[WATCHDOG 43/57] sc520_wdt: Clean up and switch to unlocked_ioctl

Review and switch to unlocked_ioctl

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

drivers/watchdog/sc520_wdt.c

@@ -64,9 +64,9 @@
 #include <linux/reboot.h>
 #include <linux/init.h>
 #include <linux/jiffies.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
 
-#include <asm/io.h>
-#include <asm/uaccess.h>
 #include <asm/system.h>
 
 #define OUR_NAME "sc520_wdt"
@@ -91,13 +91,18 @@
  */
 
 #define WATCHDOG_TIMEOUT 30		/* 30 sec default timeout */
-static int timeout = WATCHDOG_TIMEOUT;	/* in seconds, will be multiplied by HZ to get seconds to wait for a ping */
+/* in seconds, will be multiplied by HZ to get seconds to wait for a ping */
+static int timeout = WATCHDOG_TIMEOUT;
 module_param(timeout, int, 0);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. (1<=timeout<=3600, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
+MODULE_PARM_DESC(timeout,
+	"Watchdog timeout in seconds. (1 <= timeout <= 3600, default="
+				__MODULE_STRING(WATCHDOG_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) ")");
+MODULE_PARM_DESC(nowayout,
+		"Watchdog cannot be stopped once started (default="
+				__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
 
 /*
  * AMD Elan SC520 - Watchdog Timer Registers
@@ -136,8 +141,7 @@ static void wdt_timer_ping(unsigned long data)
 	/* If we got a heartbeat pulse within the WDT_US_INTERVAL
 	 * we agree to ping the WDT
 	 */
-	if(time_before(jiffies, next_heartbeat))
+	if (time_before(jiffies, next_heartbeat)) {
-	{
 		/* Ping the WDT */
 		spin_lock(&wdt_spinlock);
 		writew(0xAAAA, wdtmrctl);
@@ -146,9 +150,9 @@ static void wdt_timer_ping(unsigned long data)
 
 		/* Re-set the timer interval */
 		mod_timer(&timer, jiffies + WDT_INTERVAL);
-	} else {
+	} else
-		printk(KERN_WARNING PFX "Heartbeat lost! Will not ping the watchdog\n");
+		printk(KERN_WARNING PFX
-	}
+			"Heartbeat lost! Will not ping the watchdog\n");
 }
 
 /*
@@ -219,7 +223,8 @@ static int wdt_set_heartbeat(int t)
  *	/dev/watchdog handling
  */
 
-static ssize_t fop_write(struct file * file, const char __user * buf, size_t count, loff_t * ppos)
+static ssize_t fop_write(struct file *file, const char __user *buf,
+						size_t count, loff_t *ppos)
 {
 	/* See if we got the magic character 'V' and reload the timer */
 	if (count) {
@@ -240,7 +245,8 @@ static ssize_t fop_write(struct file * file, const char __user * buf, size_t cou
 			}
 		}
 
-		/* Well, anyhow someone wrote to us, we should return that favour */
+		/* Well, anyhow someone wrote to us, we should
+		   return that favour */
 		wdt_keepalive();
 	}
 	return count;
@@ -261,10 +267,11 @@ static int fop_open(struct inode * inode, struct file * file)
 
 static int fop_close(struct inode *inode, struct file *file)
 {
-	if(wdt_expect_close == 42) {
+	if (wdt_expect_close == 42)
 		wdt_turnoff();
-	} else {
+	else {
-		printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
+		printk(KERN_CRIT PFX
+			"Unexpected close, not stopping watchdog!\n");
 		wdt_keepalive();
 	}
 	clear_bit(0, &wdt_is_open);
@@ -272,13 +279,13 @@ static int fop_close(struct inode * inode, struct file * file)
 	return 0;
 }
 
-static int fop_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
+static int fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-	unsigned long arg)
 {
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
-	static struct watchdog_info ident = {
+	static const struct watchdog_info ident = {
-		.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
+		.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT
+							| WDIOF_MAGICCLOSE,
 		.firmware_version = 1,
 		.identity = "SC520",
 	};
@@ -383,10 +390,12 @@ static int __init sc520_wdt_init(void)
 {
 	int rc = -EBUSY;
 
-	/* Check that the timeout value is within it's range ; if not reset to the default */
+	/* Check that the timeout value is within it's range ;
+	   if not reset to the default */
 	if (wdt_set_heartbeat(timeout)) {
 		wdt_set_heartbeat(WATCHDOG_TIMEOUT);
-		printk(KERN_INFO PFX "timeout value must be 1<=timeout<=3600, using %d\n",
+		printk(KERN_INFO PFX
+		    "timeout value must be 1 <= timeout <= 3600, using %d\n",
 							WATCHDOG_TIMEOUT);
 	}
 
@@ -399,19 +408,21 @@ static int __init sc520_wdt_init(void)
 
 	rc = register_reboot_notifier(&wdt_notifier);
 	if (rc) {
-		printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
+		printk(KERN_ERR PFX
-			rc);
+			"cannot register reboot notifier (err=%d)\n", rc);
 		goto err_out_ioremap;
 	}
 
 	rc = misc_register(&wdt_miscdev);
 	if (rc) {
-		printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
+		printk(KERN_ERR PFX
+			"cannot register miscdev on minor=%d (err=%d)\n",
 							WATCHDOG_MINOR, rc);
 		goto err_out_notifier;
 	}
 
-	printk(KERN_INFO PFX "WDT driver for SC520 initialised. timeout=%d sec (nowayout=%d)\n",
+	printk(KERN_INFO PFX
+	   "WDT driver for SC520 initialised. timeout=%d sec (nowayout=%d)\n",
 							timeout, nowayout);
 
 	return 0;