[WATCHDOG 01/57] Clean acquirewdt and check for BKL dependancies

This brings the file into line with coding style.

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

1 files changed, 58 insertions, 61 deletions

diff --git a/drivers/watchdog/acquirewdt.c b/drivers/watchdog/acquirewdt.c
index 85269c365a10..269ada2f1fc3 100644
--- a/drivers/watchdog/acquirewdt.c
+++ b/drivers/watchdog/acquirewdt.c
@@ -58,39 +58,46 @@
 #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/miscdevice.h>           /* For MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR) */
+#include <linux/miscdevice.h>           /* For MODULE_ALIAS_MISCDEV
+                                                        (WATCHDOG_MINOR) */
 #include <linux/watchdog.h>             /* For the watchdog specific items */
 #include <linux/fs.h>                   /* For file operations */
 #include <linux/ioport.h>               /* For io-port access */
 #include <linux/platform_device.h>      /* For platform_driver framework */
 #include <linux/init.h>                 /* For __init/__exit/... */
 
-#include <asm/uaccess.h>                /* For copy_to_user/put_user/... */
-#include <asm/io.h>                     /* For inb/outb/... */
+#include <linux/uaccess.h>              /* For copy_to_user/put_user/... */
+#include <linux/io.h>                   /* For inb/outb/... */
 
 /* Module information */
 #define DRV_NAME "acquirewdt"
 #define PFX DRV_NAME ": "
 #define WATCHDOG_NAME "Acquire WDT"
-#define WATCHDOG_HEARTBEAT 0    /* There is no way to see what the correct time-out period is */
+/* There is no way to see what the correct time-out period is */
+#define WATCHDOG_HEARTBEAT 0
 
 /* internal variables */
-static struct platform_device *acq_platform_device;     /* the watchdog platform device */
+/* the watchdog platform device */
+static struct platform_device *acq_platform_device;
 static unsigned long acq_is_open;
 static char expect_close;
 
 /* module parameters */
-static int wdt_stop = 0x43;     /* You must set this - there is no sane way to probe for this board. */
+/* You must set this - there is no sane way to probe for this board. */
+static int wdt_stop = 0x43;
 module_param(wdt_stop, int, 0);
 MODULE_PARM_DESC(wdt_stop, "Acquire WDT 'stop' io port (default 0x43)");
 
-static int wdt_start = 0x443;   /* You must set this - there is no sane way to probe for this board. */
+/* You must set this - there is no sane way to probe for this board. */
+static int wdt_start = 0x443;
 module_param(wdt_start, int, 0);
 MODULE_PARM_DESC(wdt_start, "Acquire WDT 'start' io port (default 0x443)");
 
 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) ")");
 
 /*
  *      Watchdog Operations
@@ -112,18 +119,18 @@ static void acq_stop(void)
  *      /dev/watchdog handling
  */
 
-static ssize_t acq_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
+static ssize_t acq_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 (count) {
                 if (!nowayout) {
                         size_t i;
-
                         /* note: just in case someone wrote the magic character
                          * five months ago... */
                         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 != count; i++) {
                                 char c;
                                 if (get_user(c, buf + i))
@@ -132,64 +139,55 @@ static ssize_t acq_write(struct file *file, const char __user *buf, size_t count
                                         expect_close = 42;
                         }
                 }
-
-                /* Well, anyhow someone wrote to us, we should return that favour */
+                /* Well, anyhow someone wrote to us, we should
+                                return that favour */
                 acq_keepalive();
         }
         return count;
 }
 
-static int acq_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
-        unsigned long arg)
+static long acq_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
         int options, retval = -EINVAL;
         void __user *argp = (void __user *)arg;
         int __user *p = argp;
-        static struct watchdog_info ident =
-        {
+        static struct watchdog_info ident = {
                 .options = WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
                 .firmware_version = 1,
                 .identity = WATCHDOG_NAME,
         };
 
-        switch(cmd)
-        {
+        switch (cmd) {
         case WDIOC_GETSUPPORT:
-          return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
+                return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
 
         case WDIOC_GETSTATUS:
         case WDIOC_GETBOOTSTATUS:
-          return put_user(0, p);
+                return put_user(0, p);
 
         case WDIOC_KEEPALIVE:
-          acq_keepalive();
-          return 0;
+                acq_keepalive();
+                return 0;
 
         case WDIOC_GETTIMEOUT:
           return put_user(WATCHDOG_HEARTBEAT, p);
 
         case WDIOC_SETOPTIONS:
         {
-            if (get_user(options, p))
-              return -EFAULT;
-
-            if (options & WDIOS_DISABLECARD)
-            {
-              acq_stop();
-              retval = 0;
-            }
-
-            if (options & WDIOS_ENABLECARD)
-            {
-              acq_keepalive();
-              retval = 0;
-            }
-
-            return retval;
+                if (get_user(options, p))
+                        return -EFAULT;
+                if (options & WDIOS_DISABLECARD) {
+                        acq_stop();
+                        retval = 0;
+                }
+                if (options & WDIOS_ENABLECARD) {
+                        acq_keepalive();
+                        retval = 0;
+                }
+                return retval;
         }
-
         default:
-          return -ENOTTY;
+                return -ENOTTY;
         }
 }
 
@@ -211,7 +209,8 @@ static int acq_close(struct inode *inode, struct file *file)
         if (expect_close == 42) {
                 acq_stop();
         } else {
-                printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
+                printk(KERN_CRIT PFX
+                        "Unexpected close, not stopping watchdog!\n");
                 acq_keepalive();
         }
         clear_bit(0, &acq_is_open);
@@ -227,7 +226,7 @@ static const struct file_operations acq_fops = {
         .owner          = THIS_MODULE,
         .llseek         = no_llseek,
         .write          = acq_write,
-        .ioctl          = acq_ioctl,
+        .unlocked_ioctl = acq_ioctl,
         .open           = acq_open,
         .release        = acq_close,
 };
@@ -248,32 +247,29 @@ static int __devinit acq_probe(struct platform_device *dev)
 
         if (wdt_stop != wdt_start) {
                 if (!request_region(wdt_stop, 1, WATCHDOG_NAME)) {
-                        printk (KERN_ERR PFX "I/O address 0x%04x already in use\n",
-                                wdt_stop);
+                        printk(KERN_ERR PFX
+                            "I/O address 0x%04x already in use\n", wdt_stop);
                         ret = -EIO;
                         goto out;
                 }
         }
 
         if (!request_region(wdt_start, 1, WATCHDOG_NAME)) {
-                printk (KERN_ERR PFX "I/O address 0x%04x already in use\n",
+                printk(KERN_ERR PFX "I/O address 0x%04x already in use\n",
                         wdt_start);
                 ret = -EIO;
                 goto unreg_stop;
         }
-
         ret = misc_register(&acq_miscdev);
         if (ret != 0) {
-                printk (KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
-                        WATCHDOG_MINOR, ret);
+                printk(KERN_ERR PFX
+                        "cannot register miscdev on minor=%d (err=%d)\n",
+                                                        WATCHDOG_MINOR, ret);
                 goto unreg_regions;
         }
-
-        printk (KERN_INFO PFX "initialized. (nowayout=%d)\n",
-                nowayout);
+        printk(KERN_INFO PFX "initialized. (nowayout=%d)\n", nowayout);
 
         return 0;
-
 unreg_regions:
         release_region(wdt_start, 1);
 unreg_stop:
@@ -286,9 +282,9 @@ out:
 static int __devexit acq_remove(struct platform_device *dev)
 {
         misc_deregister(&acq_miscdev);
-        release_region(wdt_start,1);
-        if(wdt_stop != wdt_start)
-                release_region(wdt_stop,1);
+        release_region(wdt_start, 1);
+        if (wdt_stop != wdt_start)
+                release_region(wdt_stop, 1);
 
         return 0;
 }
@@ -313,18 +309,19 @@ static int __init acq_init(void)
 {
         int err;
 
-        printk(KERN_INFO "WDT driver for Acquire single board computer initialising.\n");
+        printk(KERN_INFO
+              "WDT driver for Acquire single board computer initialising.\n");
 
         err = platform_driver_register(&acquirewdt_driver);
         if (err)
                 return err;
 
-        acq_platform_device = platform_device_register_simple(DRV_NAME, -1, NULL, 0);
+        acq_platform_device = platform_device_register_simple(DRV_NAME,
+                                                                -1, NULL, 0);
         if (IS_ERR(acq_platform_device)) {
                 err = PTR_ERR(acq_platform_device);
                 goto unreg_platform_driver;
         }
-
         return 0;
 
 unreg_platform_driver: