From d6b469d915ae348b3bb8b25034063d6870ff4a00 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Fri, 11 May 2012 12:00:20 +0200 Subject: watchdog: create all the proper device files Create the watchdog class and it's associated devices. Signed-off-by: Alan Cox Signed-off-by: Hans de Goede Signed-off-by: Wim Van Sebroeck --- drivers/watchdog/watchdog_core.c | 34 ++++++++++++++++++++++++++++++++-- drivers/watchdog/watchdog_dev.c | 1 + 2 files changed, 33 insertions(+), 2 deletions(-) (limited to 'drivers/watchdog') diff --git a/drivers/watchdog/watchdog_core.c b/drivers/watchdog/watchdog_core.c index 5f9879369003..86a57673abf9 100644 --- a/drivers/watchdog/watchdog_core.c +++ b/drivers/watchdog/watchdog_core.c @@ -35,10 +35,12 @@ #include /* For watchdog specific items */ #include /* For __init/__exit/... */ #include /* For ida_* macros */ +#include /* For IS_ERR macros */ #include "watchdog_core.h" /* For watchdog_dev_register/... */ static DEFINE_IDA(watchdog_ida); +static struct class *watchdog_class; /** * watchdog_register_device() - register a watchdog device @@ -52,7 +54,7 @@ static DEFINE_IDA(watchdog_ida); */ int watchdog_register_device(struct watchdog_device *wdd) { - int ret, id; + int ret, id, devno; if (wdd == NULL || wdd->info == NULL || wdd->ops == NULL) return -EINVAL; @@ -101,6 +103,16 @@ int watchdog_register_device(struct watchdog_device *wdd) } } + devno = wdd->cdev.dev; + wdd->dev = device_create(watchdog_class, wdd->parent, devno, + NULL, "watchdog%d", wdd->id); + if (IS_ERR(wdd->dev)) { + watchdog_dev_unregister(wdd); + ida_simple_remove(&watchdog_ida, id); + ret = PTR_ERR(wdd->dev); + return ret; + } + return 0; } EXPORT_SYMBOL_GPL(watchdog_register_device); @@ -115,6 +127,7 @@ EXPORT_SYMBOL_GPL(watchdog_register_device); void watchdog_unregister_device(struct watchdog_device *wdd) { int ret; + int devno = wdd->cdev.dev; if (wdd == NULL) return; @@ -122,18 +135,35 @@ void watchdog_unregister_device(struct watchdog_device *wdd) ret = watchdog_dev_unregister(wdd); if (ret) pr_err("error unregistering /dev/watchdog (err=%d)\n", ret); + device_destroy(watchdog_class, devno); ida_simple_remove(&watchdog_ida, wdd->id); + wdd->dev = NULL; } EXPORT_SYMBOL_GPL(watchdog_unregister_device); static int __init watchdog_init(void) { - return watchdog_dev_init(); + int err; + + watchdog_class = class_create(THIS_MODULE, "watchdog"); + if (IS_ERR(watchdog_class)) { + pr_err("couldn't create class\n"); + return PTR_ERR(watchdog_class); + } + + err = watchdog_dev_init(); + if (err < 0) { + class_destroy(watchdog_class); + return err; + } + + return 0; } static void __exit watchdog_exit(void) { watchdog_dev_exit(); + class_destroy(watchdog_class); ida_destroy(&watchdog_ida); } diff --git a/drivers/watchdog/watchdog_dev.c b/drivers/watchdog/watchdog_dev.c index 3b22582bcb04..1f011f2d6e48 100644 --- a/drivers/watchdog/watchdog_dev.c +++ b/drivers/watchdog/watchdog_dev.c @@ -365,6 +365,7 @@ int watchdog_dev_register(struct watchdog_device *watchdog) int err, devno; if (watchdog->id == 0) { + watchdog_miscdev.parent = watchdog->parent; err = misc_register(&watchdog_miscdev); if (err != 0) { pr_err("%s: cannot register miscdev on minor=%d (err=%d).\n", -- cgit v1.2.3