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watchdog: ib700wdt: Use platform_driver_probe

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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>
This commit is contained in:
Jean Delvare 2014-03-14 13:18:47 +01:00 committed by Wim Van Sebroeck
parent 78411be4c7
commit 996735ffd4
1 changed files with 9 additions and 12 deletions
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21
drivers/watchdog/ib700wdt.c
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@ -277,7 +277,7 @@ static struct miscdevice ibwdt_miscdev = {
* Init & exit routines
*/
static int ibwdt_probe(struct platform_device *dev)
static int __init ibwdt_probe(struct platform_device *dev)
{
int res;
@ -336,7 +336,6 @@ static void ibwdt_shutdown(struct platform_device *dev)
}
static struct platform_driver ibwdt_driver = {
.probe = ibwdt_probe,
.remove = ibwdt_remove,
.shutdown = ibwdt_shutdown,
.driver = {
@ -351,21 +350,19 @@ static int __init ibwdt_init(void)
pr_info("WDT driver for IB700 single board computer initialising\n");
err = platform_driver_register(&ibwdt_driver);
if (err)
return err;
ibwdt_platform_device = platform_device_register_simple(DRV_NAME,
-1, NULL, 0);
if (IS_ERR(ibwdt_platform_device)) {
err = PTR_ERR(ibwdt_platform_device);
goto unreg_platform_driver;
}
if (IS_ERR(ibwdt_platform_device))
return PTR_ERR(ibwdt_platform_device);
err = platform_driver_probe(&ibwdt_driver, ibwdt_probe);
if (err)
goto unreg_platform_device;
return 0;
unreg_platform_driver:
platform_driver_unregister(&ibwdt_driver);
unreg_platform_device:
platform_device_unregister(ibwdt_platform_device);
return err;
}