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path: root/drivers/watchdog/sbc7240_wdt.c
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Diffstat (limited to 'drivers/watchdog/sbc7240_wdt.c')
-rw-r--r--drivers/watchdog/sbc7240_wdt.c121
1 files changed, 54 insertions, 67 deletions
diff --git a/drivers/watchdog/sbc7240_wdt.c b/drivers/watchdog/sbc7240_wdt.c
index 4c8cefbd862..5f268add17c 100644
--- a/drivers/watchdog/sbc7240_wdt.c
+++ b/drivers/watchdog/sbc7240_wdt.c
@@ -16,6 +16,8 @@
*
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/ioport.h>
@@ -27,12 +29,9 @@
#include <linux/reboot.h>
#include <linux/types.h>
#include <linux/watchdog.h>
-#include <asm/atomic.h>
-#include <asm/io.h>
-#include <asm/system.h>
-#include <asm/uaccess.h>
-
-#define SBC7240_PREFIX "sbc7240_wdt: "
+#include <linux/io.h>
+#include <linux/uaccess.h>
+#include <linux/atomic.h>
#define SBC7240_ENABLE_PORT 0x443
#define SBC7240_DISABLE_PORT 0x043
@@ -47,8 +46,8 @@ MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. (1<=timeout<="
__MODULE_STRING(SBC7240_MAX_TIMEOUT) ", default="
__MODULE_STRING(SBC7240_TIMEOUT) ")");
-static int nowayout = WATCHDOG_NOWAYOUT;
-module_param(nowayout, int, 0);
+static bool nowayout = WATCHDOG_NOWAYOUT;
+module_param(nowayout, bool, 0);
MODULE_PARM_DESC(nowayout, "Disable watchdog when closing device file");
#define SBC7240_OPEN_STATUS_BIT 0
@@ -65,8 +64,7 @@ static void wdt_disable(void)
/* disable the watchdog */
if (test_and_clear_bit(SBC7240_ENABLED_STATUS_BIT, &wdt_status)) {
inb_p(SBC7240_DISABLE_PORT);
- printk(KERN_INFO SBC7240_PREFIX
- "Watchdog timer is now disabled.\n");
+ pr_info("Watchdog timer is now disabled\n");
}
}
@@ -75,23 +73,20 @@ static void wdt_enable(void)
/* enable the watchdog */
if (!test_and_set_bit(SBC7240_ENABLED_STATUS_BIT, &wdt_status)) {
inb_p(SBC7240_ENABLE_PORT);
- printk(KERN_INFO SBC7240_PREFIX
- "Watchdog timer is now enabled.\n");
+ pr_info("Watchdog timer is now enabled\n");
}
}
static int wdt_set_timeout(int t)
{
if (t < 1 || t > SBC7240_MAX_TIMEOUT) {
- printk(KERN_ERR SBC7240_PREFIX
- "timeout value must be 1<=x<=%d\n",
- SBC7240_MAX_TIMEOUT);
+ pr_err("timeout value must be 1<=x<=%d\n", SBC7240_MAX_TIMEOUT);
return -1;
}
/* set the timeout */
outb_p((unsigned)t, SBC7240_SET_TIMEOUT_PORT);
timeout = t;
- printk(KERN_INFO SBC7240_PREFIX "timeout set to %d seconds\n", t);
+ pr_info("timeout set to %d seconds\n", t);
return 0;
}
@@ -150,8 +145,7 @@ static int fop_close(struct inode *inode, struct file *file)
|| !nowayout) {
wdt_disable();
} else {
- printk(KERN_CRIT SBC7240_PREFIX
- "Unexpected close, not stopping watchdog!\n");
+ pr_crit("Unexpected close, not stopping watchdog!\n");
wdt_keepalive();
}
@@ -159,7 +153,7 @@ static int fop_close(struct inode *inode, struct file *file)
return 0;
}
-static struct watchdog_info ident = {
+static const struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING|
WDIOF_SETTIMEOUT|
WDIOF_MAGICCLOSE,
@@ -168,50 +162,50 @@ static struct watchdog_info ident = {
};
-static int fop_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
- unsigned long arg)
+static long fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
switch (cmd) {
case WDIOC_GETSUPPORT:
- return copy_to_user
- ((void __user *)arg, &ident, sizeof(ident))
- ? -EFAULT : 0;
+ return copy_to_user((void __user *)arg, &ident, sizeof(ident))
+ ? -EFAULT : 0;
case WDIOC_GETSTATUS:
case WDIOC_GETBOOTSTATUS:
return put_user(0, (int __user *)arg);
- case WDIOC_KEEPALIVE:
- wdt_keepalive();
- return 0;
- case WDIOC_SETOPTIONS:{
- int options;
- int retval = -EINVAL;
+ case WDIOC_SETOPTIONS:
+ {
+ int options;
+ int retval = -EINVAL;
- if (get_user(options, (int __user *)arg))
- return -EFAULT;
+ if (get_user(options, (int __user *)arg))
+ return -EFAULT;
- if (options & WDIOS_DISABLECARD) {
- wdt_disable();
- retval = 0;
- }
-
- if (options & WDIOS_ENABLECARD) {
- wdt_enable();
- retval = 0;
- }
+ if (options & WDIOS_DISABLECARD) {
+ wdt_disable();
+ retval = 0;
+ }
- return retval;
+ if (options & WDIOS_ENABLECARD) {
+ wdt_enable();
+ retval = 0;
}
- case WDIOC_SETTIMEOUT:{
- int new_timeout;
- if (get_user(new_timeout, (int __user *)arg))
- return -EFAULT;
+ return retval;
+ }
+ case WDIOC_KEEPALIVE:
+ wdt_keepalive();
+ return 0;
+ case WDIOC_SETTIMEOUT:
+ {
+ int new_timeout;
- if (wdt_set_timeout(new_timeout))
- return -EINVAL;
+ if (get_user(new_timeout, (int __user *)arg))
+ return -EFAULT;
- /* Fall through */
- }
+ if (wdt_set_timeout(new_timeout))
+ return -EINVAL;
+
+ /* Fall through */
+ }
case WDIOC_GETTIMEOUT:
return put_user(timeout, (int __user *)arg);
default:
@@ -225,7 +219,7 @@ static const struct file_operations wdt_fops = {
.write = fop_write,
.open = fop_open,
.release = fop_close,
- .ioctl = fop_ioctl,
+ .unlocked_ioctl = fop_ioctl,
};
static struct miscdevice wdt_miscdev = {
@@ -252,7 +246,7 @@ static struct notifier_block wdt_notifier = {
static void __exit sbc7240_wdt_unload(void)
{
- printk(KERN_INFO SBC7240_PREFIX "Removing watchdog\n");
+ pr_info("Removing watchdog\n");
misc_deregister(&wdt_miscdev);
unregister_reboot_notifier(&wdt_notifier);
@@ -264,8 +258,7 @@ static int __init sbc7240_wdt_init(void)
int rc = -EBUSY;
if (!request_region(SBC7240_ENABLE_PORT, 1, "SBC7240 WDT")) {
- printk(KERN_ERR SBC7240_PREFIX
- "I/O address 0x%04x already in use\n",
+ pr_err("I/O address 0x%04x already in use\n",
SBC7240_ENABLE_PORT);
rc = -EIO;
goto err_out;
@@ -273,35 +266,31 @@ static int __init sbc7240_wdt_init(void)
/* The IO port 0x043 used to disable the watchdog
* is already claimed by the system timer, so we
- * cant request_region() it ...*/
+ * can't request_region() it ...*/
if (timeout < 1 || timeout > SBC7240_MAX_TIMEOUT) {
timeout = SBC7240_TIMEOUT;
- printk(KERN_INFO SBC7240_PREFIX
- "timeout value must be 1<=x<=%d, using %d\n",
- SBC7240_MAX_TIMEOUT, timeout);
+ pr_info("timeout value must be 1<=x<=%d, using %d\n",
+ SBC7240_MAX_TIMEOUT, timeout);
}
wdt_set_timeout(timeout);
wdt_disable();
rc = register_reboot_notifier(&wdt_notifier);
if (rc) {
- printk(KERN_ERR SBC7240_PREFIX
- "cannot register reboot notifier (err=%d)\n", rc);
+ pr_err("cannot register reboot notifier (err=%d)\n", rc);
goto err_out_region;
}
rc = misc_register(&wdt_miscdev);
if (rc) {
- printk(KERN_ERR SBC7240_PREFIX
- "cannot register miscdev on minor=%d (err=%d)\n",
+ pr_err("cannot register miscdev on minor=%d (err=%d)\n",
wdt_miscdev.minor, rc);
goto err_out_reboot_notifier;
}
- printk(KERN_INFO SBC7240_PREFIX
- "Watchdog driver for SBC7240 initialised (nowayout=%d)\n",
- nowayout);
+ pr_info("Watchdog driver for SBC7240 initialised (nowayout=%d)\n",
+ nowayout);
return 0;
@@ -320,5 +309,3 @@ MODULE_AUTHOR("Gilles Gigan");
MODULE_DESCRIPTION("Watchdog device driver for single board"
" computers EPIC Nano 7240 from iEi");
MODULE_LICENSE("GPL");
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
-
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-17 11:03:18 +0000