[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>
This commit is contained in:
Alan Cox
Wim Van Sebroeck
parent
c1cfd1a2ff
commit
84af401af8
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@ -26,10 +26,10 @@
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#include <linux/watchdog.h>
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#include <linux/notifier.h>
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#include <linux/reboot.h>
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#include <linux/uaccess.h>
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#include <linux/io.h>
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#include <asm/io.h>
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#include <asm/system.h>
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#include <asm/uaccess.h>
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#define WATCHDOG_VERSION "1.00"
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#define WATCHDOG_NAME "W83977F WDT"
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@ -53,13 +53,17 @@ static char expect_close;
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static DEFINE_SPINLOCK(spinlock);
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module_param(timeout, int, 0);
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MODULE_PARM_DESC(timeout,"Watchdog timeout in seconds (15..7635), default=" __MODULE_STRING(DEFAULT_TIMEOUT) ")");
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MODULE_PARM_DESC(timeout,
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"Watchdog timeout in seconds (15..7635), default="
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__MODULE_STRING(DEFAULT_TIMEOUT) ")");
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module_param(testmode, int, 0);
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MODULE_PARM_DESC(testmode, "Watchdog testmode (1 = no reboot), default=0");
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static int nowayout = WATCHDOG_NOWAYOUT;
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module_param(nowayout, int, 0);
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MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
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MODULE_PARM_DESC(nowayout,
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"Watchdog cannot be stopped once started (default="
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__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
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/*
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* Start the watchdog
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@ -103,8 +107,7 @@ static int wdt_start(void)
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*/
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outb_p(DEVICE_REGISTER, IO_INDEX_PORT);
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outb_p(0x07, IO_DATA_PORT);
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if (!testmode)
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{
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if (!testmode) {
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unsigned pin_map;
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outb_p(0xE6, IO_INDEX_PORT);
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@ -170,8 +173,7 @@ static int wdt_stop(void)
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*/
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outb_p(DEVICE_REGISTER, IO_INDEX_PORT);
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outb_p(0x07, IO_DATA_PORT);
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if (!testmode)
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{
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if (!testmode) {
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outb_p(0xE6, IO_INDEX_PORT);
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outb_p(0x01, IO_DATA_PORT);
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}
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@ -306,13 +308,13 @@ static int wdt_release(struct inode *inode, struct file *file)
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* Shut off the timer.
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* Lock it in if it's a module and we set nowayout
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*/
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if (expect_close == 42)
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{
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if (expect_close == 42) {
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wdt_stop();
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clear_bit(0, &timer_alive);
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} else {
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wdt_keepalive();
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printk(KERN_CRIT PFX "unexpected close, not stopping watchdog!\n");
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printk(KERN_CRIT PFX
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"unexpected close, not stopping watchdog!\n");
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}
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expect_close = 0;
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return 0;
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@ -333,26 +335,24 @@ static ssize_t wdt_write(struct file *file, const char __user *buf,
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size_t count, loff_t *ppos)
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{
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/* See if we got the magic character 'V' and reload the timer */
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if(count)
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{
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if (!nowayout)
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{
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if (count) {
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if (!nowayout) {
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size_t ofs;
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/* note: just in case someone wrote the magic character long ago */
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/* note: just in case someone wrote the
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magic character long ago */
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expect_close = 0;
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/* scan to see whether or not we got the magic character */
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for(ofs = 0; ofs != count; ofs++)
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{
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/* scan to see whether or not we got the
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magic character */
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for (ofs = 0; ofs != count; ofs++) {
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char c;
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if (get_user(c, buf + ofs))
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return -EFAULT;
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if (c == 'V') {
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if (c == 'V')
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expect_close = 42;
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}
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}
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}
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/* someone wrote to us, we should restart timer */
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wdt_keepalive();
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@ -377,8 +377,7 @@ static struct watchdog_info ident = {
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.identity = WATCHDOG_NAME,
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};
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static int wdt_ioctl(struct inode *inode, struct file *file,
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unsigned int cmd, unsigned long arg)
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static long wdt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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{
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int status;
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int new_options, retval = -EINVAL;
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@ -390,13 +389,13 @@ static int wdt_ioctl(struct inode *inode, struct file *file,
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uarg.i = (int __user *)arg;
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switch(cmd)
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{
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switch (cmd) {
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default:
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return -ENOTTY;
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case WDIOC_GETSUPPORT:
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return copy_to_user(uarg.ident, &ident, sizeof(ident)) ? -EFAULT : 0;
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return copy_to_user(uarg.ident, &ident,
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sizeof(ident)) ? -EFAULT : 0;
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case WDIOC_GETSTATUS:
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wdt_get_status(&status);
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@ -449,18 +448,16 @@ static int wdt_notify_sys(struct notifier_block *this, unsigned long code,
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return NOTIFY_DONE;
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}
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static const struct file_operations wdt_fops=
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{
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static const struct file_operations wdt_fops = {
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.owner = THIS_MODULE,
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.llseek = no_llseek,
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.write = wdt_write,
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.ioctl = wdt_ioctl,
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.unlocked_ioctl = wdt_ioctl,
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.open = wdt_open,
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.release = wdt_release,
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};
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static struct miscdevice wdt_miscdev=
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{
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static struct miscdevice wdt_miscdev = {
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.minor = WATCHDOG_MINOR,
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.name = "watchdog",
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.fops = &wdt_fops,
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@ -482,12 +479,12 @@ static int __init w83977f_wdt_init(void)
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*/
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if (wdt_set_timeout(timeout)) {
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wdt_set_timeout(DEFAULT_TIMEOUT);
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printk(KERN_INFO PFX "timeout value must be 15<=timeout<=7635, using %d\n",
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printk(KERN_INFO PFX
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"timeout value must be 15 <= timeout <= 7635, using %d\n",
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DEFAULT_TIMEOUT);
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}
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if (!request_region(IO_INDEX_PORT, 2, WATCHDOG_NAME))
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{
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if (!request_region(IO_INDEX_PORT, 2, WATCHDOG_NAME)) {
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printk(KERN_ERR PFX "I/O address 0x%04x already in use\n",
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IO_INDEX_PORT);
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rc = -EIO;
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@ -495,22 +492,22 @@ static int __init w83977f_wdt_init(void)
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}
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rc = register_reboot_notifier(&wdt_notifier);
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if (rc)
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{
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printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
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rc);
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if (rc) {
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printk(KERN_ERR PFX
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"cannot register reboot notifier (err=%d)\n", rc);
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goto err_out_region;
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}
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rc = misc_register(&wdt_miscdev);
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if (rc)
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{
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printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
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if (rc) {
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printk(KERN_ERR PFX
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"cannot register miscdev on minor=%d (err=%d)\n",
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wdt_miscdev.minor, rc);
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goto err_out_reboot;
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}
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printk(KERN_INFO PFX "initialized. timeout=%d sec (nowayout=%d testmode=%d)\n",
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printk(KERN_INFO PFX
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"initialized. timeout=%d sec (nowayout=%d testmode=%d)\n",
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timeout, nowayout, testmode);
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return 0;
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