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-rw-r--r--target/linux/ar7/files/drivers/char/watchdog/ar7_wdt.c24
1 files changed, 11 insertions, 13 deletions
diff --git a/target/linux/ar7/files/drivers/char/watchdog/ar7_wdt.c b/target/linux/ar7/files/drivers/char/watchdog/ar7_wdt.c
index 2ae83e1cd1..cdaab8c3d3 100644
--- a/target/linux/ar7/files/drivers/char/watchdog/ar7_wdt.c
+++ b/target/linux/ar7/files/drivers/char/watchdog/ar7_wdt.c
@@ -1,7 +1,7 @@
/*
- * linux/drivers/char/ar7_wdt.c
+ * drivers/watchdog/ar7_wdt.c
*
- * Copyright (C) 2007 OpenWrt.org
+ * Copyright (C) 2007 Nicolas Thill <nico@openwrt.org>
* Copyright (c) 2005 Enrik Berkhan <Enrik.Berkhan@akk.org>
*
* Some code taken from:
@@ -184,7 +184,7 @@ static int ar7_wdt_open(struct inode *inode, struct file *file)
ar7_wdt_enable_wdt();
expect_close = 0;
- return 0;
+ return nonseekable_open(inode, file);
}
static int ar7_wdt_release(struct inode *inode, struct file *file)
@@ -218,9 +218,6 @@ static struct notifier_block ar7_wdt_notifier = {
static ssize_t ar7_wdt_write(struct file *file, const char *data,
size_t len, loff_t *ppos)
{
- if (*ppos != file->f_pos)
- return -ESPIPE;
-
/* check for a magic close character */
if (len) {
size_t i;
@@ -317,23 +314,24 @@ static int __init ar7_wdt_init(void)
sema_init(&open_semaphore, 1);
- rc = misc_register(&ar7_wdt_miscdev);
+ rc = register_reboot_notifier(&ar7_wdt_notifier);
if (rc) {
- printk(KERN_ERR DRVNAME ": unable to register misc device\n");
+ printk(KERN_ERR DRVNAME
+ ": unable to register reboot notifier\n");
goto out_alloc;
}
- rc = register_reboot_notifier(&ar7_wdt_notifier);
+ rc = misc_register(&ar7_wdt_miscdev);
if (rc) {
- printk(KERN_ERR DRVNAME
- ": unable to register reboot notifier\n");
+ printk(KERN_ERR DRVNAME ": unable to register misc device\n");
goto out_register;
}
goto out;
out_register:
- misc_deregister(&ar7_wdt_miscdev);
+ unregister_reboot_notifier(&ar7_wdt_notifier);
out_alloc:
+ iounmap(ar7_wdt);
release_mem_region(ar7_regs_wdt, sizeof(struct ar7_wdt));
out:
return rc;
@@ -341,8 +339,8 @@ out:
static void __exit ar7_wdt_cleanup(void)
{
- unregister_reboot_notifier(&ar7_wdt_notifier);
misc_deregister(&ar7_wdt_miscdev);
+ unregister_reboot_notifier(&ar7_wdt_notifier);
iounmap(ar7_wdt);
release_mem_region(ar7_regs_wdt, sizeof(struct ar7_wdt));
}