[WATCHDOG 13/57] i6300esb: Style, unlocked_ioctl, cleanup

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/i6300esb.c

@@ -38,9 +38,8 @@
 #include <linux/init.h>
 #include <linux/pci.h>
 #include <linux/ioport.h>
-
-#include <asm/uaccess.h>
-#include <asm/io.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
 
 /* Module and version information */
 #define ESB_VERSION "0.03"
@@ -59,17 +58,17 @@
 #define ESB_RELOAD_REG  BASEADDR + 0x0c /* Reload register                   */
 
 /* Lock register bits */
-#define ESB_WDT_FUNC    ( 0x01 << 2 )   /* Watchdog functionality            */
-#define ESB_WDT_ENABLE  ( 0x01 << 1 )   /* Enable WDT                        */
-#define ESB_WDT_LOCK    ( 0x01 << 0 )   /* Lock (nowayout)                   */
+#define ESB_WDT_FUNC    (0x01 << 2)   /* Watchdog functionality            */
+#define ESB_WDT_ENABLE  (0x01 << 1)   /* Enable WDT                        */
+#define ESB_WDT_LOCK    (0x01 << 0)   /* Lock (nowayout)                   */
 
 /* Config register bits */
-#define ESB_WDT_REBOOT  ( 0x01 << 5 )   /* Enable reboot on timeout          */
-#define ESB_WDT_FREQ    ( 0x01 << 2 )   /* Decrement frequency               */
-#define ESB_WDT_INTTYPE ( 0x11 << 0 )   /* Interrupt type on timer1 timeout  */
+#define ESB_WDT_REBOOT  (0x01 << 5)   /* Enable reboot on timeout          */
+#define ESB_WDT_FREQ    (0x01 << 2)   /* Decrement frequency               */
+#define ESB_WDT_INTTYPE (0x11 << 0)   /* Interrupt type on timer1 timeout  */
 
 /* Reload register bits */
-#define ESB_WDT_RELOAD ( 0x01 << 8 )    /* prevent timeout                   */
+#define ESB_WDT_RELOAD  (0x01 << 8)    /* prevent timeout                   */
 
 /* Magic constants */
 #define ESB_UNLOCK1     0x80            /* Step 1 to unlock reset registers  */
@@ -84,14 +83,20 @@ static unsigned short triggered; /* The status of the watchdog upon boot */
 static char esb_expect_close;
 
 /* module parameters */
-#define WATCHDOG_HEARTBEAT 30   /* 30 sec default heartbeat (1<heartbeat<2*1023) */
+/* 30 sec default heartbeat (1 < heartbeat < 2*1023) */
+#define WATCHDOG_HEARTBEAT 30
 static int heartbeat = WATCHDOG_HEARTBEAT;  /* in seconds */
+
 module_param(heartbeat, int, 0);
-MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (1<heartbeat<2046, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
+MODULE_PARM_DESC(heartbeat,
+		"Watchdog heartbeat in seconds. (1<heartbeat<2046, default="
+				__MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
 
 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) ")");
 
 /*
  * Some i6300ESB specific functions
@@ -114,7 +119,6 @@ static void esb_timer_start(void)
 
 	/* Enable or Enable + Lock? */
 	val = 0x02 | (nowayout ? 0x01 : 0x00);
-
 	pci_write_config_byte(esb_pci, ESB_LOCK_REG, val);
 }
 
@@ -179,7 +183,7 @@ static int esb_timer_set_heartbeat(int time)
 	return 0;
 }
 
-static int esb_timer_read (void)
+static int esb_timer_read(void)
 {
 	u32 count;
 
@@ -195,35 +199,36 @@ static int esb_timer_read (void)
  * 	/dev/watchdog handling
  */
 
-static int esb_open (struct inode *inode, struct file *file)
+static int esb_open(struct inode *inode, struct file *file)
 {
 	/* /dev/watchdog can only be opened once */
 	if (test_and_set_bit(0, &timer_alive))
 		return -EBUSY;
 
 	/* Reload and activate timer */
-        esb_timer_keepalive ();
-        esb_timer_start ();
+	esb_timer_keepalive();
+	esb_timer_start();
 
 	return nonseekable_open(inode, file);
 }
 
-static int esb_release (struct inode *inode, struct file *file)
+static int esb_release(struct inode *inode, struct file *file)
 {
 	/* Shut off the timer. */
-        if (esb_expect_close == 42) {
-                esb_timer_stop ();
-        } else {
-                printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
-                esb_timer_keepalive ();
+	if (esb_expect_close == 42)
+		esb_timer_stop();
+	else {
+		printk(KERN_CRIT PFX
+				"Unexpected close, not stopping watchdog!\n");
+		esb_timer_keepalive();
 	}
 	clear_bit(0, &timer_alive);
 	esb_expect_close = 0;
 	return 0;
 }
 
-static ssize_t esb_write (struct file *file, const char __user *data,
-			  size_t len, loff_t * ppos)
+static ssize_t esb_write(struct file *file, const char __user *data,
+			  size_t len, loff_t *ppos)
 {
 	/* See if we got the magic character 'V' and reload the timer */
 	if (len) {
@@ -237,7 +242,7 @@ static ssize_t esb_write (struct file *file, const char __user *data,
 			/* 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))
+				if (get_user(c, data+i))
 					return -EFAULT;
 				if (c == 'V')
 					esb_expect_close = 42;
@@ -245,13 +250,12 @@ static ssize_t esb_write (struct file *file, const char __user *data,
 		}
 
 		/* someone wrote to us, we should reload the timer */
-		esb_timer_keepalive ();
+		esb_timer_keepalive();
 	}
 	return len;
 }
 
-static int esb_ioctl (struct inode *inode, struct file *file,
-		      unsigned int cmd, unsigned long arg)
+static long esb_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
 	int new_options, retval = -EINVAL;
 	int new_heartbeat;
@@ -268,52 +272,46 @@ static int esb_ioctl (struct inode *inode, struct file *file,
 	switch (cmd) {
 	case WDIOC_GETSUPPORT:
 		return copy_to_user(argp, &ident,
-					    sizeof (ident)) ? -EFAULT : 0;
+					sizeof(ident)) ? -EFAULT : 0;
 
 	case WDIOC_GETSTATUS:
-			return put_user (esb_timer_read(), p);
+		return put_user(esb_timer_read(), p);
 
 	case WDIOC_GETBOOTSTATUS:
-			return put_user (triggered, p);
+		return put_user(triggered, p);
 
 	case WDIOC_KEEPALIVE:
-                        esb_timer_keepalive ();
+		esb_timer_keepalive();
 		return 0;
 
 	case WDIOC_SETOPTIONS:
 	{
-                        if (get_user (new_options, p))
+		if (get_user(new_options, p))
 			return -EFAULT;
 
 		if (new_options & WDIOS_DISABLECARD) {
-                                esb_timer_stop ();
+			esb_timer_stop();
 			retval = 0;
 		}
 
 		if (new_options & WDIOS_ENABLECARD) {
-                                esb_timer_keepalive ();
-                                esb_timer_start ();
+			esb_timer_keepalive();
+			esb_timer_start();
 			retval = 0;
 		}
-
 		return retval;
 	}
-
 	case WDIOC_SETTIMEOUT:
 	{
 		if (get_user(new_heartbeat, p))
 			return -EFAULT;
-
 		if (esb_timer_set_heartbeat(new_heartbeat))
 			return -EINVAL;
-
-                        esb_timer_keepalive ();
+		esb_timer_keepalive();
 		/* Fall */
 	}
-
 	case WDIOC_GETTIMEOUT:
 		return put_user(heartbeat, p);
-
 	default:
 		return -ENOTTY;
 	}
@@ -323,13 +321,13 @@ static int esb_ioctl (struct inode *inode, struct file *file,
  *      Notify system
  */
 
-static int esb_notify_sys (struct notifier_block *this, unsigned long code, void *unused)
+static int esb_notify_sys(struct notifier_block *this,
+					unsigned long code, void *unused)
 {
-        if (code==SYS_DOWN || code==SYS_HALT) {
+	if (code == SYS_DOWN || code == SYS_HALT) {
 		/* Turn the WDT off */
-                esb_timer_stop ();
+		esb_timer_stop();
 	}
-
 	return NOTIFY_DONE;
 }
 
@@ -341,7 +339,7 @@ static const struct file_operations esb_fops = {
 	.owner = THIS_MODULE,
 	.llseek = no_llseek,
 	.write = esb_write,
-        .ioctl =        esb_ioctl,
+	.unlocked_ioctl = esb_ioctl,
 	.open = esb_open,
 	.release = esb_release,
 };
@@ -368,37 +366,31 @@ static struct pci_device_id esb_pci_tbl[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_9), },
 	{ 0, },                 /* End of list */
 };
-MODULE_DEVICE_TABLE (pci, esb_pci_tbl);
+MODULE_DEVICE_TABLE(pci, esb_pci_tbl);
 
 /*
  *      Init & exit routines
  */
 
-static unsigned char __init esb_getdevice (void)
+static unsigned char __init esb_getdevice(void)
 {
 	u8 val1;
 	unsigned short val2;
-
-        struct pci_dev *dev = NULL;
 	/*
 	 *      Find the PCI device
 	 */
 
-        for_each_pci_dev(dev) {
-                if (pci_match_id(esb_pci_tbl, dev)) {
-                        esb_pci = dev;
-                        break;
-                }
-	}
+	esb_pci = pci_get_device(PCI_VENDOR_ID_INTEL,
+					PCI_DEVICE_ID_INTEL_ESB_9, NULL);
 
 	if (esb_pci) {
 		if (pci_enable_device(esb_pci)) {
-			printk (KERN_ERR PFX "failed to enable device\n");
+			printk(KERN_ERR PFX "failed to enable device\n");
 			goto err_devput;
 		}
 
 		if (pci_request_region(esb_pci, 0, ESB_MODULE_NAME)) {
-			printk (KERN_ERR PFX "failed to request region\n");
+			printk(KERN_ERR PFX "failed to request region\n");
 			goto err_disable;
 		}
 
@@ -406,7 +398,7 @@ static unsigned char __init esb_getdevice (void)
 				   pci_resource_len(esb_pci, 0));
 		if (BASEADDR == NULL) {
 			/* Something's wrong here, BASEADDR has to be set */
-			printk (KERN_ERR PFX "failed to get BASEADDR\n");
+			printk(KERN_ERR PFX "failed to get BASEADDR\n");
 			goto err_release;
 		}
 
@@ -425,7 +417,7 @@ static unsigned char __init esb_getdevice (void)
 		/* Check that the WDT isn't already locked */
 		pci_read_config_byte(esb_pci, ESB_LOCK_REG, &val1);
 		if (val1 & ESB_WDT_LOCK)
-			printk (KERN_WARNING PFX "nowayout already set\n");
+			printk(KERN_WARNING PFX "nowayout already set\n");
 
 		/* Set the timer to watchdog mode and disable it for now */
 		pci_write_config_byte(esb_pci, ESB_LOCK_REG, 0x00);
@@ -452,40 +444,40 @@ static unsigned char __init esb_getdevice (void)
 	return 0;
 }
 
-static int __init watchdog_init (void)
+static int __init watchdog_init(void)
 {
 	int ret;
 
 	/* Check whether or not the hardware watchdog is there */
-        if (!esb_getdevice () || esb_pci == NULL)
+	if (!esb_getdevice() || esb_pci == NULL)
 		return -ENODEV;
 
-        /* Check that the heartbeat value is within it's range ; if not reset to the default */
-        if (esb_timer_set_heartbeat (heartbeat)) {
-                esb_timer_set_heartbeat (WATCHDOG_HEARTBEAT);
-                printk(KERN_INFO PFX "heartbeat value must be 1<heartbeat<2046, using %d\n",
+	/* Check that the heartbeat value is within it's range;
+	   if not reset to the default */
+	if (esb_timer_set_heartbeat(heartbeat)) {
+		esb_timer_set_heartbeat(WATCHDOG_HEARTBEAT);
+		printk(KERN_INFO PFX
+			"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);
+		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",
+		printk(KERN_ERR PFX
+			"cannot register miscdev on minor=%d (err=%d)\n",
 							WATCHDOG_MINOR, ret);
 		goto err_notifier;
 	}
-
-        esb_timer_stop ();
-
-        printk (KERN_INFO PFX "initialized (0x%p). heartbeat=%d sec (nowayout=%d)\n",
+	esb_timer_stop();
+	printk(KERN_INFO PFX
+		"initialized (0x%p). heartbeat=%d sec (nowayout=%d)\n",
 						BASEADDR, heartbeat, nowayout);
-
 	return 0;
 
 err_notifier:
@@ -501,11 +493,11 @@ static int __init watchdog_init (void)
 	return ret;
 }
 
-static void __exit watchdog_cleanup (void)
+static void __exit watchdog_cleanup(void)
 {
 	/* Stop the timer before we leave */
 	if (!nowayout)
-		esb_timer_stop ();
+		esb_timer_stop();
 
 	/* Deregister */
 	misc_deregister(&esb_miscdev);