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112 lines
3.2 KiB
Diff
112 lines
3.2 KiB
Diff
From 906d7a5cfeda508e7361f021605579a00cd82815 Mon Sep 17 00:00:00 2001
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From: Pratyush Anand <panand@redhat.com>
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Date: Thu, 17 Dec 2015 17:53:58 +0530
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Subject: watchdog: Use static struct class watchdog_class in stead of pointer
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We need few sysfs attributes to know different status of a watchdog device.
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To do that, we need to associate .dev_groups with watchdog_class. So
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convert it from pointer to static.
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Putting this static struct in watchdog_dev.c, so that static device
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attributes defined in that file can be attached to it.
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Signed-off-by: Pratyush Anand <panand@redhat.com>
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Suggested-by: Guenter Roeck <linux@roeck-us.net>
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Reviewed-by: Guenter Roeck <linux@roeck-us.net>
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Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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---
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drivers/watchdog/watchdog_core.c | 15 ++-------------
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drivers/watchdog/watchdog_core.h | 2 +-
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drivers/watchdog/watchdog_dev.c | 26 ++++++++++++++++++++++----
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3 files changed, 25 insertions(+), 18 deletions(-)
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--- a/drivers/watchdog/watchdog_core.c
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+++ b/drivers/watchdog/watchdog_core.c
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@@ -370,19 +370,9 @@ static int __init watchdog_deferred_regi
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static int __init watchdog_init(void)
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{
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- int err;
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-
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- watchdog_class = class_create(THIS_MODULE, "watchdog");
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- if (IS_ERR(watchdog_class)) {
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- pr_err("couldn't create class\n");
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+ watchdog_class = watchdog_dev_init();
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+ if (IS_ERR(watchdog_class))
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return PTR_ERR(watchdog_class);
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- }
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-
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- err = watchdog_dev_init();
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- if (err < 0) {
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- class_destroy(watchdog_class);
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- return err;
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- }
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watchdog_deferred_registration();
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return 0;
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@@ -391,7 +381,6 @@ static int __init watchdog_init(void)
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static void __exit watchdog_exit(void)
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{
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watchdog_dev_exit();
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- class_destroy(watchdog_class);
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ida_destroy(&watchdog_ida);
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}
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--- a/drivers/watchdog/watchdog_core.h
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+++ b/drivers/watchdog/watchdog_core.h
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@@ -33,5 +33,5 @@
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*/
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extern int watchdog_dev_register(struct watchdog_device *);
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extern int watchdog_dev_unregister(struct watchdog_device *);
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-extern int __init watchdog_dev_init(void);
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+extern struct class * __init watchdog_dev_init(void);
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extern void __exit watchdog_dev_exit(void);
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--- a/drivers/watchdog/watchdog_dev.c
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+++ b/drivers/watchdog/watchdog_dev.c
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@@ -581,18 +581,35 @@ int watchdog_dev_unregister(struct watch
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return 0;
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}
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+static struct class watchdog_class = {
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+ .name = "watchdog",
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+ .owner = THIS_MODULE,
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+};
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+
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/*
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* watchdog_dev_init: init dev part of watchdog core
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*
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* Allocate a range of chardev nodes to use for watchdog devices
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*/
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-int __init watchdog_dev_init(void)
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+struct class * __init watchdog_dev_init(void)
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{
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- int err = alloc_chrdev_region(&watchdog_devt, 0, MAX_DOGS, "watchdog");
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- if (err < 0)
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+ int err;
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+
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+ err = class_register(&watchdog_class);
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+ if (err < 0) {
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+ pr_err("couldn't register class\n");
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+ return ERR_PTR(err);
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+ }
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+
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+ err = alloc_chrdev_region(&watchdog_devt, 0, MAX_DOGS, "watchdog");
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+ if (err < 0) {
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pr_err("watchdog: unable to allocate char dev region\n");
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- return err;
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+ class_unregister(&watchdog_class);
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+ return ERR_PTR(err);
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+ }
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+
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+ return &watchdog_class;
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}
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/*
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@@ -604,4 +621,5 @@ int __init watchdog_dev_init(void)
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void __exit watchdog_dev_exit(void)
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{
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unregister_chrdev_region(watchdog_devt, MAX_DOGS);
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+ class_unregister(&watchdog_class);
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}
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