[WATCHDOG 31/57] pc87413_wdt: clean up, coding style, 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, 87 insertions, 124 deletions

diff --git a/drivers/watchdog/pc87413_wdt.c b/drivers/watchdog/pc87413_wdt.c
index 15e4f8887a9e..326f2d2ded3b 100644
--- a/drivers/watchdog/pc87413_wdt.c
+++ b/drivers/watchdog/pc87413_wdt.c
@@ -31,9 +31,9 @@
 #include <linux/spinlock.h>
 #include <linux/moduleparam.h>
 #include <linux/version.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
 
-#include <asm/io.h>
-#include <asm/uaccess.h>
 #include <asm/system.h>
 
 /* #define DEBUG 1 */
@@ -56,12 +56,12 @@
 
 static int io = 0x2E;                    /* Address used on Portwell Boards */
 
-static int timeout = DEFAULT_TIMEOUT;    /* timeout value */
-static unsigned long timer_enabled = 0;  /* is the timer enabled? */
+static int timeout = DEFAULT_TIMEOUT;   /* timeout value */
+static unsigned long timer_enabled;     /* is the timer enabled? */
 
-static char expect_close;                /* is the close expected? */
+static char expect_close;               /* is the close expected? */
 
-static DEFINE_SPINLOCK(io_lock);/* to guard the watchdog from io races */
+static DEFINE_SPINLOCK(io_lock);        /* to guard us from io races */
 
 static int nowayout = WATCHDOG_NOWAYOUT;
 
@@ -69,7 +69,7 @@ static int nowayout = WATCHDOG_NOWAYOUT;
 
 /* Select pins for Watchdog output */
 
-static inline void pc87413_select_wdt_out (void)
+static inline void pc87413_select_wdt_out(void)
 {
         unsigned int cr_data = 0;
 
@@ -77,7 +77,7 @@ static inline void pc87413_select_wdt_out (void)
 
         outb_p(SIOCFG2, WDT_INDEX_IO_PORT);
 
-        cr_data = inb (WDT_DATA_IO_PORT);
+        cr_data = inb(WDT_DATA_IO_PORT);
 
         cr_data |= 0x80; /* Set Bit7 to 1*/
         outb_p(SIOCFG2, WDT_INDEX_IO_PORT);
@@ -85,8 +85,9 @@ static inline void pc87413_select_wdt_out (void)
         outb_p(cr_data, WDT_DATA_IO_PORT);
 
 #ifdef DEBUG
-        printk(KERN_INFO DPFX "Select multiple pin,pin55,as WDT output:"
-                              " Bit7 to 1: %d\n", cr_data);
+        printk(KERN_INFO DPFX
+                "Select multiple pin,pin55,as WDT output: Bit7 to 1: %d\n",
+                                                                cr_data);
 #endif
 }
 
@@ -94,7 +95,7 @@ static inline void pc87413_select_wdt_out (void)
 
 static inline void pc87413_enable_swc(void)
 {
-        unsigned int cr_data=0;
+        unsigned int cr_data = 0;
 
         /* Step 2: Enable SWC functions */
 
@@ -129,12 +130,11 @@ static inline unsigned int pc87413_get_swc_base(void)
         addr_l = inb(WDT_DATA_IO_PORT);
 
         swc_base_addr = (addr_h << 8) + addr_l;
-
 #ifdef DEBUG
-        printk(KERN_INFO DPFX "Read SWC I/O Base Address: low %d, high %d,"
-                              " res %d\n", addr_l, addr_h, swc_base_addr);
+        printk(KERN_INFO DPFX
+                "Read SWC I/O Base Address: low %d, high %d, res %d\n",
+                                                addr_l, addr_h, swc_base_addr);
 #endif
-
         return swc_base_addr;
 }
 
@@ -143,9 +143,7 @@ static inline unsigned int pc87413_get_swc_base(void)
 static inline void pc87413_swc_bank3(unsigned int swc_base_addr)
 {
         /* Step 4: Select Bank3 of SWC */
-
         outb_p(inb(swc_base_addr + 0x0f) | 0x03, swc_base_addr + 0x0f);
-
 #ifdef DEBUG
         printk(KERN_INFO DPFX "Select Bank3 of SWC\n");
 #endif
@@ -157,9 +155,7 @@ static inline void pc87413_programm_wdto(unsigned int swc_base_addr,
                                          char pc87413_time)
 {
         /* Step 5: Programm WDTO, Twd. */
-
         outb_p(pc87413_time, swc_base_addr + WDTO);
-
 #ifdef DEBUG
         printk(KERN_INFO DPFX "Set WDTO to %d minutes\n", pc87413_time);
 #endif
@@ -170,9 +166,7 @@ static inline void pc87413_programm_wdto(unsigned int swc_base_addr,
 static inline void pc87413_enable_wden(unsigned int swc_base_addr)
 {
         /* Step 6: Enable WDEN */
-
-        outb_p(inb (swc_base_addr + WDCTL) | 0x01, swc_base_addr + WDCTL);
-
+        outb_p(inb(swc_base_addr + WDCTL) | 0x01, swc_base_addr + WDCTL);
 #ifdef DEBUG
         printk(KERN_INFO DPFX "Enable WDEN\n");
 #endif
@@ -182,9 +176,7 @@ static inline void pc87413_enable_wden(unsigned int swc_base_addr)
 static inline void pc87413_enable_sw_wd_tren(unsigned int swc_base_addr)
 {
         /* Enable SW_WD_TREN */
-
-        outb_p(inb (swc_base_addr + WDCFG) | 0x80, swc_base_addr + WDCFG);
-
+        outb_p(inb(swc_base_addr + WDCFG) | 0x80, swc_base_addr + WDCFG);
 #ifdef DEBUG
         printk(KERN_INFO DPFX "Enable SW_WD_TREN\n");
 #endif
@@ -195,9 +187,7 @@ static inline void pc87413_enable_sw_wd_tren(unsigned int swc_base_addr)
 static inline void pc87413_disable_sw_wd_tren(unsigned int swc_base_addr)
 {
         /* Disable SW_WD_TREN */
-
-        outb_p(inb (swc_base_addr + WDCFG) & 0x7f, swc_base_addr + WDCFG);
-
+        outb_p(inb(swc_base_addr + WDCFG) & 0x7f, swc_base_addr + WDCFG);
 #ifdef DEBUG
         printk(KERN_INFO DPFX "pc87413 - Disable SW_WD_TREN\n");
 #endif
@@ -208,9 +198,7 @@ static inline void pc87413_disable_sw_wd_tren(unsigned int swc_base_addr)
 static inline void pc87413_enable_sw_wd_trg(unsigned int swc_base_addr)
 {
         /* Enable SW_WD_TRG */
-
-        outb_p(inb (swc_base_addr + WDCTL) | 0x80, swc_base_addr + WDCTL);
-
+        outb_p(inb(swc_base_addr + WDCTL) | 0x80, swc_base_addr + WDCTL);
 #ifdef DEBUG
         printk(KERN_INFO DPFX "pc87413 - Enable SW_WD_TRG\n");
 #endif
@@ -221,9 +209,7 @@ static inline void pc87413_enable_sw_wd_trg(unsigned int swc_base_addr)
 static inline void pc87413_disable_sw_wd_trg(unsigned int swc_base_addr)
 {
         /* Disable SW_WD_TRG */
-
-        outb_p(inb (swc_base_addr + WDCTL) & 0x7f, swc_base_addr + WDCTL);
-
+        outb_p(inb(swc_base_addr + WDCTL) & 0x7f, swc_base_addr + WDCTL);
 #ifdef DEBUG
         printk(KERN_INFO DPFX "Disable SW_WD_TRG\n");
 #endif
@@ -314,8 +300,8 @@ static int pc87413_open(struct inode *inode, struct file *file)
         /* Reload and activate timer */
         pc87413_refresh();
 
-        printk(KERN_INFO MODNAME "Watchdog enabled. Timeout set to"
-                                 " %d minute(s).\n", timeout);
+        printk(KERN_INFO MODNAME
+                "Watchdog enabled. Timeout set to %d minute(s).\n", timeout);
 
         return nonseekable_open(inode, file);
 }
@@ -338,17 +324,15 @@ static int pc87413_release(struct inode *inode, struct file *file)
 
         if (expect_close == 42) {
                 pc87413_disable();
-                printk(KERN_INFO MODNAME "Watchdog disabled,"
-                                         " sleeping again...\n");
+                printk(KERN_INFO MODNAME
+                                "Watchdog disabled, sleeping again...\n");
         } else {
-                printk(KERN_CRIT MODNAME "Unexpected close, not stopping"
-                                         " watchdog!\n");
+                printk(KERN_CRIT MODNAME
+                                "Unexpected close, not stopping watchdog!\n");
                 pc87413_refresh();
         }
-
         clear_bit(0, &timer_enabled);
         expect_close = 0;
-
         return 0;
 }
 
@@ -386,7 +370,8 @@ static ssize_t pc87413_write(struct file *file, const char __user *data,
                         /* reset expect flag */
                         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))
@@ -404,7 +389,6 @@ static ssize_t pc87413_write(struct file *file, const char __user *data,
 
 /**
  *      pc87413_ioctl:
- *      @inode: inode of the device
  *      @file: file handle to the device
  *      @cmd: watchdog command
  *      @arg: argument pointer
@@ -414,8 +398,8 @@ static ssize_t pc87413_write(struct file *file, const char __user *data,
  *      querying capabilities and current status.
  */
 
-static int pc87413_ioctl(struct inode *inode, struct file *file,
-                         unsigned int cmd, unsigned long arg)
+static long pc87413_ioctl(struct file *file, unsigned int cmd,
+                                                unsigned long arg)
 {
         int new_timeout;
 
@@ -426,75 +410,58 @@ static int pc87413_ioctl(struct inode *inode, struct file *file,
 
         static struct watchdog_info ident = {
                 .options          = WDIOF_KEEPALIVEPING |
-                                    WDIOF_SETTIMEOUT |
-                                    WDIOF_MAGICCLOSE,
+                                    WDIOF_SETTIMEOUT |
+                                    WDIOF_MAGICCLOSE,
                 .firmware_version = 1,
                 .identity         = "PC87413(HF/F) watchdog"
         };
 
         uarg.i = (int __user *)arg;
 
-        switch(cmd) {
-                default:
-                        return -ENOTTY;
-
-                case WDIOC_GETSUPPORT:
-                        return copy_to_user(uarg.ident, &ident,
-                                sizeof(ident)) ? -EFAULT : 0;
-
-                case WDIOC_GETSTATUS:
-                        return put_user(pc87413_status(), uarg.i);
-
-                case WDIOC_GETBOOTSTATUS:
-                        return put_user(0, uarg.i);
-
-                case WDIOC_KEEPALIVE:
-                        pc87413_refresh();
+        switch (cmd) {
+        case WDIOC_GETSUPPORT:
+                return copy_to_user(uarg.ident, &ident,
+                                        sizeof(ident)) ? -EFAULT : 0;
+        case WDIOC_GETSTATUS:
+                return put_user(pc87413_status(), uarg.i);
+        case WDIOC_GETBOOTSTATUS:
+                return put_user(0, uarg.i);
+        case WDIOC_KEEPALIVE:
+                pc87413_refresh();
 #ifdef DEBUG
-                        printk(KERN_INFO DPFX "keepalive\n");
+                printk(KERN_INFO DPFX "keepalive\n");
 #endif
-                        return 0;
-
-                case WDIOC_SETTIMEOUT:
-                        if (get_user(new_timeout, uarg.i))
-                                return -EFAULT;
-
-                        // the API states this is given in secs
-                        new_timeout /= 60;
-
-                        if (new_timeout < 0 || new_timeout > MAX_TIMEOUT)
-                                return -EINVAL;
-
-                        timeout = new_timeout;
-                        pc87413_refresh();
-
-                        // fall through and return the new timeout...
-
-                case WDIOC_GETTIMEOUT:
-
-                        new_timeout = timeout * 60;
-
-                        return put_user(new_timeout, uarg.i);
-
-                case WDIOC_SETOPTIONS:
-                {
-                        int options, retval = -EINVAL;
-
-                        if (get_user(options, uarg.i))
-                                return -EFAULT;
-
-                        if (options & WDIOS_DISABLECARD) {
-                                pc87413_disable();
-                                retval = 0;
-                        }
-
-                        if (options & WDIOS_ENABLECARD) {
-                                pc87413_enable();
-                                retval = 0;
-                        }
-
-                        return retval;
+                return 0;
+        case WDIOC_SETTIMEOUT:
+                if (get_user(new_timeout, uarg.i))
+                        return -EFAULT;
+                /* the API states this is given in secs */
+                new_timeout /= 60;
+                if (new_timeout < 0 || new_timeout > MAX_TIMEOUT)
+                        return -EINVAL;
+                timeout = new_timeout;
+                pc87413_refresh();
+                /* fall through and return the new timeout... */
+        case WDIOC_GETTIMEOUT:
+                new_timeout = timeout * 60;
+                return put_user(new_timeout, uarg.i);
+        case WDIOC_SETOPTIONS:
+        {
+                int options, retval = -EINVAL;
+                if (get_user(options, uarg.i))
+                        return -EFAULT;
+                if (options & WDIOS_DISABLECARD) {
+                        pc87413_disable();
+                        retval = 0;
                 }
+                if (options & WDIOS_ENABLECARD) {
+                        pc87413_enable();
+                        retval = 0;
+                }
+                return retval;
+        }
+        default:
+                return -ENOTTY;
         }
 }
 
@@ -517,10 +484,8 @@ static int pc87413_notify_sys(struct notifier_block *this,
                               void *unused)
 {
         if (code == SYS_DOWN || code == SYS_HALT)
-        {
                 /* Turn the card off */
                 pc87413_disable();
-        }
         return NOTIFY_DONE;
 }
 
@@ -530,18 +495,16 @@ static const struct file_operations pc87413_fops = {
         .owner          = THIS_MODULE,
         .llseek         = no_llseek,
         .write          = pc87413_write,
-        .ioctl          = pc87413_ioctl,
+        .unlocked_ioctl = pc87413_ioctl,
         .open           = pc87413_open,
         .release        = pc87413_release,
 };
 
-static struct notifier_block pc87413_notifier =
-{
+static struct notifier_block pc87413_notifier = {
         .notifier_call  = pc87413_notify_sys,
 };
 
-static struct miscdevice pc87413_miscdev=
-{
+static struct miscdevice pc87413_miscdev = {
         .minor          = WATCHDOG_MINOR,
         .name           = "watchdog",
         .fops           = &pc87413_fops
@@ -561,29 +524,26 @@ static int __init pc87413_init(void)
 {
         int ret;
 
-        printk(KERN_INFO PFX "Version " VERSION " at io 0x%X\n", WDT_INDEX_IO_PORT);
+        printk(KERN_INFO PFX "Version " VERSION " at io 0x%X\n",
+                                                        WDT_INDEX_IO_PORT);
 
         /* request_region(io, 2, "pc87413"); */
 
         ret = register_reboot_notifier(&pc87413_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);
         }
 
         ret = misc_register(&pc87413_miscdev);
-
         if (ret != 0) {
                 printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
                         WATCHDOG_MINOR, ret);
                 unregister_reboot_notifier(&pc87413_notifier);
                 return ret;
         }
-
         printk(KERN_INFO PFX "initialized. timeout=%d min \n", timeout);
-
         pc87413_enable();
-
         return 0;
 }
 
@@ -600,8 +560,7 @@ static int __init pc87413_init(void)
 static void __exit pc87413_exit(void)
 {
         /* Stop the timer before we leave */
-        if (!nowayout)
-        {
+        if (!nowayout) {
                 pc87413_disable();
                 printk(KERN_INFO MODNAME "Watchdog disabled.\n");
         }
@@ -626,8 +585,12 @@ module_param(io, int, 0);
 MODULE_PARM_DESC(io, MODNAME " I/O port (default: " __MODULE_STRING(io) ").");
 
 module_param(timeout, int, 0);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in minutes (default=" __MODULE_STRING(timeout) ").");
+MODULE_PARM_DESC(timeout,
+                "Watchdog timeout in minutes (default="
+                                __MODULE_STRING(timeout) ").");
 
 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) ")");