-03-14 10:26:25.886315593 +0100
@@ -238,7 +238,7 @@ static struct miscdevice advwdt_miscdev
* Init & exit routines
*/
-static int advwdt_probe(struct platform_device *dev)
+static int __init advwdt_probe(struct platform_device *dev)
{
int ret;
@@ -299,7 +299,6 @@ static void advwdt_shutdown(struct platf
}
static struct platform_driver advwdt_driver = {
- .probe = advwdt_probe,
.remove = advwdt_remove,
.shutdown = advwdt_shutdown,
.driver = {
@@ -314,21 +313,19 @@ static int __init advwdt_init(void)
pr_info("WDT driver for Advantech single board computer initialising\n");
- err = platform_driver_register(&advwdt_driver);
- if (err)
- return err;
-
advwdt_platform_device = platform_device_register_simple(DRV_NAME,
-1, NULL, 0);
- if (IS_ERR(advwdt_platform_device)) {
- err = PTR_ERR(advwdt_platform_device);
- goto unreg_platform_driver;
- }
+ if (IS_ERR(advwdt_platform_device))
+ return PTR_ERR(advwdt_platform_device);
+
+ err = platform_driver_probe(&advwdt_driver, advwdt_probe);
+ if (err)
+ goto unreg_platform_device;
return 0;
-unreg_platform_driver:
- platform_driver_unregister(&advwdt_driver);
+unreg_platform_device:
+ platform_device_unregister(advwdt_platform_device);
return err;
}
--
Jean Delvare
SUSE L3 Support
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