[WATCHDOG 52/57] w83977f_wdt: clean up, coding style 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>

1 files changed, 111 insertions, 114 deletions

diff --git a/drivers/watchdog/w83977f_wdt.c b/drivers/watchdog/w83977f_wdt.c
index b209bcd7f789..6860a13f5bb9 100644
--- a/drivers/watchdog/w83977f_wdt.c
+++ b/drivers/watchdog/w83977f_wdt.c
@@ -26,10 +26,10 @@
 #include <linux/watchdog.h>
 #include <linux/notifier.h>
 #include <linux/reboot.h>
+#include <linux/uaccess.h>
+#include <linux/io.h>
 
-#include <asm/io.h>
 #include <asm/system.h>
-#include <asm/uaccess.h>
 
 #define WATCHDOG_VERSION  "1.00"
 #define WATCHDOG_NAME     "W83977F WDT"
@@ -53,13 +53,17 @@ static	char expect_close;
 static  DEFINE_SPINLOCK(spinlock);
 
 module_param(timeout, int, 0);
-MODULE_PARM_DESC(timeout,"Watchdog timeout in seconds (15..7635), default=" __MODULE_STRING(DEFAULT_TIMEOUT) ")");
+MODULE_PARM_DESC(timeout,
+                "Watchdog timeout in seconds (15..7635), default="
+                                __MODULE_STRING(DEFAULT_TIMEOUT) ")");
 module_param(testmode, int, 0);
-MODULE_PARM_DESC(testmode,"Watchdog testmode (1 = no reboot), default=0");
+MODULE_PARM_DESC(testmode, "Watchdog testmode (1 = no reboot), default=0");
 
 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) ")");
 
 /*
  * Start the watchdog
@@ -72,8 +76,8 @@ static int wdt_start(void)
         spin_lock_irqsave(&spinlock, flags);
 
         /* Unlock the SuperIO chip */
-        outb_p(UNLOCK_DATA,IO_INDEX_PORT);
-        outb_p(UNLOCK_DATA,IO_INDEX_PORT);
+        outb_p(UNLOCK_DATA, IO_INDEX_PORT);
+        outb_p(UNLOCK_DATA, IO_INDEX_PORT);
 
         /*
          * Select device Aux2 (device=8) to set watchdog regs F2, F3 and F4.
@@ -81,50 +85,49 @@ static int wdt_start(void)
          * F3 is set to enable watchdog LED blink at timeout.
          * F4 is used to just clear the TIMEOUT'ed state (bit 0).
          */
-        outb_p(DEVICE_REGISTER,IO_INDEX_PORT);
-        outb_p(0x08,IO_DATA_PORT);
-        outb_p(0xF2,IO_INDEX_PORT);
-        outb_p(timeoutW,IO_DATA_PORT);
-        outb_p(0xF3,IO_INDEX_PORT);
-        outb_p(0x08,IO_DATA_PORT);
-        outb_p(0xF4,IO_INDEX_PORT);
-        outb_p(0x00,IO_DATA_PORT);
+        outb_p(DEVICE_REGISTER, IO_INDEX_PORT);
+        outb_p(0x08, IO_DATA_PORT);
+        outb_p(0xF2, IO_INDEX_PORT);
+        outb_p(timeoutW, IO_DATA_PORT);
+        outb_p(0xF3, IO_INDEX_PORT);
+        outb_p(0x08, IO_DATA_PORT);
+        outb_p(0xF4, IO_INDEX_PORT);
+        outb_p(0x00, IO_DATA_PORT);
 
         /* Set device Aux2 active */
-        outb_p(0x30,IO_INDEX_PORT);
-        outb_p(0x01,IO_DATA_PORT);
+        outb_p(0x30, IO_INDEX_PORT);
+        outb_p(0x01, IO_DATA_PORT);
 
-        /* 
+        /*
          * Select device Aux1 (dev=7) to set GP16 as the watchdog output
          * (in reg E6) and GP13 as the watchdog LED output (in reg E3).
          * Map GP16 at pin 119.
          * In test mode watch the bit 0 on F4 to indicate "triggered" or
          * check watchdog LED on SBC.
          */
-        outb_p(DEVICE_REGISTER,IO_INDEX_PORT);
-        outb_p(0x07,IO_DATA_PORT);
-        if (!testmode)
-        {
+        outb_p(DEVICE_REGISTER, IO_INDEX_PORT);
+        outb_p(0x07, IO_DATA_PORT);
+        if (!testmode) {
                 unsigned pin_map;
 
-                outb_p(0xE6,IO_INDEX_PORT);
-                outb_p(0x0A,IO_DATA_PORT);
-                outb_p(0x2C,IO_INDEX_PORT);
+                outb_p(0xE6, IO_INDEX_PORT);
+                outb_p(0x0A, IO_DATA_PORT);
+                outb_p(0x2C, IO_INDEX_PORT);
                 pin_map = inb_p(IO_DATA_PORT);
                 pin_map |= 0x10;
                 pin_map &= ~(0x20);
-                outb_p(0x2C,IO_INDEX_PORT);
-                outb_p(pin_map,IO_DATA_PORT);
+                outb_p(0x2C, IO_INDEX_PORT);
+                outb_p(pin_map, IO_DATA_PORT);
         }
-        outb_p(0xE3,IO_INDEX_PORT);
-        outb_p(0x08,IO_DATA_PORT);
+        outb_p(0xE3, IO_INDEX_PORT);
+        outb_p(0x08, IO_DATA_PORT);
 
         /* Set device Aux1 active */
-        outb_p(0x30,IO_INDEX_PORT);
-        outb_p(0x01,IO_DATA_PORT);
+        outb_p(0x30, IO_INDEX_PORT);
+        outb_p(0x01, IO_DATA_PORT);
 
         /* Lock the SuperIO chip */
-        outb_p(LOCK_DATA,IO_INDEX_PORT);
+        outb_p(LOCK_DATA, IO_INDEX_PORT);
 
         spin_unlock_irqrestore(&spinlock, flags);
 
@@ -144,42 +147,41 @@ static int wdt_stop(void)
         spin_lock_irqsave(&spinlock, flags);
 
         /* Unlock the SuperIO chip */
-        outb_p(UNLOCK_DATA,IO_INDEX_PORT);
-        outb_p(UNLOCK_DATA,IO_INDEX_PORT);
+        outb_p(UNLOCK_DATA, IO_INDEX_PORT);
+        outb_p(UNLOCK_DATA, IO_INDEX_PORT);
 
-        /* 
+        /*
          * Select device Aux2 (device=8) to set watchdog regs F2, F3 and F4.
          * F2 is reset to its default value (watchdog timer disabled).
          * F3 is reset to its default state.
          * F4 clears the TIMEOUT'ed state (bit 0) - back to default.
          */
-        outb_p(DEVICE_REGISTER,IO_INDEX_PORT);
-        outb_p(0x08,IO_DATA_PORT);
-        outb_p(0xF2,IO_INDEX_PORT);
-        outb_p(0xFF,IO_DATA_PORT);
-        outb_p(0xF3,IO_INDEX_PORT);
-        outb_p(0x00,IO_DATA_PORT);
-        outb_p(0xF4,IO_INDEX_PORT);
-        outb_p(0x00,IO_DATA_PORT);
-        outb_p(0xF2,IO_INDEX_PORT);
-        outb_p(0x00,IO_DATA_PORT);
+        outb_p(DEVICE_REGISTER, IO_INDEX_PORT);
+        outb_p(0x08, IO_DATA_PORT);
+        outb_p(0xF2, IO_INDEX_PORT);
+        outb_p(0xFF, IO_DATA_PORT);
+        outb_p(0xF3, IO_INDEX_PORT);
+        outb_p(0x00, IO_DATA_PORT);
+        outb_p(0xF4, IO_INDEX_PORT);
+        outb_p(0x00, IO_DATA_PORT);
+        outb_p(0xF2, IO_INDEX_PORT);
+        outb_p(0x00, IO_DATA_PORT);
 
         /*
-         * Select device Aux1 (dev=7) to set GP16 (in reg E6) and 
+         * Select device Aux1 (dev=7) to set GP16 (in reg E6) and
          * Gp13 (in reg E3) as inputs.
          */
-        outb_p(DEVICE_REGISTER,IO_INDEX_PORT);
-        outb_p(0x07,IO_DATA_PORT);
-        if (!testmode)
-        {
-                outb_p(0xE6,IO_INDEX_PORT);
-                outb_p(0x01,IO_DATA_PORT);
+        outb_p(DEVICE_REGISTER, IO_INDEX_PORT);
+        outb_p(0x07, IO_DATA_PORT);
+        if (!testmode) {
+                outb_p(0xE6, IO_INDEX_PORT);
+                outb_p(0x01, IO_DATA_PORT);
         }
-        outb_p(0xE3,IO_INDEX_PORT);
-        outb_p(0x01,IO_DATA_PORT);
+        outb_p(0xE3, IO_INDEX_PORT);
+        outb_p(0x01, IO_DATA_PORT);
 
         /* Lock the SuperIO chip */
-        outb_p(LOCK_DATA,IO_INDEX_PORT);
+        outb_p(LOCK_DATA, IO_INDEX_PORT);
 
         spin_unlock_irqrestore(&spinlock, flags);
 
@@ -200,17 +202,17 @@ static int wdt_keepalive(void)
         spin_lock_irqsave(&spinlock, flags);
 
         /* Unlock the SuperIO chip */
-        outb_p(UNLOCK_DATA,IO_INDEX_PORT);
-        outb_p(UNLOCK_DATA,IO_INDEX_PORT);
+        outb_p(UNLOCK_DATA, IO_INDEX_PORT);
+        outb_p(UNLOCK_DATA, IO_INDEX_PORT);
 
         /* Select device Aux2 (device=8) to kick watchdog reg F2 */
-        outb_p(DEVICE_REGISTER,IO_INDEX_PORT);
-        outb_p(0x08,IO_DATA_PORT);
-        outb_p(0xF2,IO_INDEX_PORT);
-        outb_p(timeoutW,IO_DATA_PORT);
+        outb_p(DEVICE_REGISTER, IO_INDEX_PORT);
+        outb_p(0x08, IO_DATA_PORT);
+        outb_p(0xF2, IO_INDEX_PORT);
+        outb_p(timeoutW, IO_DATA_PORT);
 
         /* Lock the SuperIO chip */
-        outb_p(LOCK_DATA,IO_INDEX_PORT);
+        outb_p(LOCK_DATA, IO_INDEX_PORT);
 
         spin_unlock_irqrestore(&spinlock, flags);
 
@@ -227,7 +229,7 @@ static int wdt_set_timeout(int t)
 
         /*
          * Convert seconds to watchdog counter time units, rounding up.
-         * On PCM-5335 watchdog units are 30 seconds/step with 15 sec startup 
+         * On PCM-5335 watchdog units are 30 seconds/step with 15 sec startup
          * value. This information is supplied in the PCM-5335 manual and was
          * checked by me on a real board. This is a bit strange because W83977f
          * datasheet says counter unit is in minutes!
@@ -241,7 +243,7 @@ static int wdt_set_timeout(int t)
                 return -EINVAL;
 
         /*
-         * timeout is the timeout in seconds, 
+         * timeout is the timeout in seconds,
          * timeoutW is the timeout in watchdog counter units.
          */
         timeoutW = tmrval;
@@ -261,17 +263,17 @@ static int wdt_get_status(int *status)
         spin_lock_irqsave(&spinlock, flags);
 
         /* Unlock the SuperIO chip */
-        outb_p(UNLOCK_DATA,IO_INDEX_PORT);
-        outb_p(UNLOCK_DATA,IO_INDEX_PORT);
+        outb_p(UNLOCK_DATA, IO_INDEX_PORT);
+        outb_p(UNLOCK_DATA, IO_INDEX_PORT);
 
         /* Select device Aux2 (device=8) to read watchdog reg F4 */
-        outb_p(DEVICE_REGISTER,IO_INDEX_PORT);
-        outb_p(0x08,IO_DATA_PORT);
-        outb_p(0xF4,IO_INDEX_PORT);
+        outb_p(DEVICE_REGISTER, IO_INDEX_PORT);
+        outb_p(0x08, IO_DATA_PORT);
+        outb_p(0xF4, IO_INDEX_PORT);
         new_status = inb_p(IO_DATA_PORT);
 
         /* Lock the SuperIO chip */
-        outb_p(LOCK_DATA,IO_INDEX_PORT);
+        outb_p(LOCK_DATA, IO_INDEX_PORT);
 
         spin_unlock_irqrestore(&spinlock, flags);
 
@@ -290,7 +292,7 @@ static int wdt_get_status(int *status)
 static int wdt_open(struct inode *inode, struct file *file)
 {
         /* If the watchdog is alive we don't need to start it again */
-        if( test_and_set_bit(0, &timer_alive) )
+        if (test_and_set_bit(0, &timer_alive))
                 return -EBUSY;
 
         if (nowayout)
@@ -306,13 +308,13 @@ static int wdt_release(struct inode *inode, struct file *file)
          * Shut off the timer.
          * Lock it in if it's a module and we set nowayout
          */
-        if (expect_close == 42)
-        {
+        if (expect_close == 42) {
                 wdt_stop();
                 clear_bit(0, &timer_alive);
         } else {
                 wdt_keepalive();
-                printk(KERN_CRIT PFX "unexpected close, not stopping watchdog!\n");
+                printk(KERN_CRIT PFX
+                        "unexpected close, not stopping watchdog!\n");
         }
         expect_close = 0;
         return 0;
@@ -333,24 +335,22 @@ static ssize_t wdt_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)
-        {
-                if (!nowayout)
-                {
+        if (count) {
+                if (!nowayout) {
                         size_t ofs;
 
-                        /* note: just in case someone wrote the magic character long ago */
+                        /* note: just in case someone wrote the
+                           magic character long ago */
                         expect_close = 0;
 
-                        /* scan to see whether or not we got the magic character */
-                        for(ofs = 0; ofs != count; ofs++)
-                        {
+                        /* scan to see whether or not we got the
+                           magic character */
+                        for (ofs = 0; ofs != count; ofs++) {
                                 char c;
                                 if (get_user(c, buf + ofs))
                                         return -EFAULT;
-                                if (c == 'V') {
+                                if (c == 'V')
                                         expect_close = 42;
-                                }
                         }
                 }
 
@@ -377,8 +377,7 @@ static struct watchdog_info ident = {
         .identity = WATCHDOG_NAME,
 };
 
-static int wdt_ioctl(struct inode *inode, struct file *file,
-        unsigned int cmd, unsigned long arg)
+static long wdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
         int status;
         int new_options, retval = -EINVAL;
@@ -390,13 +389,13 @@ static int wdt_ioctl(struct inode *inode, struct file *file,
 
         uarg.i = (int __user *)arg;
 
-        switch(cmd)
-        {
+        switch (cmd) {
         default:
                 return -ENOTTY;
 
         case WDIOC_GETSUPPORT:
-                return copy_to_user(uarg.ident, &ident, sizeof(ident)) ? -EFAULT : 0;
+                return copy_to_user(uarg.ident, &ident,
+                                                sizeof(ident)) ? -EFAULT : 0;
 
         case WDIOC_GETSTATUS:
                 wdt_get_status(&status);
@@ -410,7 +409,7 @@ static int wdt_ioctl(struct inode *inode, struct file *file,
                 return 0;
 
         case WDIOC_SETOPTIONS:
-                if (get_user (new_options, uarg.i))
+                if (get_user(new_options, uarg.i))
                         return -EFAULT;
 
                 if (new_options & WDIOS_DISABLECARD) {
@@ -444,23 +443,21 @@ static int wdt_ioctl(struct inode *inode, struct file *file,
 static int wdt_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)
                 wdt_stop();
         return NOTIFY_DONE;
 }
 
-static const struct file_operations wdt_fops=
-{
+static const struct file_operations wdt_fops = {
         .owner          = THIS_MODULE,
         .llseek         = no_llseek,
         .write          = wdt_write,
-        .ioctl          = wdt_ioctl,
+        .unlocked_ioctl = wdt_ioctl,
         .open           = wdt_open,
         .release        = wdt_release,
 };
 
-static struct miscdevice wdt_miscdev=
-{
+static struct miscdevice wdt_miscdev = {
         .minor          = WATCHDOG_MINOR,
         .name           = "watchdog",
         .fops           = &wdt_fops,
@@ -474,20 +471,20 @@ static int __init w83977f_wdt_init(void)
 {
         int rc;
 
-        printk(KERN_INFO PFX DRIVER_VERSION);
+        printk(KERN_INFO PFX DRIVER_VERSION);
 
         /*
-         * Check that the timeout value is within it's range ; 
+         * Check that the timeout value is within it's range;
          * if not reset to the default
          */
         if (wdt_set_timeout(timeout)) {
                 wdt_set_timeout(DEFAULT_TIMEOUT);
-                printk(KERN_INFO PFX "timeout value must be 15<=timeout<=7635, using %d\n",
-                        DEFAULT_TIMEOUT);
+                printk(KERN_INFO PFX
+                    "timeout value must be 15 <= timeout <= 7635, using %d\n",
+                                                        DEFAULT_TIMEOUT);
         }
 
-        if (!request_region(IO_INDEX_PORT, 2, WATCHDOG_NAME))
-        {
+        if (!request_region(IO_INDEX_PORT, 2, WATCHDOG_NAME)) {
                 printk(KERN_ERR PFX "I/O address 0x%04x already in use\n",
                         IO_INDEX_PORT);
                 rc = -EIO;
@@ -495,30 +492,30 @@ static int __init w83977f_wdt_init(void)
         }
 
         rc = register_reboot_notifier(&wdt_notifier);
-        if (rc)
-        {
-                printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
-                        rc);
+        if (rc) {
+                printk(KERN_ERR PFX
+                        "cannot register reboot notifier (err=%d)\n", rc);
                 goto err_out_region;
         }
 
         rc = misc_register(&wdt_miscdev);
-        if (rc)
-        {
-                printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
-                        wdt_miscdev.minor, rc);
+        if (rc) {
+                printk(KERN_ERR PFX
+                        "cannot register miscdev on minor=%d (err=%d)\n",
+                                                wdt_miscdev.minor, rc);
                 goto err_out_reboot;
         }
 
-        printk(KERN_INFO PFX "initialized. timeout=%d sec (nowayout=%d testmode=%d)\n",
-                timeout, nowayout, testmode);
+        printk(KERN_INFO PFX
+                "initialized. timeout=%d sec (nowayout=%d testmode=%d)\n",
+                                        timeout, nowayout, testmode);
 
         return 0;
 
 err_out_reboot:
         unregister_reboot_notifier(&wdt_notifier);
 err_out_region:
-        release_region(IO_INDEX_PORT,2);
+        release_region(IO_INDEX_PORT, 2);
 err_out:
         return rc;
 }
@@ -528,7 +525,7 @@ static void __exit w83977f_wdt_exit(void)
         wdt_stop();
         misc_deregister(&wdt_miscdev);
         unregister_reboot_notifier(&wdt_notifier);
-        release_region(IO_INDEX_PORT,2);
+        release_region(IO_INDEX_PORT, 2);
 }
 
 module_init(w83977f_wdt_init);