diff options
Diffstat (limited to 'drivers/watchdog/sbc_epx_c3.c')
| -rw-r--r-- | drivers/watchdog/sbc_epx_c3.c | 59 |
1 files changed, 29 insertions, 30 deletions
diff --git a/drivers/watchdog/sbc_epx_c3.c b/drivers/watchdog/sbc_epx_c3.c index 82cbd8809a6..a1c502e0d8e 100644 --- a/drivers/watchdog/sbc_epx_c3.c +++ b/drivers/watchdog/sbc_epx_c3.c @@ -10,9 +10,11 @@ * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * - * based on softdog.c by Alan Cox <alan@redhat.com> + * based on softdog.c by Alan Cox <alan@lxorguk.ukuu.org.uk> */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/types.h> @@ -25,17 +27,17 @@ #include <linux/reboot.h> #include <linux/init.h> #include <linux/ioport.h> -#include <asm/uaccess.h> -#include <asm/io.h> +#include <linux/uaccess.h> +#include <linux/io.h> -#define PFX "epx_c3: " static int epx_c3_alive; #define WATCHDOG_TIMEOUT 1 /* 1 sec default timeout */ -static int nowayout = WATCHDOG_NOWAYOUT; -module_param(nowayout, int, 0); -MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); +static bool nowayout = WATCHDOG_NOWAYOUT; +module_param(nowayout, bool, 0); +MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" + __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); #define EPXC3_WATCHDOG_CTL_REG 0x1ee /* write 1 to enable, 0 to disable */ #define EPXC3_WATCHDOG_PET_REG 0x1ef /* write anything to pet once enabled */ @@ -50,7 +52,7 @@ static void epx_c3_stop(void) outb(0, EPXC3_WATCHDOG_CTL_REG); - printk(KERN_INFO PFX "Stopped watchdog timer.\n"); + pr_info("Stopped watchdog timer\n"); } static void epx_c3_pet(void) @@ -74,7 +76,7 @@ static int epx_c3_open(struct inode *inode, struct file *file) epx_c3_pet(); epx_c3_alive = 1; - printk(KERN_INFO "Started watchdog timer.\n"); + pr_info("Started watchdog timer\n"); return nonseekable_open(inode, file); } @@ -100,14 +102,13 @@ static ssize_t epx_c3_write(struct file *file, const char __user *data, return len; } -static int epx_c3_ioctl(struct inode *inode, struct file *file, - unsigned int cmd, unsigned long arg) +static long epx_c3_ioctl(struct file *file, unsigned int cmd, + unsigned long arg) { int options, retval = -EINVAL; int __user *argp = (void __user *)arg; - static struct watchdog_info ident = { - .options = WDIOF_KEEPALIVEPING | - WDIOF_MAGICCLOSE, + static const struct watchdog_info ident = { + .options = WDIOF_KEEPALIVEPING, .firmware_version = 0, .identity = "Winsystems EPX-C3 H/W Watchdog", }; @@ -120,11 +121,6 @@ static int epx_c3_ioctl(struct inode *inode, struct file *file, case WDIOC_GETSTATUS: case WDIOC_GETBOOTSTATUS: return put_user(0, argp); - case WDIOC_KEEPALIVE: - epx_c3_pet(); - return 0; - case WDIOC_GETTIMEOUT: - return put_user(WATCHDOG_TIMEOUT, argp); case WDIOC_SETOPTIONS: if (get_user(options, argp)) return -EFAULT; @@ -140,6 +136,11 @@ static int epx_c3_ioctl(struct inode *inode, struct file *file, } return retval; + case WDIOC_KEEPALIVE: + epx_c3_pet(); + return 0; + case WDIOC_GETTIMEOUT: + return put_user(WATCHDOG_TIMEOUT, argp); default: return -ENOTTY; } @@ -158,7 +159,7 @@ static const struct file_operations epx_c3_fops = { .owner = THIS_MODULE, .llseek = no_llseek, .write = epx_c3_write, - .ioctl = epx_c3_ioctl, + .unlocked_ioctl = epx_c3_ioctl, .open = epx_c3_open, .release = epx_c3_release, }; @@ -173,9 +174,6 @@ static struct notifier_block epx_c3_notifier = { .notifier_call = epx_c3_notify_sys, }; -static const char banner[] __initdata = - KERN_INFO PFX "Hardware Watchdog Timer for Winsystems EPX-C3 SBC: 0.1\n"; - static int __init watchdog_init(void) { int ret; @@ -185,20 +183,19 @@ static int __init watchdog_init(void) ret = register_reboot_notifier(&epx_c3_notifier); if (ret) { - printk(KERN_ERR PFX "cannot register reboot notifier " - "(err=%d)\n", ret); + pr_err("cannot register reboot notifier (err=%d)\n", ret); goto out; } ret = misc_register(&epx_c3_miscdev); if (ret) { - printk(KERN_ERR PFX "cannot register miscdev on minor=%d " - "(err=%d)\n", WATCHDOG_MINOR, ret); + pr_err("cannot register miscdev on minor=%d (err=%d)\n", + WATCHDOG_MINOR, ret); unregister_reboot_notifier(&epx_c3_notifier); goto out; } - printk(banner); + pr_info("Hardware Watchdog Timer for Winsystems EPX-C3 SBC: 0.1\n"); return 0; @@ -218,6 +215,8 @@ module_init(watchdog_init); module_exit(watchdog_exit); MODULE_AUTHOR("Calin A. Culianu <calin@ajvar.org>"); -MODULE_DESCRIPTION("Hardware Watchdog Device for Winsystems EPX-C3 SBC. Note that there is no way to probe for this device -- so only use it if you are *sure* you are runnning on this specific SBC system from Winsystems! It writes to IO ports 0x1ee and 0x1ef!"); +MODULE_DESCRIPTION("Hardware Watchdog Device for Winsystems EPX-C3 SBC. " + "Note that there is no way to probe for this device -- " + "so only use it if you are *sure* you are running on this specific " + "SBC system from Winsystems! It writes to IO ports 0x1ee and 0x1ef!"); MODULE_LICENSE("GPL"); -MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR); |