Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog

* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
  [WATCHDOG] i6300esb.c: start locking
  [WATCHDOG] i6300esb.c: convert to platform device driver
  [WATCHDOG] wdt.c: remove #ifdef CONFIG_WDT_501
  [WATCHDOG] Fix io.h & uaccess.h includes.
  [WATCHDOG] More coding-style and trivial clean-up
  [WATCHDOG] struct file_operations should be const
  [WATCHDOG] cpwd.c: Coding style - Clean-up
  [WATCHDOG] hpwdt.c: Add new HP BMC controller. 
  [PATCH 13/13] drivers/watchdog: use USB API functions rather than constants
  [WATCHDOG] orion5x_wdt: fix compile issue by providing tclk as platform data
  [WATCHDOG] rc32434_wdt: make sure watchdog is not running at startup
  [WATCHDOG] rc32434_wdt: add spin_locking
  [WATCHDOG] rc32434_wdt: add shutdown method
  [WATCHDOG] rc32434_wdt: add timeout module parameter
  [WATCHDOG] rc32434_wdt: clean-up driver
  [WATCHDOG] davinci: convert to ioremap() + io[read|write]
  [WATCHDOG] w83697ug: add error checking
  [WATCHDOG] cpwd.c & riowd.c - unlocked_ioctl

arch/arm/mach-orion5x/common.c

@@ -31,6 +31,7 @@
 #include <plat/ehci-orion.h>
 #include <plat/mv_xor.h>
 #include <plat/orion_nand.h>
+#include <plat/orion5x_wdt.h>
 #include <plat/time.h>
 #include "common.h"
 
@@ -532,6 +533,29 @@ void __init orion5x_xor_init(void)
 }
 
 
+/*****************************************************************************
+ * Watchdog
+ ****************************************************************************/
+static struct orion5x_wdt_platform_data orion5x_wdt_data = {
+	.tclk			= 0,
+};
+
+static struct platform_device orion5x_wdt_device = {
+	.name		= "orion5x_wdt",
+	.id		= -1,
+	.dev		= {
+		.platform_data	= &orion5x_wdt_data,
+	},
+	.num_resources	= 0,
+};
+
+void __init orion5x_wdt_init(void)
+{
+	orion5x_wdt_data.tclk = orion5x_tclk;
+	platform_device_register(&orion5x_wdt_device);
+}
+
+
 /*****************************************************************************
  * Time handling
  ****************************************************************************/
@@ -631,6 +655,11 @@ void __init orion5x_init(void)
 		printk(KERN_INFO "Orion: Applying 5281 D0 WFI workaround.\n");
 		disable_hlt();
 	}
+
+	/*
+	 * Register watchdog driver
+	 */
+	orion5x_wdt_init();
 }
 
 /*

arch/arm/plat-orion/include/plat/orion5x_wdt.h

+/*
+ * arch/arm/plat-orion/include/plat/orion5x_wdt.h
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#ifndef __PLAT_ORION5X_WDT_H
+#define __PLAT_ORION5X_WDT_H
+
+struct orion5x_wdt_platform_data {
+	u32	tclk;		/* no <linux/clk.h> support yet */
+};
+
+
+#endif
+

drivers/watchdog/Kconfig

@@ -940,21 +940,6 @@ config WDT
 	  To compile this driver as a module, choose M here: the
 	  module will be called wdt.
 
-config WDT_501
-	bool "WDT501 features"
-	depends on WDT
-	help
-	  Saying Y here and creating a character special file /dev/temperature
-	  with major number 10 and minor number 131 ("man mknod") will give
-	  you a thermometer inside your computer: reading from
-	  /dev/temperature yields one byte, the temperature in degrees
-	  Fahrenheit. This works only if you have a WDT501P watchdog board
-	  installed.
-
-	  If you want to enable the Fan Tachometer on the WDT501P, then you
-	  can do this via the tachometer parameter. Only do this if you have a
-	  fan tachometer actually set up.
-
 #
 # PCI-based Watchdog Cards
 #

drivers/watchdog/acquirewdt.c

 /*
  *	Acquire Single Board Computer Watchdog Timer driver
  *
- *      Based on wdt.c. Original copyright messages:
+ *	Based on wdt.c. Original copyright messages:
  *
  *	(c) Copyright 1996 Alan Cox <alan@lxorguk.ukuu.org.uk>,
  *						All Rights Reserved.
@@ -17,9 +17,9 @@
  *
  *	(c) Copyright 1995    Alan Cox <alan@lxorguk.ukuu.org.uk>
  *
- *      14-Dec-2001 Matt Domsch <Matt_Domsch@dell.com>
- *          Added nowayout module option to override CONFIG_WATCHDOG_NOWAYOUT
- *          Can't add timeout - driver doesn't allow changing value
+ *	14-Dec-2001 Matt Domsch <Matt_Domsch@dell.com>
+ *	    Added nowayout module option to override CONFIG_WATCHDOG_NOWAYOUT
+ *	    Can't add timeout - driver doesn't allow changing value
  */
 
 /*

drivers/watchdog/advantechwdt.c

@@ -138,7 +138,9 @@ static long advwdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	void __user *argp = (void __user *)arg;
 	int __user *p = argp;
 	static struct watchdog_info ident = {
-		.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
+		.options = WDIOF_KEEPALIVEPING |
+			   WDIOF_SETTIMEOUT |
+			   WDIOF_MAGICCLOSE,
 		.firmware_version = 1,
 		.identity = WATCHDOG_NAME,
 	};
@@ -259,7 +261,8 @@ static int __devinit advwdt_probe(struct platform_device *dev)
 		goto unreg_stop;
 	}
 
-	/* Check that the heartbeat value is within it's range ; if not reset to the default */
+	/* Check that the heartbeat value is within it's range ;
+	 * if not reset to the default */
 	if (advwdt_set_heartbeat(timeout)) {
 		advwdt_set_heartbeat(WATCHDOG_TIMEOUT);
 		printk(KERN_INFO PFX

drivers/watchdog/alim1535_wdt.c

@@ -60,7 +60,7 @@ static void ali_start(void)
 
 	pci_read_config_dword(ali_pci, 0xCC, &val);
 	val &= ~0x3F;	/* Mask count */
-	val |= (1<<25) | ali_timeout_bits;
+	val |= (1 << 25) | ali_timeout_bits;
 	pci_write_config_dword(ali_pci, 0xCC, val);
 
 	spin_unlock(&ali_lock);
@@ -79,8 +79,8 @@ static void ali_stop(void)
 	spin_lock(&ali_lock);
 
 	pci_read_config_dword(ali_pci, 0xCC, &val);
-	val &= ~0x3F;	/* Mask count to zero (disabled) */
-	val &= ~(1<<25);/* and for safety mask the reset enable */
+	val &= ~0x3F;		/* Mask count to zero (disabled) */
+	val &= ~(1 << 25);	/* and for safety mask the reset enable */
 	pci_write_config_dword(ali_pci, 0xCC, val);
 
 	spin_unlock(&ali_lock);
@@ -89,7 +89,7 @@ static void ali_stop(void)
 /*
  *	ali_keepalive	-	send a keepalive to the watchdog
  *
- *      Send a keepalive to the timer (actually we restart the timer).
+ *	Send a keepalive to the timer (actually we restart the timer).
  */
 
 static void ali_keepalive(void)
@@ -109,11 +109,11 @@ static int ali_settimer(int t)
 	if (t < 0)
 		return -EINVAL;
 	else if (t < 60)
-		ali_timeout_bits = t|(1<<6);
+		ali_timeout_bits = t|(1 << 6);
 	else if (t < 3600)
-		ali_timeout_bits = (t/60)|(1<<7);
+		ali_timeout_bits = (t / 60)|(1 << 7);
 	else if (t < 18000)
-		ali_timeout_bits = (t/300)|(1<<6)|(1<<7);
+		ali_timeout_bits = (t / 300)|(1 << 6)|(1 << 7);
 	else
 		return -EINVAL;
 
@@ -138,7 +138,7 @@ static int ali_settimer(int t)
  */
 
 static ssize_t ali_write(struct file *file, const char __user *data,
-			      size_t len, loff_t *ppos)
+						size_t len, loff_t *ppos)
 {
 	/* See if we got the magic character 'V' and reload the timer */
 	if (len) {
@@ -348,9 +348,9 @@ static int __init ali_find_watchdog(void)
 	/* Timer bits */
 	wdog &= ~0x3F;
 	/* Issued events */
-	wdog &= ~((1<<27)|(1<<26)|(1<<25)|(1<<24));
+	wdog &= ~((1 << 27)|(1 << 26)|(1 << 25)|(1 << 24));
 	/* No monitor bits */
-	wdog &= ~((1<<16)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9));
+	wdog &= ~((1 << 16)|(1 << 13)|(1 << 12)|(1 << 11)|(1 << 10)|(1 << 9));
 
 	pci_write_config_dword(pdev, 0xCC, wdog);
 

drivers/watchdog/alim7101_wdt.c

@@ -355,7 +355,8 @@ static int __init alim7101_wdt_init(void)
 	alim7101_pmu = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101,
 		NULL);
 	if (!alim7101_pmu) {
-		printk(KERN_INFO PFX "ALi M7101 PMU not present - WDT not set\n");
+		printk(KERN_INFO PFX
+			"ALi M7101 PMU not present - WDT not set\n");
 		return -EBUSY;
 	}
 
@@ -399,7 +400,8 @@ static int __init alim7101_wdt_init(void)
 
 	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",
 			wdt_miscdev.minor, rc);
 		goto err_out_reboot;
 	}

drivers/watchdog/at91sam9_wdt.c

@@ -201,7 +201,7 @@ static long at91_wdt_ioctl(struct file *file,
  * Pat the watchdog whenever device is written to.
  */
 static ssize_t at91_wdt_write(struct file *file, const char *data, size_t len,
-      loff_t *ppos)
+								loff_t *ppos)
 {
 	if (!len)
 		return 0;

drivers/watchdog/cpwd.c

 /* cpwd.c - driver implementation for hardware watchdog
  * timers found on Sun Microsystems CP1400 and CP1500 boards.
  *
- * This device supports both the generic Linux watchdog 
+ * This device supports both the generic Linux watchdog
  * interface and Solaris-compatible ioctls as best it is
  * able.
  *
  * NOTE: 	CP1400 systems appear to have a defective intr_mask
  * 			register on the PLD, preventing the disabling of
- * 			timer interrupts.  We use a timer to periodically 
+ * 			timer interrupts.  We use a timer to periodically
  * 			reset 'stopped' watchdogs on affected platforms.
  *
  * Copyright (c) 2000 Eric Brower (ebrower@usa.net)
@@ -28,10 +28,9 @@
 #include <linux/io.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
+#include <linux/uaccess.h>
 
 #include <asm/irq.h>
-#include <asm/uaccess.h>
-
 #include <asm/watchdog.h>
 
 #define DRIVER_NAME	"cpwd"
@@ -43,8 +42,8 @@
 #define WD_BLIMIT	0xFFFF
 
 #define WD0_MINOR	212
-#define WD1_MINOR	213	
-#define WD2_MINOR	214	
+#define WD1_MINOR	213
+#define WD2_MINOR	214
 
 /* Internal driver definitions.  */
 #define WD0_ID			0
@@ -91,16 +90,16 @@ struct cpwd {
 
 static struct cpwd *cpwd_device;
 
-/* Sun uses Altera PLD EPF8820ATC144-4 
+/* Sun uses Altera PLD EPF8820ATC144-4
  * providing three hardware watchdogs:
  *
- * 	1) RIC - sends an interrupt when triggered
- * 	2) XIR - asserts XIR_B_RESET when triggered, resets CPU
- * 	3) POR - asserts POR_B_RESET when triggered, resets CPU, backplane, board
+ * 1) RIC - sends an interrupt when triggered
+ * 2) XIR - asserts XIR_B_RESET when triggered, resets CPU
+ * 3) POR - asserts POR_B_RESET when triggered, resets CPU, backplane, board
  *
  *** Timer register block definition (struct wd_timer_regblk)
  *
- * dcntr and limit registers (halfword access):      
+ * dcntr and limit registers (halfword access):
  * -------------------
  * | 15 | ...| 1 | 0 |
  * -------------------
@@ -108,7 +107,8 @@ static struct cpwd *cpwd_device;
  * -------------------
  * dcntr - 	Current 16-bit downcounter value.
  * 			When downcounter reaches '0' watchdog expires.
- * 			Reading this register resets downcounter with 'limit' value.
+ * 			Reading this register resets downcounter with
+ * 			'limit' value.
  * limit - 	16-bit countdown value in 1/10th second increments.
  * 			Writing this register begins countdown with input value.
  * 			Reading from this register does not affect counter.
@@ -158,11 +158,11 @@ static int wd0_timeout = 0;
 static int wd1_timeout = 0;
 static int wd2_timeout = 0;
 
-module_param	(wd0_timeout, int, 0);
+module_param(wd0_timeout, int, 0);
 MODULE_PARM_DESC(wd0_timeout, "Default watchdog0 timeout in 1/10secs");
-module_param 	(wd1_timeout, int, 0);
+module_param(wd1_timeout, int, 0);
 MODULE_PARM_DESC(wd1_timeout, "Default watchdog1 timeout in 1/10secs");
-module_param 	(wd2_timeout, int, 0);
+module_param(wd2_timeout, int, 0);
 MODULE_PARM_DESC(wd2_timeout, "Default watchdog2 timeout in 1/10secs");
 
 MODULE_AUTHOR("Eric Brower <ebrower@usa.net>");
@@ -201,9 +201,9 @@ static u8 cpwd_readb(void __iomem *addr)
 static void cpwd_toggleintr(struct cpwd *p, int index, int enable)
 {
 	unsigned char curregs = cpwd_readb(p->regs + PLD_IMASK);
-	unsigned char setregs = 
-		(index == -1) ? 
-		(WD0_INTR_MASK | WD1_INTR_MASK | WD2_INTR_MASK) : 
+	unsigned char setregs =
+		(index == -1) ?
+		(WD0_INTR_MASK | WD1_INTR_MASK | WD2_INTR_MASK) :
 		(p->devs[index].intr_mask);
 
 	if (enable == WD_INTR_ON)
@@ -303,24 +303,24 @@ static int cpwd_getstatus(struct cpwd *p, int index)
 	unsigned char ret  = WD_STOPPED;
 
 	/* determine STOPPED */
-	if (!stat) 
+	if (!stat)
 		return ret;
 
 	/* determine EXPIRED vs FREERUN vs RUNNING */
 	else if (WD_S_EXPIRED & stat) {
 		ret = WD_EXPIRED;
-	} else if(WD_S_RUNNING & stat) {
+	} else if (WD_S_RUNNING & stat) {
 		if (intr & p->devs[index].intr_mask) {
 			ret = WD_FREERUN;
 		} else {
 			/* Fudge WD_EXPIRED status for defective CP1400--
-			 * IF timer is running 
-			 * 	AND brokenstop is set 
+			 * IF timer is running
+			 * 	AND brokenstop is set
 			 * 	AND an interrupt has been serviced
 			 * we are WD_EXPIRED.
 			 *
-			 * IF timer is running 
-			 * 	AND brokenstop is set 
+			 * IF timer is running
+			 * 	AND brokenstop is set
 			 * 	AND no interrupt has been serviced
 			 * we are WD_FREERUN.
 			 */
@@ -329,7 +329,8 @@ static int cpwd_getstatus(struct cpwd *p, int index)
 				if (p->devs[index].runstatus & WD_STAT_SVCD) {
 					ret = WD_EXPIRED;
 				} else {
-					/* we could as well pretend we are expired */
+					/* we could as well pretend
+					 * we are expired */
 					ret = WD_FREERUN;
 				}
 			} else {
@@ -342,7 +343,7 @@ static int cpwd_getstatus(struct cpwd *p, int index)
 	if (p->devs[index].runstatus & WD_STAT_SVCD)
 		ret |= WD_SERVICED;
 
-	return(ret);
+	return ret;
 }
 
 static irqreturn_t cpwd_interrupt(int irq, void *dev_id)
@@ -367,22 +368,22 @@ static int cpwd_open(struct inode *inode, struct file *f)
 	struct cpwd *p = cpwd_device;
 
 	lock_kernel();
-	switch(iminor(inode)) {
-		case WD0_MINOR:
-		case WD1_MINOR:
-		case WD2_MINOR:
-			break;
+	switch (iminor(inode)) {
+	case WD0_MINOR:
+	case WD1_MINOR:
+	case WD2_MINOR:
+		break;
 
-		default:
-			unlock_kernel();
-			return -ENODEV;
+	default:
+		unlock_kernel();
+		return -ENODEV;
 	}
 
 	/* Register IRQ on first open of device */
 	if (!p->initialized) {
-		if (request_irq(p->irq, &cpwd_interrupt, 
+		if (request_irq(p->irq, &cpwd_interrupt,
 				IRQF_SHARED, DRIVER_NAME, p)) {
-			printk(KERN_ERR PFX "Cannot register IRQ %d\n", 
+			printk(KERN_ERR PFX "Cannot register IRQ %d\n",
 				p->irq);
 			unlock_kernel();
 			return -EBUSY;
@@ -400,8 +401,7 @@ static int cpwd_release(struct inode *inode, struct file *file)
 	return 0;
 }
 
-static int cpwd_ioctl(struct inode *inode, struct file *file, 
-		      unsigned int cmd, unsigned long arg)
+static long cpwd_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
 	static struct watchdog_info info = {
 		.options		= WDIOF_SETTIMEOUT,
@@ -409,6 +409,7 @@ static int cpwd_ioctl(struct inode *inode, struct file *file,
 		.identity		= DRIVER_NAME,
 	};
 	void __user *argp = (void __user *)arg;
+	struct inode *inode = file->f_path.dentry->d_inode;
 	int index = iminor(inode) - WD0_MINOR;
 	struct cpwd *p = cpwd_device;
 	int setopt = 0;
@@ -442,7 +443,7 @@ static int cpwd_ioctl(struct inode *inode, struct file *file,
 			cpwd_starttimer(p, index);
 		} else {
 			return -EINVAL;
-		}	
+		}
 		break;
 
 	/* Solaris-compatible IOCTLs */
@@ -458,7 +459,7 @@ static int cpwd_ioctl(struct inode *inode, struct file *file,
 
 	case WIOCSTOP:
 		if (p->enabled)
-			return(-EINVAL);
+			return -EINVAL;
 
 		cpwd_stoptimer(p, index);
 		break;
@@ -481,7 +482,7 @@ static long cpwd_compat_ioctl(struct file *file, unsigned int cmd,
 	case WIOCSTOP:
 	case WIOCGSTAT:
 		lock_kernel();
-		rval = cpwd_ioctl(file->f_path.dentry->d_inode, file, cmd, arg);
+		rval = cpwd_ioctl(file, cmd, arg);
 		unlock_kernel();
 		break;
 
@@ -493,7 +494,7 @@ static long cpwd_compat_ioctl(struct file *file, unsigned int cmd,
 	return rval;
 }
 
-static ssize_t cpwd_write(struct file *file, const char __user *buf, 
+static ssize_t cpwd_write(struct file *file, const char __user *buf,
 			  size_t count, loff_t *ppos)
 {
 	struct inode *inode = file->f_path.dentry->d_inode;
@@ -508,20 +509,20 @@ static ssize_t cpwd_write(struct file *file, const char __user *buf,
 	return 0;
 }
 
-static ssize_t cpwd_read(struct file * file, char __user *buffer,
+static ssize_t cpwd_read(struct file *file, char __user *buffer,
 			 size_t count, loff_t *ppos)
 {
 	return -EINVAL;
 }
 
 static const struct file_operations cpwd_fops = {
-	.owner =	THIS_MODULE,
-	.ioctl =	cpwd_ioctl,
-	.compat_ioctl =	cpwd_compat_ioctl,
-	.open =		cpwd_open,
-	.write =	cpwd_write,
-	.read =		cpwd_read,
-	.release =	cpwd_release,
+	.owner =		THIS_MODULE,
+	.unlocked_ioctl =	cpwd_ioctl,
+	.compat_ioctl =		cpwd_compat_ioctl,
+	.open =			cpwd_open,
+	.write =		cpwd_write,
+	.read =			cpwd_read,
+	.release =		cpwd_release,
 };
 
 static int __devinit cpwd_probe(struct of_device *op,

drivers/watchdog/davinci_wdt.c

@@ -24,7 +24,7 @@
 #include <linux/spinlock.h>
 #include <linux/uaccess.h>
 #include <linux/io.h>
-#include <mach/hardware.h>
+#include <linux/device.h>
 
 #define MODULE_NAME "DAVINCI-WDT: "
 
@@ -75,9 +75,9 @@ static void wdt_service(void)
 	spin_lock(&io_lock);
 
 	/* put watchdog in service state */
-	davinci_writel(WDKEY_SEQ0, wdt_base + WDTCR);
+	iowrite32(WDKEY_SEQ0, wdt_base + WDTCR);
 	/* put watchdog in active state */
-	davinci_writel(WDKEY_SEQ1, wdt_base + WDTCR);
+	iowrite32(WDKEY_SEQ1, wdt_base + WDTCR);
 
 	spin_unlock(&io_lock);
 }
@@ -90,29 +90,29 @@ static void wdt_enable(void)
 	spin_lock(&io_lock);
 
 	/* disable, internal clock source */
-	davinci_writel(0, wdt_base + TCR);
+	iowrite32(0, wdt_base + TCR);
 	/* reset timer, set mode to 64-bit watchdog, and unreset */
-	davinci_writel(0, wdt_base + TGCR);
+	iowrite32(0, wdt_base + TGCR);
 	tgcr = TIMMODE_64BIT_WDOG | TIM12RS_UNRESET | TIM34RS_UNRESET;
-	davinci_writel(tgcr, wdt_base + TGCR);
+	iowrite32(tgcr, wdt_base + TGCR);
 	/* clear counter regs */
-	davinci_writel(0, wdt_base + TIM12);
-	davinci_writel(0, wdt_base + TIM34);
+	iowrite32(0, wdt_base + TIM12);
+	iowrite32(0, wdt_base + TIM34);
 	/* set timeout period */
 	timer_margin = (((u64)heartbeat * CLOCK_TICK_RATE) & 0xffffffff);
-	davinci_writel(timer_margin, wdt_base + PRD12);
+	iowrite32(timer_margin, wdt_base + PRD12);
 	timer_margin = (((u64)heartbeat * CLOCK_TICK_RATE) >> 32);
-	davinci_writel(timer_margin, wdt_base + PRD34);
+	iowrite32(timer_margin, wdt_base + PRD34);
 	/* enable run continuously */
-	davinci_writel(ENAMODE12_PERIODIC, wdt_base + TCR);
+	iowrite32(ENAMODE12_PERIODIC, wdt_base + TCR);
 	/* Once the WDT is in pre-active state write to
 	 * TIM12, TIM34, PRD12, PRD34, TCR, TGCR, WDTCR are
 	 * write protected (except for the WDKEY field)
 	 */
 	/* put watchdog in pre-active state */
-	davinci_writel(WDKEY_SEQ0 | WDEN, wdt_base + WDTCR);
+	iowrite32(WDKEY_SEQ0 | WDEN, wdt_base + WDTCR);
 	/* put watchdog in active state */
-	davinci_writel(WDKEY_SEQ1 | WDEN, wdt_base + WDTCR);
+	iowrite32(WDKEY_SEQ1 | WDEN, wdt_base + WDTCR);
 
 	spin_unlock(&io_lock);
 }
@@ -197,17 +197,16 @@ static int davinci_wdt_probe(struct platform_device *pdev)
 {
 	int ret = 0, size;
 	struct resource *res;
+	struct device *dev = &pdev->dev;
 
 	if (heartbeat < 1 || heartbeat > MAX_HEARTBEAT)
 		heartbeat = DEFAULT_HEARTBEAT;
 
-	printk(KERN_INFO MODULE_NAME
-		"DaVinci Watchdog Timer: heartbeat %d sec\n", heartbeat);
+	dev_info(dev, "heartbeat %d sec\n", heartbeat);
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (res == NULL) {
-		printk(KERN_INFO MODULE_NAME
-			"failed to get memory region resource\n");
+		dev_err(dev, "failed to get memory region resource\n");
 		return -ENOENT;
 	}
 
@@ -215,20 +214,26 @@ static int davinci_wdt_probe(struct platform_device *pdev)
 	wdt_mem = request_mem_region(res->start, size, pdev->name);
 
 	if (wdt_mem == NULL) {
-		printk(KERN_INFO MODULE_NAME "failed to get memory region\n");
+		dev_err(dev, "failed to get memory region\n");
 		return -ENOENT;
 	}
-	wdt_base = (void __iomem *)(res->start);
+
+	wdt_base = ioremap(res->start, size);
+	if (!wdt_base) {
+		dev_err(dev, "failed to map memory region\n");
+		return -ENOMEM;
+	}
 
 	ret = misc_register(&davinci_wdt_miscdev);
 	if (ret < 0) {
-		printk(KERN_ERR MODULE_NAME "cannot register misc device\n");
+		dev_err(dev, "cannot register misc device\n");
 		release_resource(wdt_mem);
 		kfree(wdt_mem);
 	} else {
 		set_bit(WDT_DEVICE_INITED, &wdt_status);
 	}
 
+	iounmap(wdt_base);
 	return ret;
 }
 

drivers/watchdog/eurotechwdt.c

@@ -8,19 +8,19 @@
  *	Based on wdt.c.
  *	Original copyright messages:
  *
- *      (c) Copyright 1996-1997 Alan Cox <alan@lxorguk.ukuu.org.uk>,
+ *	(c) Copyright 1996-1997 Alan Cox <alan@lxorguk.ukuu.org.uk>,
  *						All Rights Reserved.
  *
- *      This program is free software; you can redistribute it and/or
- *      modify it under the terms of the GNU General Public License
- *      as published by the Free Software Foundation; either version
- *      2 of the License, or (at your option) any later version.
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License
+ *	as published by the Free Software Foundation; either version
+ *	2 of the License, or (at your option) any later version.
  *
- *      Neither Alan Cox nor CymruNet Ltd. admit liability nor provide
- *      warranty for any of this software. This material is provided
- *      "AS-IS" and at no charge.
+ *	Neither Alan Cox nor CymruNet Ltd. admit liability nor provide
+ *	warranty for any of this software. This material is provided
+ *	"AS-IS" and at no charge.
  *
- *      (c) Copyright 1995    Alan Cox <alan@lxorguk.ukuu.org.uk>*
+ *	(c) Copyright 1995    Alan Cox <alan@lxorguk.ukuu.org.uk>*
  */
 
 /* Changelog:
@@ -37,7 +37,7 @@
  *	add expect_close support
  *
  * 2002.05.30 - Joel Becker <joel.becker@oracle.com>
- * 	Added Matt Domsch's nowayout module option.
+ *	Added Matt Domsch's nowayout module option.
  */
 
 /*
@@ -151,7 +151,7 @@ static void eurwdt_activate_timer(void)
 	if (irq == 0)
 		printk(KERN_INFO ": interrupt disabled\n");
 
-	eurwdt_write_reg(WDT_TIMER_CFG, irq<<4);
+	eurwdt_write_reg(WDT_TIMER_CFG, irq << 4);
 
 	eurwdt_write_reg(WDT_UNIT_SEL, WDT_UNIT_SECS);	/* we use seconds */
 	eurwdt_set_timeout(0);	/* the default timeout */

drivers/watchdog/geodewdt.c

@@ -34,11 +34,15 @@
 
 static int timeout = WATCHDOG_TIMEOUT;
 module_param(timeout, int, 0);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. 1<= timeout <=131, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ".");
+MODULE_PARM_DESC(timeout,
+	"Watchdog timeout in seconds. 1<= timeout <=131, 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) ")");
 
 static struct platform_device *geodewdt_platform_device;
 static unsigned long wdt_flags;
@@ -269,7 +273,8 @@ static int __init geodewdt_init(void)
 	if (ret)
 		return ret;
 
-	geodewdt_platform_device = platform_device_register_simple(DRV_NAME, -1, NULL, 0);
+	geodewdt_platform_device = platform_device_register_simple(DRV_NAME,
+								-1, NULL, 0);
 	if (IS_ERR(geodewdt_platform_device)) {
 		ret = PTR_ERR(geodewdt_platform_device);
 		goto err;

drivers/watchdog/hpwdt.c

@@ -47,6 +47,7 @@
 #define PCI_BIOS32_PARAGRAPH_LEN	16
 #define PCI_ROM_BASE1			0x000F0000
 #define ROM_SIZE			0x10000
+#define HPWDT_VERSION			"1.01"
 
 struct bios32_service_dir {
 	u32 signature;
@@ -130,17 +131,14 @@ static void *cru_rom_addr;
 static struct cmn_registers cmn_regs;
 
 static struct pci_device_id hpwdt_devices[] = {
-	{
-	 .vendor = PCI_VENDOR_ID_COMPAQ,
-	 .device = 0xB203,
-	 .subvendor = PCI_ANY_ID,
-	 .subdevice = PCI_ANY_ID,
-	},
+	{ PCI_DEVICE(PCI_VENDOR_ID_COMPAQ, 0xB203) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_HP, 0x3306) },
 	{0},			/* terminate list */
 };
 MODULE_DEVICE_TABLE(pci, hpwdt_devices);
 
-extern asmlinkage void asminline_call(struct cmn_registers *pi86Regs, unsigned long *pRomEntry);
+extern asmlinkage void asminline_call(struct cmn_registers *pi86Regs,
+						unsigned long *pRomEntry);
 
 #ifndef CONFIG_X86_64
 /* --32 Bit Bios------------------------------------------------------------ */
@@ -605,7 +603,7 @@ static long hpwdt_ioctl(struct file *file, unsigned int cmd,
 /*
  *	Kernel interfaces
  */
-static struct file_operations hpwdt_fops = {
+static const struct file_operations hpwdt_fops = {
 	.owner = THIS_MODULE,
 	.llseek = no_llseek,
 	.write = hpwdt_write,
@@ -704,10 +702,11 @@ static int __devinit hpwdt_init_one(struct pci_dev *dev,
 	}
 
 	printk(KERN_INFO
-		"hp Watchdog Timer Driver: 1.00"
+		"hp Watchdog Timer Driver: %s"
 		", timer margin: %d seconds (nowayout=%d)"
 		", allow kernel dump: %s (default = 0/OFF).\n",
-		soft_margin, nowayout, (allow_kdump == 0) ? "OFF" : "ON");
+		HPWDT_VERSION, soft_margin, nowayout,
+		(allow_kdump == 0) ? "OFF" : "ON");
 
 	return 0;
 
@@ -757,6 +756,7 @@ static int __init hpwdt_init(void)
 MODULE_AUTHOR("Tom Mingarelli");
 MODULE_DESCRIPTION("hp watchdog driver");
 MODULE_LICENSE("GPL");
+MODULE_VERSION(HPWDT_VERSION);
 MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
 
 module_param(soft_margin, int, 0);

drivers/watchdog/i6300esb.c

@@ -13,7 +13,7 @@
  *
  *	The timer is implemented in the following I/O controller hubs:
  *	(See the intel documentation on http://developer.intel.com.)
- *	6300ESB chip : document number 300641-003
+ *	6300ESB chip : document number 300641-004
  *
  *  2004YYZZ Ross Biro
  *	Initial version 0.01
@@ -34,7 +34,7 @@
 #include <linux/mm.h>
 #include <linux/miscdevice.h>
 #include <linux/watchdog.h>
-#include <linux/reboot.h>
+#include <linux/platform_device.h>
 #include <linux/init.h>
 #include <linux/pci.h>
 #include <linux/ioport.h>
@@ -42,7 +42,7 @@
 #include <linux/io.h>
 
 /* Module and version information */
-#define ESB_VERSION "0.03"
+#define ESB_VERSION "0.04"
 #define ESB_MODULE_NAME "i6300ESB timer"
 #define ESB_DRIVER_NAME ESB_MODULE_NAME ", v" ESB_VERSION
 #define PFX ESB_MODULE_NAME ": "
@@ -81,6 +81,7 @@ static unsigned long timer_alive;
 static struct pci_dev *esb_pci;
 static unsigned short triggered; /* The status of the watchdog upon boot */
 static char esb_expect_close;
+static struct platform_device *esb_platform_device;
 
 /* module parameters */
 /* 30 sec default heartbeat (1 < heartbeat < 2*1023) */
@@ -114,13 +115,18 @@ static inline void esb_unlock_registers(void)
 	writeb(ESB_UNLOCK2, ESB_RELOAD_REG);
 }
 
-static void esb_timer_start(void)
+static int esb_timer_start(void)
 {
 	u8 val;
 
+	spin_lock(&esb_lock);
+	esb_unlock_registers();
+	writew(ESB_WDT_RELOAD, ESB_RELOAD_REG);
 	/* Enable or Enable + Lock? */
 	val = 0x02 | (nowayout ? 0x01 : 0x00);
 	pci_write_config_byte(esb_pci, ESB_LOCK_REG, val);
+	spin_unlock(&esb_lock);
+	return 0;
 }
 
 static int esb_timer_stop(void)
@@ -207,7 +213,6 @@ static int esb_open(struct inode *inode, struct file *file)
 		return -EBUSY;
 
 	/* Reload and activate timer */
-	esb_timer_keepalive();
 	esb_timer_start();
 
 	return nonseekable_open(inode, file);
@@ -240,7 +245,8 @@ static ssize_t esb_write(struct file *file, const char __user *data,
 			 * five months ago... */
 			esb_expect_close = 0;
 
-			/* scan to see whether or not we got the magic character */
+			/* scan to see whether or not we got the
+			 * magic character */
 			for (i = 0; i != len; i++) {
 				char c;
 				if (get_user(c, data + i))
@@ -292,7 +298,6 @@ static long esb_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 		}
 
 		if (new_options & WDIOS_ENABLECARD) {
-			esb_timer_keepalive();
 			esb_timer_start();
 			retval = 0;
 		}
@@ -318,19 +323,6 @@ static long esb_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	}
 }
 
-/*
- *      Notify system
- */
-
-static int esb_notify_sys(struct notifier_block *this,
-					unsigned long code, void *unused)
-{
-	if (code == SYS_DOWN || code == SYS_HALT)
-		esb_timer_stop();	/* Turn the WDT off */
-
-	return NOTIFY_DONE;
-}
-
 /*
  *      Kernel Interfaces
  */
@@ -350,10 +342,6 @@ static struct miscdevice esb_miscdev = {
 	.fops = &esb_fops,
 };
 
-static struct notifier_block esb_notifier = {
-	.notifier_call = esb_notify_sys,
-};
-
 /*
  * Data for PCI driver interface
  *
@@ -372,7 +360,7 @@ MODULE_DEVICE_TABLE(pci, esb_pci_tbl);
  *      Init & exit routines
  */
 
-static unsigned char __init esb_getdevice(void)
+static unsigned char __devinit esb_getdevice(void)
 {
 	u8 val1;
 	unsigned short val2;
@@ -443,7 +431,7 @@ static unsigned char __init esb_getdevice(void)
 	return 0;
 }
 
-static int __init watchdog_init(void)
+static int __devinit esb_probe(struct platform_device *dev)
 {
 	int ret;
 
@@ -459,19 +447,13 @@ static int __init watchdog_init(void)
 			"heartbeat value must be 1<heartbeat<2046, using %d\n",
 								heartbeat);
 	}
-	ret = register_reboot_notifier(&esb_notifier);
-	if (ret != 0) {
-		printk(KERN_ERR PFX
-			"cannot register reboot notifier (err=%d)\n", ret);
-		goto err_unmap;
-	}
 
 	ret = misc_register(&esb_miscdev);
 	if (ret != 0) {
 		printk(KERN_ERR PFX
 			"cannot register miscdev on minor=%d (err=%d)\n",
 							WATCHDOG_MINOR, ret);
-		goto err_notifier;
+		goto err_unmap;
 	}
 	esb_timer_stop();
 	printk(KERN_INFO PFX
@@ -479,8 +461,6 @@ static int __init watchdog_init(void)
 						BASEADDR, heartbeat, nowayout);
 	return 0;
 
-err_notifier:
-	unregister_reboot_notifier(&esb_notifier);
 err_unmap:
 	iounmap(BASEADDR);
 /* err_release: */
@@ -492,7 +472,7 @@ static int __init watchdog_init(void)
 	return ret;
 }
 
-static void __exit watchdog_cleanup(void)
+static int __devexit esb_remove(struct platform_device *dev)
 {
 	/* Stop the timer before we leave */
 	if (!nowayout)
@@ -500,11 +480,58 @@ static void __exit watchdog_cleanup(void)
 
 	/* Deregister */
 	misc_deregister(&esb_miscdev);
-	unregister_reboot_notifier(&esb_notifier);
 	iounmap(BASEADDR);
 	pci_release_region(esb_pci, 0);
 	pci_disable_device(esb_pci);
 	pci_dev_put(esb_pci);
+	return 0;
+}
+
+static void esb_shutdown(struct platform_device *dev)
+{
+	esb_timer_stop();
+}
+
+static struct platform_driver esb_platform_driver = {
+	.probe          = esb_probe,
+	.remove         = __devexit_p(esb_remove),
+	.shutdown       = esb_shutdown,
+	.driver         = {
+		.owner  = THIS_MODULE,
+		.name   = ESB_MODULE_NAME,
+	},
+};
+
+static int __init watchdog_init(void)
+{
+	int err;
+
+	printk(KERN_INFO PFX "Intel 6300ESB WatchDog Timer Driver v%s\n",
+		ESB_VERSION);
+
+	err = platform_driver_register(&esb_platform_driver);
+	if (err)
+		return err;
+
+	esb_platform_device = platform_device_register_simple(ESB_MODULE_NAME,
+								-1, NULL, 0);
+	if (IS_ERR(esb_platform_device)) {
+		err = PTR_ERR(esb_platform_device);
+		goto unreg_platform_driver;
+	}
+
+	return 0;
+
+unreg_platform_driver:
+	platform_driver_unregister(&esb_platform_driver);
+	return err;
+}
+
+static void __exit watchdog_cleanup(void)
+{
+	platform_device_unregister(esb_platform_device);
+	platform_driver_unregister(&esb_platform_driver);
+	printk(KERN_INFO PFX "Watchdog Module Unloaded.\n");
 }
 
 module_init(watchdog_init);

drivers/watchdog/iTCO_vendor_support.c

@@ -47,7 +47,8 @@
 
 static int vendorsupport;
 module_param(vendorsupport, int, 0);
-MODULE_PARM_DESC(vendorsupport, "iTCO vendor specific support mode, default=0 (none), 1=SuperMicro Pent3, 2=SuperMicro Pent4+");
+MODULE_PARM_DESC(vendorsupport, "iTCO vendor specific support mode, default="
+			"0 (none), 1=SuperMicro Pent3, 2=SuperMicro Pent4+");
 
 /*
  *	Vendor Specific Support
@@ -305,7 +306,8 @@ static void __exit iTCO_vendor_exit_module(void)
 module_init(iTCO_vendor_init_module);
 module_exit(iTCO_vendor_exit_module);
 
-MODULE_AUTHOR("Wim Van Sebroeck <wim@iguana.be>, R. Seretny <lkpatches@paypc.com>");
+MODULE_AUTHOR("Wim Van Sebroeck <wim@iguana.be>, "
+		"R. Seretny <lkpatches@paypc.com>");
 MODULE_DESCRIPTION("Intel TCO Vendor Specific WatchDog Timer Driver Support");
 MODULE_VERSION(DRV_VERSION);
 MODULE_LICENSE("GPL");

drivers/watchdog/iTCO_wdt.c

@@ -273,7 +273,9 @@ static struct platform_device *iTCO_wdt_platform_device;
 #define WATCHDOG_HEARTBEAT 30	/* 30 sec default heartbeat */
 static int heartbeat = WATCHDOG_HEARTBEAT;  /* in seconds */
 module_param(heartbeat, int, 0);
-MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (2<heartbeat<39 (TCO v1) or 613 (TCO v2), default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
+MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. "
+	"(2<heartbeat<39 (TCO v1) or 613 (TCO v2), default="
+				__MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
 
 static int nowayout = WATCHDOG_NOWAYOUT;
 module_param(nowayout, int, 0);
@@ -346,7 +348,8 @@ static int iTCO_wdt_start(void)
 	/* disable chipset's NO_REBOOT bit */
 	if (iTCO_wdt_unset_NO_REBOOT_bit()) {
 		spin_unlock(&iTCO_wdt_private.io_lock);
-		printk(KERN_ERR PFX "failed to reset NO_REBOOT flag, reboot disabled by hardware\n");
+		printk(KERN_ERR PFX "failed to reset NO_REBOOT flag, "
+					"reboot disabled by hardware\n");
 		return -EIO;
 	}
 
@@ -669,7 +672,8 @@ static int __devinit iTCO_wdt_init(struct pci_dev *pdev,
 
 	/* Check chipset's NO_REBOOT bit */
 	if (iTCO_wdt_unset_NO_REBOOT_bit() && iTCO_vendor_check_noreboot_on()) {
-		printk(KERN_ERR PFX "failed to reset NO_REBOOT flag, reboot disabled by hardware\n");
+		printk(KERN_ERR PFX "failed to reset NO_REBOOT flag, "
+					"reboot disabled by hardware\n");
 		ret = -ENODEV;	/* Cannot reset NO_REBOOT bit */
 		goto out;
 	}
@@ -716,8 +720,9 @@ static int __devinit iTCO_wdt_init(struct pci_dev *pdev,
 	   if not reset to the default */
 	if (iTCO_wdt_set_heartbeat(heartbeat)) {
 		iTCO_wdt_set_heartbeat(WATCHDOG_HEARTBEAT);
-		printk(KERN_INFO PFX "heartbeat value must be 2 < heartbeat < 39 (TCO v1) or 613 (TCO v2), using %d\n",
-							heartbeat);
+		printk(KERN_INFO PFX
+			"heartbeat value must be 2 < heartbeat < 39 (TCO v1) "
+				"or 613 (TCO v2), using %d\n", heartbeat);
 	}
 
 	ret = misc_register(&iTCO_wdt_miscdev);

drivers/watchdog/it87_wdt.c

@@ -188,8 +188,8 @@ static inline int superio_inb(int reg)
 
 static inline void superio_outb(int val, int reg)
 {
-       outb(reg, REG);
-       outb(val, VAL);
+	outb(reg, REG);
+	outb(val, VAL);
 }
 
 static inline int superio_inw(int reg)
@@ -204,10 +204,10 @@ static inline int superio_inw(int reg)
 
 static inline void superio_outw(int val, int reg)
 {
-       outb(reg++, REG);
-       outb(val >> 8, VAL);
-       outb(reg, REG);
-       outb(val, VAL);
+	outb(reg++, REG);
+	outb(val >> 8, VAL);
+	outb(reg, REG);
+	outb(val, VAL);
 }
 
 /* watchdog timer handling */

drivers/watchdog/mpc5200_wdt.c

@@ -9,8 +9,8 @@
 #include <asm/mpc52xx.h>
 
 
-#define GPT_MODE_WDT		(1<<15)
-#define GPT_MODE_CE		(1<<12)
+#define GPT_MODE_WDT		(1 << 15)
+#define GPT_MODE_CE		(1 << 12)
 #define GPT_MODE_MS_TIMER	(0x4)
 
 

drivers/watchdog/mpcore_wdt.c

@@ -5,7 +5,7 @@
  *
  *	Based on the SoftDog driver:
  *	(c) Copyright 1996 Alan Cox <alan@lxorguk.ukuu.org.uk>,
- * 						All Rights Reserved.
+ *						All Rights Reserved.
  *
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU General Public License

drivers/watchdog/mtx-1_wdt.c

@@ -5,7 +5,7 @@
  *							All Rights Reserved.
  *                              http://www.4g-systems.biz
  *
- * 	(C) Copyright 2007 OpenWrt.org, Florian Fainelli <florian@openwrt.org>
+ *	(C) Copyright 2007 OpenWrt.org, Florian Fainelli <florian@openwrt.org>
  *
  *      This program is free software; you can redistribute it and/or
  *      modify it under the terms of the GNU General Public License

drivers/watchdog/orion5x_wdt.c

@@ -16,11 +16,13 @@
 #include <linux/kernel.h>
 #include <linux/fs.h>
 #include <linux/miscdevice.h>
+#include <linux/platform_device.h>
 #include <linux/watchdog.h>
 #include <linux/init.h>
 #include <linux/uaccess.h>
 #include <linux/io.h>
 #include <linux/spinlock.h>
+#include <plat/orion5x_wdt.h>
 
 /*
  * Watchdog timer block registers.
@@ -29,13 +31,14 @@
 #define  WDT_EN			0x0010
 #define WDT_VAL			(TIMER_VIRT_BASE + 0x0024)
 
-#define ORION5X_TCLK		166666667
-#define WDT_MAX_DURATION	(0xffffffff / ORION5X_TCLK)
+#define WDT_MAX_CYCLE_COUNT	0xffffffff
 #define WDT_IN_USE		0
 #define WDT_OK_TO_CLOSE		1
 
 static int nowayout = WATCHDOG_NOWAYOUT;
-static int heartbeat =  WDT_MAX_DURATION;	/* (seconds) */
+static int heartbeat = -1;		/* module parameter (seconds) */
+static unsigned int wdt_max_duration;	/* (seconds) */
+static unsigned int wdt_tclk;
 static unsigned long wdt_status;
 static spinlock_t wdt_lock;
 
@@ -46,7 +49,7 @@ static void wdt_enable(void)
 	spin_lock(&wdt_lock);
 
 	/* Set watchdog duration */
-	writel(ORION5X_TCLK * heartbeat, WDT_VAL);
+	writel(wdt_tclk * heartbeat, WDT_VAL);
 
 	/* Clear watchdog timer interrupt */
 	reg = readl(BRIDGE_CAUSE);
@@ -88,7 +91,7 @@ static void wdt_disable(void)
 static int orion5x_wdt_get_timeleft(int *time_left)
 {
 	spin_lock(&wdt_lock);
-	*time_left = readl(WDT_VAL) / ORION5X_TCLK;
+	*time_left = readl(WDT_VAL) / wdt_tclk;
 	spin_unlock(&wdt_lock);
 	return 0;
 }
@@ -158,7 +161,7 @@ static long orion5x_wdt_ioctl(struct file *file, unsigned int cmd,
 		if (ret)
 			break;
 
-		if (time <= 0 || time > WDT_MAX_DURATION) {
+		if (time <= 0 || time > wdt_max_duration) {
 			ret = -EINVAL;
 			break;
 		}
@@ -210,23 +213,69 @@ static struct miscdevice orion5x_wdt_miscdev = {
 	.fops		= &orion5x_wdt_fops,
 };
 
-static int __init orion5x_wdt_init(void)
+static int __devinit orion5x_wdt_probe(struct platform_device *pdev)
 {
+	struct orion5x_wdt_platform_data *pdata = pdev->dev.platform_data;
 	int ret;
 
-	spin_lock_init(&wdt_lock);
+	if (pdata) {
+		wdt_tclk = pdata->tclk;
+	} else {
+		printk(KERN_ERR "Orion5x Watchdog misses platform data\n");
+		return -ENODEV;
+	}
+
+	if (orion5x_wdt_miscdev.parent)
+		return -EBUSY;
+	orion5x_wdt_miscdev.parent = &pdev->dev;
+
+	wdt_max_duration = WDT_MAX_CYCLE_COUNT / wdt_tclk;
+	if (heartbeat <= 0 || heartbeat > wdt_max_duration)
+		heartbeat = wdt_max_duration;
 
 	ret = misc_register(&orion5x_wdt_miscdev);
-	if (ret == 0)
-		printk("Orion5x Watchdog Timer: heartbeat %d sec\n",
-								heartbeat);
+	if (ret)
+		return ret;
+
+	printk(KERN_INFO "Orion5x Watchdog Timer: Initial timeout %d sec%s\n",
+				heartbeat, nowayout ? ", nowayout" : "");
+	return 0;
+}
+
+static int __devexit orion5x_wdt_remove(struct platform_device *pdev)
+{
+	int ret;
+
+	if (test_bit(WDT_IN_USE, &wdt_status)) {
+		wdt_disable();
+		clear_bit(WDT_IN_USE, &wdt_status);
+	}
+
+	ret = misc_deregister(&orion5x_wdt_miscdev);
+	if (!ret)
+		orion5x_wdt_miscdev.parent = NULL;
 
 	return ret;
 }
 
+static struct platform_driver orion5x_wdt_driver = {
+	.probe		= orion5x_wdt_probe,
+	.remove		= __devexit_p(orion5x_wdt_remove),
+	.driver		= {
+		.owner	= THIS_MODULE,
+		.name	= "orion5x_wdt",
+	},
+};
+
+static int __init orion5x_wdt_init(void)
+{
+	spin_lock_init(&wdt_lock);
+	return platform_driver_register(&orion5x_wdt_driver);
+}
+
 static void __exit orion5x_wdt_exit(void)
 {
-	misc_deregister(&orion5x_wdt_miscdev);
+	platform_driver_unregister(&orion5x_wdt_driver);
 }
 
 module_init(orion5x_wdt_init);
@@ -236,8 +285,7 @@ MODULE_AUTHOR("Sylver Bruneau <sylver.bruneau@googlemail.com>");
 MODULE_DESCRIPTION("Orion5x Processor Watchdog");
 
 module_param(heartbeat, int, 0);
-MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds (default is "
-					__MODULE_STRING(WDT_MAX_DURATION) ")");
+MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds");
 
 module_param(nowayout, int, 0);
 MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started");

drivers/watchdog/pc87413_wdt.c

@@ -536,7 +536,8 @@ static int __init pc87413_init(void)
 
 	ret = misc_register(&pc87413_miscdev);
 	if (ret != 0) {
-		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, ret);
 		unregister_reboot_notifier(&pc87413_notifier);
 		return ret;
@@ -574,7 +575,8 @@ static void __exit pc87413_exit(void)
 module_init(pc87413_init);
 module_exit(pc87413_exit);
 
-MODULE_AUTHOR("Sven Anders <anders@anduras.de>, Marcus Junker <junker@anduras.de>,");
+MODULE_AUTHOR("Sven Anders <anders@anduras.de>, "
+		"Marcus Junker <junker@anduras.de>,");
 MODULE_DESCRIPTION("PC87413 WDT driver");
 MODULE_LICENSE("GPL");
 

drivers/watchdog/pcwd.c

@@ -24,25 +24,25 @@
  *		version reporting.  Added read routine for temperature.
  *		Removed some extra defines, added an autodetect Revision
  *		routine.
- * 961006       Revised some documentation, fixed some cosmetic bugs.  Made
- *              drivers to panic the system if it's overheating at bootup.
+ * 961006	Revised some documentation, fixed some cosmetic bugs.  Made
+ *		drivers to panic the system if it's overheating at bootup.
  * 961118	Changed some verbiage on some of the output, tidied up
  *		code bits, and added compatibility to 2.1.x.
- * 970912       Enabled board on open and disable on close.
+ * 970912	Enabled board on open and disable on close.
  * 971107	Took account of recent VFS changes (broke read).
- * 971210       Disable board on initialisation in case board already ticking.
- * 971222       Changed open/close for temperature handling
- *              Michael Meskes <meskes@debian.org>.
- * 980112       Used minor numbers from include/linux/miscdevice.h
- * 990403       Clear reset status after reading control status register in
- *              pcwd_showprevstate(). [Marc Boucher <marc@mbsi.ca>]
+ * 971210	Disable board on initialisation in case board already ticking.
+ * 971222	Changed open/close for temperature handling
+ *		Michael Meskes <meskes@debian.org>.
+ * 980112	Used minor numbers from include/linux/miscdevice.h
+ * 990403	Clear reset status after reading control status register in
+ *		pcwd_showprevstate(). [Marc Boucher <marc@mbsi.ca>]
  * 990605	Made changes to code to support Firmware 1.22a, added
  *		fairly useless proc entry.
  * 990610	removed said useless proc code for the merge <alan>
  * 000403	Removed last traces of proc code. <davej>
  * 011214	Added nowayout module option to override
  *		CONFIG_WATCHDOG_NOWAYOUT <Matt_Domsch@dell.com>
- *              Added timeout module option to override default
+ *		Added timeout module option to override default
  */
 
 /*
@@ -76,8 +76,7 @@
 #define WATCHDOG_DRIVER_NAME "ISA-PC Watchdog"
 #define WATCHDOG_NAME "pcwd"
 #define PFX WATCHDOG_NAME ": "
-#define DRIVER_VERSION WATCHDOG_DRIVER_NAME " driver, v" WATCHDOG_VERSION " (" WATCHDOG_DATE ")\n"
-#define WD_VER WATCHDOG_VERSION " (" WATCHDOG_DATE ")"
+#define DRIVER_VERSION WATCHDOG_DRIVER_NAME " driver, v" WATCHDOG_VERSION "\n"
 
 /*
  * It should be noted that PCWD_REVISION_B was removed because A and B
@@ -200,7 +199,9 @@ MODULE_PARM_DESC(debug,
 #define WATCHDOG_HEARTBEAT 0
 static int heartbeat = WATCHDOG_HEARTBEAT;
 module_param(heartbeat, int, 0);
-MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (2 <= heartbeat <= 7200 or 0=delay-time from dip-switches, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
+MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. "
+	"(2 <= heartbeat <= 7200 or 0=delay-time from dip-switches, default="
+				__MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
 
 static int nowayout = WATCHDOG_NOWAYOUT;
 module_param(nowayout, int, 0);
@@ -239,7 +240,8 @@ static int send_isa_command(int cmd)
 	}
 
 	if (debug >= DEBUG)
-		printk(KERN_DEBUG PFX "received following data for cmd=0x%02x: port0=0x%02x last_port0=0x%02x\n",
+		printk(KERN_DEBUG PFX "received following data for "
+			"cmd=0x%02x: port0=0x%02x last_port0=0x%02x\n",
 			cmd, port0, last_port0);
 
 	return port0;
@@ -339,10 +341,12 @@ static void pcwd_show_card_info(void)
 							pcwd_private.io_addr);
 	else if (pcwd_private.revision == PCWD_REVISION_C) {
 		pcwd_get_firmware();
-		printk(KERN_INFO PFX "ISA-PC Watchdog (REV.C) detected at port 0x%04x (Firmware version: %s)\n",
+		printk(KERN_INFO PFX "ISA-PC Watchdog (REV.C) detected at port "
+			"0x%04x (Firmware version: %s)\n",
 			pcwd_private.io_addr, pcwd_private.fw_ver_str);
 		option_switches = pcwd_get_option_switches();
-		printk(KERN_INFO PFX "Option switches (0x%02x): Temperature Reset Enable=%s, Power On Delay=%s\n",
+		printk(KERN_INFO PFX "Option switches (0x%02x): "
+			"Temperature Reset Enable=%s, Power On Delay=%s\n",
 			option_switches,
 			((option_switches & 0x10) ? "ON" : "OFF"),
 			((option_switches & 0x08) ? "ON" : "OFF"));
@@ -358,7 +362,8 @@ static void pcwd_show_card_info(void)
 		printk(KERN_INFO PFX "Temperature Option Detected\n");
 
 	if (pcwd_private.boot_status & WDIOF_CARDRESET)
-		printk(KERN_INFO PFX "Previous reboot was caused by the card\n");
+		printk(KERN_INFO PFX
+			"Previous reboot was caused by the card\n");
 
 	if (pcwd_private.boot_status & WDIOF_OVERHEAT) {
 		printk(KERN_EMERG PFX
@@ -871,7 +876,7 @@ static int __devinit pcwd_isa_probe(struct device *dev, unsigned int id)
 	cards_found++;
 	if (cards_found == 1)
 		printk(KERN_INFO PFX "v%s Ken Hollis (kenji@bitgate.com)\n",
-								WD_VER);
+							WATCHDOG_VERSION);
 
 	if (cards_found > 1) {
 		printk(KERN_ERR PFX "This driver only supports 1 device\n");
@@ -1026,7 +1031,8 @@ static void __exit pcwd_cleanup_module(void)
 module_init(pcwd_init_module);
 module_exit(pcwd_cleanup_module);
 
-MODULE_AUTHOR("Ken Hollis <kenji@bitgate.com>, Wim Van Sebroeck <wim@iguana.be>");
+MODULE_AUTHOR("Ken Hollis <kenji@bitgate.com>, "
+		"Wim Van Sebroeck <wim@iguana.be>");
 MODULE_DESCRIPTION("Berkshire ISA-PC Watchdog driver");
 MODULE_VERSION(WATCHDOG_VERSION);
 MODULE_LICENSE("GPL");

drivers/watchdog/pnx4008_wdt.c

@@ -54,22 +54,22 @@
 
 /* WDTIM_CTRL bit definitions */
 #define COUNT_ENAB     1
-#define RESET_COUNT    (1<<1)
-#define DEBUG_EN       (1<<2)
+#define RESET_COUNT    (1 << 1)
+#define DEBUG_EN       (1 << 2)
 
 /* WDTIM_MCTRL bit definitions */
 #define MR0_INT        1
 #undef  RESET_COUNT0
-#define RESET_COUNT0   (1<<2)
-#define STOP_COUNT0    (1<<2)
-#define M_RES1         (1<<3)
-#define M_RES2         (1<<4)
-#define RESFRC1        (1<<5)
-#define RESFRC2        (1<<6)
+#define RESET_COUNT0   (1 << 2)
+#define STOP_COUNT0    (1 << 2)
+#define M_RES1         (1 << 3)
+#define M_RES2         (1 << 4)
+#define RESFRC1        (1 << 5)
+#define RESFRC2        (1 << 6)
 
 /* WDTIM_EMR bit definitions */
 #define EXT_MATCH0      1
-#define MATCH_OUTPUT_HIGH (2<<4)	/*a MATCH_CTRL setting */
+#define MATCH_OUTPUT_HIGH (2 << 4)	/*a MATCH_CTRL setting */
 
 /* WDTIM_RES bit definitions */
 #define WDOG_RESET      1	/* read only */

drivers/watchdog/rc32434_wdt.c

@@ -17,27 +17,29 @@
  *
  */
 
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/fs.h>
-#include <linux/mm.h>
-#include <linux/miscdevice.h>
-#include <linux/watchdog.h>
-#include <linux/reboot.h>
-#include <linux/smp_lock.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/uaccess.h>
-
-#include <asm/bootinfo.h>
-#include <asm/time.h>
-#include <asm/mach-rc32434/integ.h>
-
-#define VERSION "0.4"
+#include <linux/module.h>		/* For module specific items */
+#include <linux/moduleparam.h>		/* For new moduleparam's */
+#include <linux/types.h>		/* For standard types (like size_t) */
+#include <linux/errno.h>		/* For the -ENODEV/... values */
+#include <linux/kernel.h>		/* For printk/panic/... */
+#include <linux/fs.h>			/* For file operations */
+#include <linux/miscdevice.h>		/* For MODULE_ALIAS_MISCDEV
+							(WATCHDOG_MINOR) */
+#include <linux/watchdog.h>		/* For the watchdog specific items */
+#include <linux/init.h>			/* For __init/__exit/... */
+#include <linux/platform_device.h>	/* For platform_driver framework */
+#include <linux/spinlock.h>		/* For spin_lock/spin_unlock/... */
+#include <linux/uaccess.h>		/* For copy_to_user/put_user/... */
+
+#include <asm/mach-rc32434/integ.h>	/* For the Watchdog registers */
+
+#define PFX KBUILD_MODNAME ": "
+
+#define VERSION "1.0"
 
 static struct {
 	unsigned long inuse;
+	spinlock_t io_lock;
 } rc32434_wdt_device;
 
 static struct integ __iomem *wdt_reg;
@@ -58,6 +60,9 @@ extern unsigned int idt_cpu_freq;
 #define WATCHDOG_TIMEOUT 20
 
 static int timeout = WATCHDOG_TIMEOUT;
+module_param(timeout, int, 0);
+MODULE_PARM_DESC(timeout, "Watchdog timeout value, in seconds (default="
+		WATCHDOG_TIMEOUT ")");
 
 static int nowayout = WATCHDOG_NOWAYOUT;
 module_param(nowayout, int, 0);
@@ -68,10 +73,29 @@ MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default="
 #define SET_BITS(addr, or, nand) \
 	writel((readl(&addr) | or) & ~nand, &addr)
 
+static int rc32434_wdt_set(int new_timeout)
+{
+	int max_to = WTCOMP2SEC((u32)-1);
+
+	if (new_timeout < 0 || new_timeout > max_to) {
+		printk(KERN_ERR PFX "timeout value must be between 0 and %d",
+			max_to);
+		return -EINVAL;
+	}
+	timeout = new_timeout;
+	spin_lock(&rc32434_wdt_device.io_lock);
+	writel(SEC2WTCOMP(timeout), &wdt_reg->wtcompare);
+	spin_unlock(&rc32434_wdt_device.io_lock);
+
+	return 0;
+}
+
 static void rc32434_wdt_start(void)
 {
 	u32 or, nand;
 
+	spin_lock(&rc32434_wdt_device.io_lock);
+
 	/* zero the counter before enabling */
 	writel(0, &wdt_reg->wtcount);
 
@@ -85,38 +109,35 @@ static void rc32434_wdt_start(void)
 
 	SET_BITS(wdt_reg->errcs, or, nand);
 
+	/* set the timeout (either default or based on module param) */
+	rc32434_wdt_set(timeout);
+
 	/* reset WTC timeout bit and enable WDT */
 	nand = 1 << RC32434_WTC_TO;
 	or = 1 << RC32434_WTC_EN;
 
 	SET_BITS(wdt_reg->wtc, or, nand);
+
+	spin_unlock(&rc32434_wdt_device.io_lock);
+	printk(KERN_INFO PFX "Started watchdog timer.\n");
 }
 
 static void rc32434_wdt_stop(void)
 {
+	spin_lock(&rc32434_wdt_device.io_lock);
+
 	/* Disable WDT */
 	SET_BITS(wdt_reg->wtc, 0, 1 << RC32434_WTC_EN);
-}
-
-static int rc32434_wdt_set(int new_timeout)
-{
-	int max_to = WTCOMP2SEC((u32)-1);
-
-	if (new_timeout < 0 || new_timeout > max_to) {
-		printk(KERN_ERR KBUILD_MODNAME
-			": timeout value must be between 0 and %d",
-			max_to);
-		return -EINVAL;
-	}
-	timeout = new_timeout;
-	writel(SEC2WTCOMP(timeout), &wdt_reg->wtcompare);
 
-	return 0;
+	spin_unlock(&rc32434_wdt_device.io_lock);
+	printk(KERN_INFO PFX "Stopped watchdog timer.\n");
 }
 
 static void rc32434_wdt_ping(void)
 {
+	spin_lock(&rc32434_wdt_device.io_lock);
 	writel(0, &wdt_reg->wtcount);
+	spin_unlock(&rc32434_wdt_device.io_lock);
 }
 
 static int rc32434_wdt_open(struct inode *inode, struct file *file)
@@ -137,11 +158,10 @@ static int rc32434_wdt_release(struct inode *inode, struct file *file)
 {
 	if (expect_close == 42) {
 		rc32434_wdt_stop();
-		printk(KERN_INFO KBUILD_MODNAME ": disabling watchdog timer\n");
 		module_put(THIS_MODULE);
 	} else {
-		printk(KERN_CRIT KBUILD_MODNAME
-			": device closed unexpectedly. WDT will not stop !\n");
+		printk(KERN_CRIT PFX
+			"device closed unexpectedly. WDT will not stop!\n");
 		rc32434_wdt_ping();
 	}
 	clear_bit(0, &rc32434_wdt_device.inuse);
@@ -185,8 +205,9 @@ static long rc32434_wdt_ioctl(struct file *file, unsigned int cmd,
 		.identity =		"RC32434_WDT Watchdog",
 	};
 	switch (cmd) {
-	case WDIOC_KEEPALIVE:
-		rc32434_wdt_ping();
+	case WDIOC_GETSUPPORT:
+		if (copy_to_user(argp, &ident, sizeof(ident)))
+			return -EFAULT;
 		break;
 	case WDIOC_GETSTATUS:
 	case WDIOC_GETBOOTSTATUS:
@@ -194,10 +215,6 @@ static long rc32434_wdt_ioctl(struct file *file, unsigned int cmd,
 		if (copy_to_user(argp, &value, sizeof(int)))
 			return -EFAULT;
 		break;
-	case WDIOC_GETSUPPORT:
-		if (copy_to_user(argp, &ident, sizeof(ident)))
-			return -EFAULT;
-		break;
 	case WDIOC_SETOPTIONS:
 		if (copy_from_user(&value, argp, sizeof(int)))
 			return -EFAULT;
@@ -212,6 +229,9 @@ static long rc32434_wdt_ioctl(struct file *file, unsigned int cmd,
 			return -EINVAL;
 		}
 		break;
+	case WDIOC_KEEPALIVE:
+		rc32434_wdt_ping();
+		break;
 	case WDIOC_SETTIMEOUT:
 		if (copy_from_user(&new_timeout, argp, sizeof(int)))
 			return -EFAULT;
@@ -227,7 +247,7 @@ static long rc32434_wdt_ioctl(struct file *file, unsigned int cmd,
 	return 0;
 }
 
-static struct file_operations rc32434_wdt_fops = {
+static const struct file_operations rc32434_wdt_fops = {
 	.owner		= THIS_MODULE,
 	.llseek		= no_llseek,
 	.write		= rc32434_wdt_write,
@@ -242,8 +262,8 @@ static struct miscdevice rc32434_wdt_miscdev = {
 	.fops	= &rc32434_wdt_fops,
 };
 
-static char banner[] __devinitdata = KERN_INFO KBUILD_MODNAME
-		": Watchdog Timer version " VERSION ", timer margin: %d sec\n";
+static char banner[] __devinitdata = KERN_INFO PFX
+		"Watchdog Timer version " VERSION ", timer margin: %d sec\n";
 
 static int __devinit rc32434_wdt_probe(struct platform_device *pdev)
 {
@@ -252,22 +272,33 @@ static int __devinit rc32434_wdt_probe(struct platform_device *pdev)
 
 	r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "rb532_wdt_res");
 	if (!r) {
-		printk(KERN_ERR KBUILD_MODNAME
-			"failed to retrieve resources\n");
+		printk(KERN_ERR PFX "failed to retrieve resources\n");
 		return -ENODEV;
 	}
 
 	wdt_reg = ioremap_nocache(r->start, r->end - r->start);
 	if (!wdt_reg) {
-		printk(KERN_ERR KBUILD_MODNAME
-			"failed to remap I/O resources\n");
+		printk(KERN_ERR PFX "failed to remap I/O resources\n");
 		return -ENXIO;
 	}
 
+	spin_lock_init(&rc32434_wdt_device.io_lock);
+
+	/* Make sure the watchdog is not running */
+	rc32434_wdt_stop();
+
+	/* Check that the heartbeat value is within it's range;
+	 * if not reset to the default */
+	if (rc32434_wdt_set(timeout)) {
+		rc32434_wdt_set(WATCHDOG_TIMEOUT);
+		printk(KERN_INFO PFX
+			"timeout value must be between 0 and %d\n",
+			WTCOMP2SEC((u32)-1));
+	}
+
 	ret = misc_register(&rc32434_wdt_miscdev);
 	if (ret < 0) {
-		printk(KERN_ERR KBUILD_MODNAME
-			"failed to register watchdog device\n");
+		printk(KERN_ERR PFX "failed to register watchdog device\n");
 		goto unmap;
 	}
 
@@ -287,22 +318,28 @@ static int __devexit rc32434_wdt_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static struct platform_driver rc32434_wdt = {
-	.probe	= rc32434_wdt_probe,
-	.remove	= __devexit_p(rc32434_wdt_remove),
-	.driver	= {
-		.name = "rc32434_wdt",
+static void rc32434_wdt_shutdown(struct platform_device *pdev)
+{
+	rc32434_wdt_stop();
+}
+
+static struct platform_driver rc32434_wdt_driver = {
+	.probe		= rc32434_wdt_probe,
+	.remove		= __devexit_p(rc32434_wdt_remove),
+	.shutdown	= rc32434_wdt_shutdown,
+	.driver		= {
+			.name = "rc32434_wdt",
 	}
 };
 
 static int __init rc32434_wdt_init(void)
 {
-	return platform_driver_register(&rc32434_wdt);
+	return platform_driver_register(&rc32434_wdt_driver);
 }
 
 static void __exit rc32434_wdt_exit(void)
 {
-	platform_driver_unregister(&rc32434_wdt);
+	platform_driver_unregister(&rc32434_wdt_driver);
 }
 
 module_init(rc32434_wdt_init);

drivers/watchdog/riowd.c

@@ -14,9 +14,8 @@
 #include <linux/watchdog.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
-
-#include <asm/io.h>
-#include <asm/uaccess.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
 
 
 /* RIO uses the NatSemi Super I/O power management logical device
@@ -86,8 +85,7 @@ static int riowd_release(struct inode *inode, struct file *filp)
 	return 0;
 }
 
-static int riowd_ioctl(struct inode *inode, struct file *filp,
-		       unsigned int cmd, unsigned long arg)
+static long riowd_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
 	static struct watchdog_info info = {
 		.options		= WDIOF_SETTIMEOUT,
@@ -147,7 +145,8 @@ static int riowd_ioctl(struct inode *inode, struct file *filp,
 	return 0;
 }
 
-static ssize_t riowd_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
+static ssize_t riowd_write(struct file *file, const char __user *buf,
+						size_t count, loff_t *ppos)
 {
 	struct riowd *p = riowd_device;
 
@@ -160,12 +159,12 @@ static ssize_t riowd_write(struct file *file, const char __user *buf, size_t cou
 }
 
 static const struct file_operations riowd_fops = {
-	.owner =	THIS_MODULE,
-	.llseek =	no_llseek,
-	.ioctl =	riowd_ioctl,
-	.open =		riowd_open,
-	.write =	riowd_write,
-	.release =	riowd_release,
+	.owner =		THIS_MODULE,
+	.llseek =		no_llseek,
+	.unlocked_ioctl =	riowd_ioctl,
+	.open =			riowd_open,
+	.write =		riowd_write,
+	.release =		riowd_release,
 };
 
 static struct miscdevice riowd_miscdev = {

drivers/watchdog/sa1100_wdt.c

 /*
  *	Watchdog driver for the SA11x0/PXA2xx
  *
- *      (c) Copyright 2000 Oleg Drokin <green@crimea.edu>
- *          Based on SoftDog driver by Alan Cox <alan@lxorguk.ukuu.org.uk>
+ *	(c) Copyright 2000 Oleg Drokin <green@crimea.edu>
+ *	    Based on SoftDog driver by Alan Cox <alan@lxorguk.ukuu.org.uk>
  *
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU General Public License
@@ -15,7 +15,7 @@
  *
  *	(c) Copyright 2000           Oleg Drokin <green@crimea.edu>
  *
- *      27/11/2000 Initial release
+ *	27/11/2000 Initial release
  */
 #include <linux/module.h>
 #include <linux/moduleparam.h>

drivers/watchdog/sbc60xxwdt.c

 /*
  *	60xx Single Board Computer Watchdog Timer driver for Linux 2.2.x
  *
- *      Based on acquirewdt.c by Alan Cox.
+ *	Based on acquirewdt.c by Alan Cox.
  *
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU General Public License

drivers/watchdog/sbc8360.c

@@ -4,12 +4,12 @@
  *	(c) Copyright 2005 Webcon, Inc.
  *
  *	Based on ib700wdt.c, which is based on advantechwdt.c which is based
- *      on acquirewdt.c which is based on wdt.c.
+ *	on acquirewdt.c which is based on wdt.c.
  *
  *	(c) Copyright 2001 Charles Howes <chowes@vsol.net>
  *
- *      Based on advantechwdt.c which is based on acquirewdt.c which
- *       is based on wdt.c.
+ *	Based on advantechwdt.c which is based on acquirewdt.c which
+ *	is based on wdt.c.
  *
  *	(c) Copyright 2000-2001 Marek Michalkiewicz <marekm@linux.org.pl>
  *
@@ -30,9 +30,9 @@
  *
  *	(c) Copyright 1995    Alan Cox <alan@lxorguk.ukuu.org.uk>
  *
- *      14-Dec-2001 Matt Domsch <Matt_Domsch@dell.com>
- *           Added nowayout module option to override CONFIG_WATCHDOG_NOWAYOUT
- *           Added timeout module option to override default
+ *	14-Dec-2001 Matt Domsch <Matt_Domsch@dell.com>
+ *	     Added nowayout module option to override CONFIG_WATCHDOG_NOWAYOUT
+ *	     Added timeout module option to override default
  *
  */
 

drivers/watchdog/sbc_epx_c3.c

@@ -35,7 +35,8 @@ static int epx_c3_alive;
 
 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) ")");
 
 #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 */

drivers/watchdog/sc1200wdt.c

@@ -71,7 +71,7 @@
 #define UART2_IRQ	0x04	/* Serial1 */
 /* 5 -7 are reserved */
 
-static char banner[] __initdata = KERN_INFO PFX SC1200_MODULE_VER;
+static char banner[] __initdata = PFX SC1200_MODULE_VER;
 static int timeout = 1;
 static int io = -1;
 static int io_len = 2;		/* for non plug and play */
@@ -392,7 +392,7 @@ static int __init sc1200wdt_init(void)
 {
 	int ret;
 
-	printk("%s\n", banner);
+	printk(KERN_INFO "%s\n", banner);
 
 #if defined CONFIG_PNP
 	if (isapnp) {
@@ -477,6 +477,7 @@ module_init(sc1200wdt_init);
 module_exit(sc1200wdt_exit);
 
 MODULE_AUTHOR("Zwane Mwaikambo <zwane@commfireservices.com>");
-MODULE_DESCRIPTION("Driver for National Semiconductor PC87307/PC97307 watchdog component");
+MODULE_DESCRIPTION(
+	"Driver for National Semiconductor PC87307/PC97307 watchdog component");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);

drivers/watchdog/sc520_wdt.c

 /*
  *	AMD Elan SC520 processor Watchdog Timer driver
  *
- *      Based on acquirewdt.c by Alan Cox,
- *           and sbc60xxwdt.c by Jakob Oestergaard <jakob@unthought.net>
+ *	Based on acquirewdt.c by Alan Cox,
+ *	     and sbc60xxwdt.c by Jakob Oestergaard <jakob@unthought.net>
  *
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU General Public License
@@ -11,7 +11,7 @@
  *
  *	The authors do NOT admit liability nor provide warranty for
  *	any of this software. This material is provided "AS-IS" in
- *      the hope that it may be useful for others.
+ *	the hope that it may be useful for others.
  *
  *	(c) Copyright 2001    Scott Jennings <linuxdrivers@oro.net>
  *           9/27 - 2001      [Initial release]
@@ -438,6 +438,7 @@ module_init(sc520_wdt_init);
 module_exit(sc520_wdt_unload);
 
 MODULE_AUTHOR("Scott and Bill Jennings");
-MODULE_DESCRIPTION("Driver for watchdog timer in AMD \"Elan\" SC520 uProcessor");
+MODULE_DESCRIPTION(
+	"Driver for watchdog timer in AMD \"Elan\" SC520 uProcessor");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);

drivers/watchdog/smsc37b787_wdt.c

@@ -2,7 +2,7 @@
  *	SMsC 37B787 Watchdog Timer driver for Linux 2.6.x.x
  *
  *	Based on acquirewdt.c by Alan Cox <alan@lxorguk.ukuu.org.uk>
- *       and some other existing drivers
+ *	and some other existing drivers
  *
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU General Public License
@@ -11,7 +11,7 @@
  *
  *	The authors do NOT admit liability nor provide warranty for
  *	any of this software. This material is provided "AS-IS" in
- *      the hope that it may be useful for others.
+ *	the hope that it may be useful for others.
  *
  *	(C) Copyright 2003-2006  Sven Anders <anders@anduras.de>
  *
@@ -22,19 +22,19 @@
  *
  *  Theory of operation:
  *
- *      A Watchdog Timer (WDT) is a hardware circuit that can
- *      reset the computer system in case of a software fault.
- *      You probably knew that already.
+ *	A Watchdog Timer (WDT) is a hardware circuit that can
+ *	reset the computer system in case of a software fault.
+ *	You probably knew that already.
  *
- *      Usually a userspace daemon will notify the kernel WDT driver
- *      via the /dev/watchdog special device file that userspace is
- *      still alive, at regular intervals.  When such a notification
- *      occurs, the driver will usually tell the hardware watchdog
- *      that everything is in order, and that the watchdog should wait
- *      for yet another little while to reset the system.
- *      If userspace fails (RAM error, kernel bug, whatever), the
- *      notifications cease to occur, and the hardware watchdog will
- *      reset the system (causing a reboot) after the timeout occurs.
+ *	Usually a userspace daemon will notify the kernel WDT driver
+ *	via the /dev/watchdog special device file that userspace is
+ *	still alive, at regular intervals.  When such a notification
+ *	occurs, the driver will usually tell the hardware watchdog
+ *	that everything is in order, and that the watchdog should wait
+ *	for yet another little while to reset the system.
+ *	If userspace fails (RAM error, kernel bug, whatever), the
+ *	notifications cease to occur, and the hardware watchdog will
+ *	reset the system (causing a reboot) after the timeout occurs.
  *
  * Create device with:
  *  mknod /dev/watchdog c 10 130
@@ -485,7 +485,7 @@ static long wb_smsc_wdt_ioctl(struct file *file,
 	case WDIOC_GETTIMEOUT:
 		new_timeout = timeout;
 		if (unit == UNIT_MINUTE)
-			  new_timeout *= 60;
+			new_timeout *= 60;
 		return put_user(new_timeout, uarg.i);
 	default:
 		return -ENOTTY;

drivers/watchdog/softdog.c

 /*
  *	SoftDog	0.07:	A Software Watchdog Device
  *
- *	(c) Copyright 1996 Alan Cox <alan@lxorguk.ukuu.org.uk>, All Rights Reserved.
+ *	(c) Copyright 1996 Alan Cox <alan@lxorguk.ukuu.org.uk>,
+ *							All Rights Reserved.
  *
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU General Public License
@@ -32,7 +33,7 @@
  *	Added WDIOC_GETTIMEOUT and WDIOC_SETTIMOUT.
  *
  *  20020530 Joel Becker <joel.becker@oracle.com>
- *  	Added Matt Domsch's nowayout module option.
+ *	Added Matt Domsch's nowayout module option.
  */
 
 #include <linux/module.h>

drivers/watchdog/w83697hf_wdt.c

@@ -462,6 +462,7 @@ module_init(wdt_init);
 module_exit(wdt_exit);
 
 MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Marcus Junker <junker@anduras.de>, Samuel Tardieu <sam@rfc1149.net>");
+MODULE_AUTHOR("Marcus Junker <junker@anduras.de>, "
+		"Samuel Tardieu <sam@rfc1149.net>");
 MODULE_DESCRIPTION("w83697hf/hg WDT driver");
 MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);

drivers/watchdog/w83697ug_wdt.c

@@ -2,7 +2,7 @@
  *	w83697ug/uf WDT driver
  *
  *	(c) Copyright 2008 Flemming Fransen <ff@nrvissing.net>
- *              reused original code to supoprt w83697ug/uf.
+ *		reused original code to support w83697ug/uf.
  *
  *	Based on w83627hf_wdt.c which is based on advantechwdt.c
  *	which is based on wdt.c.
@@ -79,7 +79,7 @@ MODULE_PARM_DESC(nowayout,
 							(same as EFER) */
 #define WDT_EFDR (WDT_EFIR+1) /* Extended Function Data Register */
 
-static void w83697ug_select_wd_register(void)
+static int w83697ug_select_wd_register(void)
 {
 	unsigned char c;
 	unsigned char version;
@@ -102,7 +102,7 @@ static void w83697ug_select_wd_register(void)
 
 	} else {
 		printk(KERN_ERR PFX "No W83697UG/UF could be found\n");
-		return;
+		return -ENODEV;
 	}
 
 	outb_p(0x07, WDT_EFER); /* point to logical device number reg */
@@ -110,6 +110,8 @@ static void w83697ug_select_wd_register(void)
 	outb_p(0x30, WDT_EFER); /* select CR30 */
 	c = inb_p(WDT_EFDR);
 	outb_p(c || 0x01, WDT_EFDR); /* set bit 0 to activate GPIO2 */
+
+	return 0;
 }
 
 static void w83697ug_unselect_wd_register(void)
@@ -117,11 +119,14 @@ static void w83697ug_unselect_wd_register(void)
 	outb_p(0xAA, WDT_EFER); /* Leave extended function mode */
 }
 
-static void w83697ug_init(void)
+static int w83697ug_init(void)
 {
+	int ret;
 	unsigned char t;
 
-	w83697ug_select_wd_register();
+	ret = w83697ug_select_wd_register();
+	if (ret != 0)
+		return ret;
 
 	outb_p(0xF6, WDT_EFER); /* Select CRF6 */
 	t = inb_p(WDT_EFDR);    /* read CRF6 */
@@ -137,13 +142,15 @@ static void w83697ug_init(void)
 	outb_p(t, WDT_EFDR);    /* Write back to CRF5 */
 
 	w83697ug_unselect_wd_register();
+	return 0;
 }
 
 static void wdt_ctrl(int timeout)
 {
 	spin_lock(&io_lock);
 
-	w83697ug_select_wd_register();
+	if (w83697ug_select_wd_register() < 0)
+		return;
 
 	outb_p(0xF4, WDT_EFER);    /* Select CRF4 */
 	outb_p(timeout, WDT_EFDR); /* Write Timeout counter to CRF4 */
@@ -347,7 +354,9 @@ static int __init wdt_init(void)
 		goto out;
 	}
 
-	w83697ug_init();
+	ret = w83697ug_init();
+	if (ret != 0)
+		goto unreg_regions;
 
 	ret = register_reboot_notifier(&wdt_notifier);
 	if (ret != 0) {

drivers/watchdog/w83977f_wdt.c

@@ -426,7 +426,7 @@ static long wdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 			return -EFAULT;
 
 		if (wdt_set_timeout(new_timeout))
-		    return -EINVAL;
+			return -EINVAL;
 
 		wdt_keepalive();
 		/* Fall */

drivers/watchdog/wd501p.h

@@ -11,9 +11,9 @@
  *
  *	http://www.cymru.net
  *
- *	This driver is provided under the GNU General Public License, incorporated
- *	herein by reference. The driver is provided without warranty or
- *	support.
+ *	This driver is provided under the GNU General Public License,
+ *	incorporated herein by reference. The driver is provided without
+ *	warranty or support.
  *
  *	Release 0.04.
  *
@@ -39,13 +39,13 @@
 /* programmable outputs: */
 #define WDT_PROGOUT		(io+15)	/* wr=enable, rd=disable */
 
-								/* FAN 501 500 */
-#define WDC_SR_WCCR		1	/* Active low */	/*  X   X   X  */
-#define WDC_SR_TGOOD		2				/*  X   X   -  */
-#define WDC_SR_ISOI0		4				/*  X   X   X  */
-#define WDC_SR_ISII1		8				/*  X   X   X  */
-#define WDC_SR_FANGOOD		16				/*  X   -   -  */
-#define WDC_SR_PSUOVER		32	/* Active low */	/*  X   X   -  */
-#define WDC_SR_PSUUNDR		64	/* Active low */	/*  X   X   -  */
-#define WDC_SR_IRQ		128	/* Active low */	/*  X   X   X  */
+							 /* FAN 501 500 */
+#define WDC_SR_WCCR		1	/* Active low */ /*  X   X   X  */
+#define WDC_SR_TGOOD		2			 /*  X   X   -  */
+#define WDC_SR_ISOI0		4			 /*  X   X   X  */
+#define WDC_SR_ISII1		8			 /*  X   X   X  */
+#define WDC_SR_FANGOOD		16			 /*  X   -   -  */
+#define WDC_SR_PSUOVER		32	/* Active low */ /*  X   X   -  */
+#define WDC_SR_PSUUNDR		64	/* Active low */ /*  X   X   -  */
+#define WDC_SR_IRQ		128	/* Active low */ /*  X   X   X  */
 

drivers/watchdog/wdt.c

 /*
- *	Industrial Computer Source WDT500/501 driver
+ *	Industrial Computer Source WDT501 driver
  *
  *	(c) Copyright 1996-1997 Alan Cox <alan@lxorguk.ukuu.org.uk>,
  *						All Rights Reserved.
@@ -82,14 +82,16 @@ MODULE_PARM_DESC(io, "WDT io port (default=0x240)");
 module_param(irq, int, 0);
 MODULE_PARM_DESC(irq, "WDT irq (default=11)");
 
-#ifdef CONFIG_WDT_501
 /* Support for the Fan Tachometer on the WDT501-P */
 static int tachometer;
-
 module_param(tachometer, int, 0);
 MODULE_PARM_DESC(tachometer,
 		"WDT501-P Fan Tachometer support (0=disable, default=0)");
-#endif /* CONFIG_WDT_501 */
+
+static int type = 500;
+module_param(type, int, 0);
+MODULE_PARM_DESC(type,
+		"WDT501-P Card type (500 or 501 , default=500)");
 
 /*
  *	Programming support
@@ -158,7 +160,7 @@ static int wdt_stop(void)
  *	reloading the cascade counter.
  */
 
-static int wdt_ping(void)
+static void wdt_ping(void)
 {
 	unsigned long flags;
 	spin_lock_irqsave(&wdt_lock, flags);
@@ -169,7 +171,6 @@ static int wdt_ping(void)
 	wdt_ctr_load(1, wd_heartbeat);	/* Heartbeat */
 	outb_p(0, WDT_DC);		/* Enable watchdog */
 	spin_unlock_irqrestore(&wdt_lock, flags);
-	return 0;
 }
 
 /**
@@ -193,7 +194,6 @@ static int wdt_set_heartbeat(int t)
 
 /**
  *	wdt_get_status:
- *	@status:		the new status.
  *
  *	Extract the status information from a WDT watchdog device. There are
  *	several board variants so we have to know which bits are valid. Some
@@ -202,36 +202,35 @@ static int wdt_set_heartbeat(int t)
  *	we then map the bits onto the status ioctl flags.
  */
 
-static int wdt_get_status(int *status)
+static int wdt_get_status(void)
 {
 	unsigned char new_status;
+	int status = 0;
 	unsigned long flags;
 
 	spin_lock_irqsave(&wdt_lock, flags);
 	new_status = inb_p(WDT_SR);
 	spin_unlock_irqrestore(&wdt_lock, flags);
 
-	*status = 0;
 	if (new_status & WDC_SR_ISOI0)
-		*status |= WDIOF_EXTERN1;
+		status |= WDIOF_EXTERN1;
 	if (new_status & WDC_SR_ISII1)
-		*status |= WDIOF_EXTERN2;
-#ifdef CONFIG_WDT_501
-	if (!(new_status & WDC_SR_TGOOD))
-		*status |= WDIOF_OVERHEAT;
-	if (!(new_status & WDC_SR_PSUOVER))
-		*status |= WDIOF_POWEROVER;
-	if (!(new_status & WDC_SR_PSUUNDR))
-		*status |= WDIOF_POWERUNDER;
-	if (tachometer) {
-		if (!(new_status & WDC_SR_FANGOOD))
-			*status |= WDIOF_FANFAULT;
+		status |= WDIOF_EXTERN2;
+	if (type == 501) {
+		if (!(new_status & WDC_SR_TGOOD))
+			status |= WDIOF_OVERHEAT;
+		if (!(new_status & WDC_SR_PSUOVER))
+			status |= WDIOF_POWEROVER;
+		if (!(new_status & WDC_SR_PSUUNDR))
+			status |= WDIOF_POWERUNDER;
+		if (tachometer) {
+			if (!(new_status & WDC_SR_FANGOOD))
+				status |= WDIOF_FANFAULT;
+		}
 	}
-#endif /* CONFIG_WDT_501 */
-	return 0;
+	return status;
 }
 
-#ifdef CONFIG_WDT_501
 /**
  *	wdt_get_temperature:
  *
@@ -239,7 +238,7 @@ static int wdt_get_status(int *status)
  *	farenheit. It was designed by an imperial measurement luddite.
  */
 
-static int wdt_get_temperature(int *temperature)
+static int wdt_get_temperature(void)
 {
 	unsigned short c;
 	unsigned long flags;
@@ -247,10 +246,18 @@ static int wdt_get_temperature(int *temperature)
 	spin_lock_irqsave(&wdt_lock, flags);
 	c = inb_p(WDT_RT);
 	spin_unlock_irqrestore(&wdt_lock, flags);
-	*temperature = (c * 11 / 15) + 7;
-	return 0;
+	return (c * 11 / 15) + 7;
+}
+
+static void wdt_decode_501(int status)
+{
+	if (!(status & WDC_SR_TGOOD))
+		printk(KERN_CRIT "Overheat alarm.(%d)\n", inb_p(WDT_RT));
+	if (!(status & WDC_SR_PSUOVER))
+		printk(KERN_CRIT "PSU over voltage.\n");
+	if (!(status & WDC_SR_PSUUNDR))
+		printk(KERN_CRIT "PSU under voltage.\n");
 }
-#endif /* CONFIG_WDT_501 */
 
 /**
  *	wdt_interrupt:
@@ -275,18 +282,13 @@ static irqreturn_t wdt_interrupt(int irq, void *dev_id)
 
 	printk(KERN_CRIT "WDT status %d\n", status);
 
-#ifdef CONFIG_WDT_501
-	if (!(status & WDC_SR_TGOOD))
-		printk(KERN_CRIT "Overheat alarm.(%d)\n", inb_p(WDT_RT));
-	if (!(status & WDC_SR_PSUOVER))
-		printk(KERN_CRIT "PSU over voltage.\n");
-	if (!(status & WDC_SR_PSUUNDR))
-		printk(KERN_CRIT "PSU under voltage.\n");
-	if (tachometer) {
-		if (!(status & WDC_SR_FANGOOD))
-			printk(KERN_CRIT "Possible fan fault.\n");
+	if (type == 501) {
+		wdt_decode_501(status);
+		if (tachometer) {
+			if (!(status & WDC_SR_FANGOOD))
+				printk(KERN_CRIT "Possible fan fault.\n");
+		}
 	}
-#endif /* CONFIG_WDT_501 */
 	if (!(status & WDC_SR_WCCR)) {
 #ifdef SOFTWARE_REBOOT
 #ifdef ONLY_TESTING
@@ -366,17 +368,18 @@ static long wdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 
 	/* Add options according to the card we have */
 	ident.options |= (WDIOF_EXTERN1|WDIOF_EXTERN2);
-#ifdef CONFIG_WDT_501
-	ident.options |= (WDIOF_OVERHEAT|WDIOF_POWERUNDER|WDIOF_POWEROVER);
-	if (tachometer)
-		ident.options |= WDIOF_FANFAULT;
-#endif /* CONFIG_WDT_501 */
+	if (type == 501) {
+		ident.options |= (WDIOF_OVERHEAT|WDIOF_POWERUNDER|
+							WDIOF_POWEROVER);
+		if (tachometer)
+			ident.options |= WDIOF_FANFAULT;
+	}
 
 	switch (cmd) {
 	case WDIOC_GETSUPPORT:
 		return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
 	case WDIOC_GETSTATUS:
-		wdt_get_status(&status);
+		status = wdt_get_status();
 		return put_user(status, p);
 	case WDIOC_GETBOOTSTATUS:
 		return put_user(0, p);
@@ -446,7 +449,6 @@ static int wdt_release(struct inode *inode, struct file *file)
 	return 0;
 }
 
-#ifdef CONFIG_WDT_501
 /**
  *	wdt_temp_read:
  *	@file: file handle to the watchdog board
@@ -461,10 +463,7 @@ static int wdt_release(struct inode *inode, struct file *file)
 static ssize_t wdt_temp_read(struct file *file, char __user *buf,
 						size_t count, loff_t *ptr)
 {
-	int temperature;
-
-	if (wdt_get_temperature(&temperature))
-		return -EFAULT;
+	int temperature = wdt_get_temperature();
 
 	if (copy_to_user(buf, &temperature, 1))
 		return -EFAULT;
@@ -497,7 +496,6 @@ static int wdt_temp_release(struct inode *inode, struct file *file)
 {
 	return 0;
 }
-#endif /* CONFIG_WDT_501 */
 
 /**
  *	notify_sys:
@@ -539,7 +537,6 @@ static struct miscdevice wdt_miscdev = {
 	.fops	= &wdt_fops,
 };
 
-#ifdef CONFIG_WDT_501
 static const struct file_operations wdt_temp_fops = {
 	.owner		= THIS_MODULE,
 	.llseek		= no_llseek,
@@ -553,7 +550,6 @@ static struct miscdevice temp_miscdev = {
 	.name	= "temperature",
 	.fops	= &wdt_temp_fops,
 };
-#endif /* CONFIG_WDT_501 */
 
 /*
  *	The WDT card needs to learn about soft shutdowns in order to
@@ -577,9 +573,8 @@ static struct notifier_block wdt_notifier = {
 static void __exit wdt_exit(void)
 {
 	misc_deregister(&wdt_miscdev);
-#ifdef CONFIG_WDT_501
-	misc_deregister(&temp_miscdev);
-#endif /* CONFIG_WDT_501 */
+	if (type == 501)
+		misc_deregister(&temp_miscdev);
 	unregister_reboot_notifier(&wdt_notifier);
 	free_irq(irq, NULL);
 	release_region(io, 8);
@@ -597,12 +592,17 @@ static int __init wdt_init(void)
 {
 	int ret;
 
+	if (type != 500 && type != 501) {
+		printk(KERN_ERR "wdt: unknown card type '%d'.\n", type);
+		return -ENODEV;
+	}
+
 	/* Check that the heartbeat value is within it's range;
 	   if not reset to the default */
 	if (wdt_set_heartbeat(heartbeat)) {
 		wdt_set_heartbeat(WD_TIMO);
-		printk(KERN_INFO "wdt: heartbeat value must be 0 < heartbeat < 65536, using %d\n",
-			WD_TIMO);
+		printk(KERN_INFO "wdt: heartbeat value must be "
+			"0 < heartbeat < 65536, using %d\n", WD_TIMO);
 	}
 
 	if (!request_region(io, 8, "wdt501p")) {
@@ -625,15 +625,14 @@ static int __init wdt_init(void)
 		goto outirq;
 	}
 
-#ifdef CONFIG_WDT_501
-	ret = misc_register(&temp_miscdev);
-	if (ret) {
-		printk(KERN_ERR
-			"wdt: cannot register miscdev on minor=%d (err=%d)\n",
-							TEMP_MINOR, ret);
-		goto outrbt;
+	if (type == 501) {
+		ret = misc_register(&temp_miscdev);
+		if (ret) {
+			printk(KERN_ERR "wdt: cannot register miscdev "
+				"on minor=%d (err=%d)\n", TEMP_MINOR, ret);
+			goto outrbt;
+		}
 	}
-#endif /* CONFIG_WDT_501 */
 
 	ret = misc_register(&wdt_miscdev);
 	if (ret) {
@@ -643,28 +642,25 @@ static int __init wdt_init(void)
 		goto outmisc;
 	}
 
-	ret = 0;
-	printk(KERN_INFO "WDT500/501-P driver 0.10 at 0x%04x (Interrupt %d). heartbeat=%d sec (nowayout=%d)\n",
+	printk(KERN_INFO "WDT500/501-P driver 0.10 "
+		"at 0x%04x (Interrupt %d). heartbeat=%d sec (nowayout=%d)\n",
 		io, irq, heartbeat, nowayout);
-#ifdef CONFIG_WDT_501
-	printk(KERN_INFO "wdt: Fan Tachometer is %s\n",
+	if (type == 501)
+		printk(KERN_INFO "wdt: Fan Tachometer is %s\n",
 				(tachometer ? "Enabled" : "Disabled"));
-#endif /* CONFIG_WDT_501 */
-
-out:
-	return ret;
+	return 0;
 
 outmisc:
-#ifdef CONFIG_WDT_501
-	misc_deregister(&temp_miscdev);
+	if (type == 501)
+		misc_deregister(&temp_miscdev);
 outrbt:
-#endif /* CONFIG_WDT_501 */
 	unregister_reboot_notifier(&wdt_notifier);
 outirq:
 	free_irq(irq, NULL);
 outreg:
 	release_region(io, 8);
-	goto out;
+out:
+	return ret;
 }
 
 module_init(wdt_init);

drivers/watchdog/wdt977.c

@@ -401,7 +401,7 @@ static long wdt977_ioctl(struct file *file, unsigned int cmd,
 			return -EFAULT;
 
 		if (wdt977_set_timeout(new_timeout))
-		    return -EINVAL;
+			return -EINVAL;
 
 		wdt977_keepalive();
 		/* Fall */