mirror of https://gitee.com/openkylin/linux.git
[WATCHDOG 03/57] ali: watchdog locking and style
Clean up and check locking 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
b6b4d9b8d0
commit
173d95bc2e
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@ -19,8 +19,8 @@
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#include <linux/fs.h>
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#include <linux/pci.h>
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#include <asm/uaccess.h>
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#include <asm/io.h>
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#include <linux/uaccess.h>
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#include <linux/io.h>
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#define WATCHDOG_NAME "ALi_M1535"
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#define PFX WATCHDOG_NAME ": "
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@ -30,17 +30,21 @@
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static unsigned long ali_is_open;
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static char ali_expect_release;
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static struct pci_dev *ali_pci;
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static u32 ali_timeout_bits; /* stores the computed timeout */
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static u32 ali_timeout_bits; /* stores the computed timeout */
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static DEFINE_SPINLOCK(ali_lock); /* Guards the hardware */
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/* module parameters */
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static int timeout = WATCHDOG_TIMEOUT;
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module_param(timeout, int, 0);
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MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. (0<timeout<18000, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
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MODULE_PARM_DESC(timeout,
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"Watchdog timeout in seconds. (0 < timeout < 18000, default="
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__MODULE_STRING(WATCHDOG_TIMEOUT) ")");
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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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* ali_start - start watchdog countdown
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@ -103,15 +107,16 @@ static void ali_keepalive(void)
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static int ali_settimer(int t)
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{
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if(t < 0)
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if (t < 0)
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return -EINVAL;
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else if(t < 60)
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else if (t < 60)
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ali_timeout_bits = t|(1<<6);
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else if(t < 3600)
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else if (t < 3600)
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ali_timeout_bits = (t/60)|(1<<7);
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else if(t < 18000)
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else if (t < 18000)
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ali_timeout_bits = (t/300)|(1<<6)|(1<<7);
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else return -EINVAL;
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else
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return -EINVAL;
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timeout = t;
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return 0;
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@ -134,21 +139,22 @@ static int ali_settimer(int t)
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*/
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static ssize_t ali_write(struct file *file, const char __user *data,
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size_t len, loff_t * ppos)
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size_t len, 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 (len) {
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if (!nowayout) {
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size_t i;
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/* note: just in case someone wrote the magic character
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* five months ago... */
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/* note: just in case someone wrote the
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magic character five months ago... */
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ali_expect_release = 0;
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/* scan to see whether or not we got the magic character */
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/* scan to see whether or not we got
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the magic character */
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for (i = 0; i != len; i++) {
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char c;
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if(get_user(c, data+i))
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if (get_user(c, data+i))
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return -EFAULT;
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if (c == 'V')
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ali_expect_release = 42;
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@ -163,7 +169,6 @@ static ssize_t ali_write(struct file *file, const char __user *data,
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/*
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* ali_ioctl - handle watchdog ioctls
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* @inode: VFS inode
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* @file: VFS file pointer
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* @cmd: ioctl number
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* @arg: arguments to the ioctl
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@ -172,8 +177,7 @@ static ssize_t ali_write(struct file *file, const char __user *data,
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* we want an extension to enable irq ack monitoring and the like
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*/
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static int ali_ioctl(struct inode *inode, struct file *file,
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unsigned int cmd, unsigned long arg)
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static long ali_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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{
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void __user *argp = (void __user *)arg;
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int __user *p = argp;
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@ -186,57 +190,45 @@ static int ali_ioctl(struct inode *inode, struct file *file,
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};
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switch (cmd) {
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case WDIOC_GETSUPPORT:
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return copy_to_user(argp, &ident,
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sizeof (ident)) ? -EFAULT : 0;
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case WDIOC_GETSUPPORT:
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return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
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case WDIOC_GETSTATUS:
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case WDIOC_GETBOOTSTATUS:
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return put_user(0, p);
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case WDIOC_GETSTATUS:
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case WDIOC_GETBOOTSTATUS:
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return put_user(0, p);
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case WDIOC_KEEPALIVE:
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ali_keepalive();
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return 0;
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case WDIOC_SETOPTIONS:
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{
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int new_options, retval = -EINVAL;
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case WDIOC_KEEPALIVE:
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ali_keepalive();
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return 0;
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case WDIOC_SETOPTIONS:
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{
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int new_options, retval = -EINVAL;
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if (get_user (new_options, p))
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return -EFAULT;
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if (new_options & WDIOS_DISABLECARD) {
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ali_stop();
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retval = 0;
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}
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if (new_options & WDIOS_ENABLECARD) {
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ali_start();
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retval = 0;
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}
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return retval;
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if (get_user(new_options, p))
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return -EFAULT;
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if (new_options & WDIOS_DISABLECARD) {
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ali_stop();
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retval = 0;
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}
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case WDIOC_SETTIMEOUT:
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{
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int new_timeout;
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if (get_user(new_timeout, p))
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return -EFAULT;
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if (ali_settimer(new_timeout))
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return -EINVAL;
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ali_keepalive();
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/* Fall */
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if (new_options & WDIOS_ENABLECARD) {
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ali_start();
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retval = 0;
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}
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case WDIOC_GETTIMEOUT:
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return put_user(timeout, p);
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default:
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return -ENOTTY;
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return retval;
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}
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case WDIOC_SETTIMEOUT:
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{
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int new_timeout;
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if (get_user(new_timeout, p))
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return -EFAULT;
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if (ali_settimer(new_timeout))
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return -EINVAL;
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ali_keepalive();
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/* Fall */
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}
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case WDIOC_GETTIMEOUT:
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return put_user(timeout, p);
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default:
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return -ENOTTY;
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}
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}
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@ -274,10 +266,11 @@ static int ali_release(struct inode *inode, struct file *file)
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/*
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* Shut off the timer.
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*/
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if (ali_expect_release == 42) {
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if (ali_expect_release == 42)
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ali_stop();
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} else {
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printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
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else {
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printk(KERN_CRIT PFX
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"Unexpected close, not stopping watchdog!\n");
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ali_keepalive();
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}
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clear_bit(0, &ali_is_open);
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@ -292,13 +285,11 @@ static int ali_release(struct inode *inode, struct file *file)
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*/
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static int ali_notify_sys(struct notifier_block *this, unsigned long code, void *unused)
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static int ali_notify_sys(struct notifier_block *this,
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unsigned long code, void *unused)
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{
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if (code==SYS_DOWN || code==SYS_HALT) {
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/* Turn the WDT off */
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ali_stop();
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}
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if (code == SYS_DOWN || code == SYS_HALT)
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ali_stop(); /* Turn the WDT off */
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return NOTIFY_DONE;
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}
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@ -340,10 +331,10 @@ static int __init ali_find_watchdog(void)
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/* Check for the a 7101 PMU */
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pdev = pci_get_device(PCI_VENDOR_ID_AL, 0x7101, NULL);
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if(pdev == NULL)
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if (pdev == NULL)
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return -ENODEV;
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if(pci_enable_device(pdev)) {
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if (pci_enable_device(pdev)) {
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pci_dev_put(pdev);
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return -EIO;
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}
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@ -355,9 +346,12 @@ static int __init ali_find_watchdog(void)
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*/
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pci_read_config_dword(pdev, 0xCC, &wdog);
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wdog &= ~0x3F; /* Timer bits */
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wdog &= ~((1<<27)|(1<<26)|(1<<25)|(1<<24)); /* Issued events */
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wdog &= ~((1<<16)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9)); /* No monitor bits */
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/* Timer bits */
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wdog &= ~0x3F;
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/* Issued events */
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wdog &= ~((1<<27)|(1<<26)|(1<<25)|(1<<24));
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/* No monitor bits */
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wdog &= ~((1<<16)|(1<<13)|(1<<12)|(1<<11)|(1<<10)|(1<<9));
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pci_write_config_dword(pdev, 0xCC, wdog);
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@ -369,12 +363,12 @@ static int __init ali_find_watchdog(void)
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*/
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static const struct file_operations ali_fops = {
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.owner = THIS_MODULE,
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.llseek = no_llseek,
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.write = ali_write,
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.ioctl = ali_ioctl,
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.open = ali_open,
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.release = ali_release,
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.owner = THIS_MODULE,
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.llseek = no_llseek,
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.write = ali_write,
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.unlocked_ioctl = ali_ioctl,
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.open = ali_open,
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.release = ali_release,
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};
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static struct miscdevice ali_miscdev = {
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@ -399,15 +393,16 @@ static int __init watchdog_init(void)
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int ret;
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/* Check whether or not the hardware watchdog is there */
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if (ali_find_watchdog() != 0) {
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if (ali_find_watchdog() != 0)
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return -ENODEV;
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}
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/* Check that the timeout value is within it's range ; if not reset to the default */
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/* Check that the timeout value is within it's range;
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if not reset to the default */
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if (timeout < 1 || timeout >= 18000) {
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timeout = WATCHDOG_TIMEOUT;
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printk(KERN_INFO PFX "timeout value must be 0<timeout<18000, using %d\n",
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timeout);
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printk(KERN_INFO PFX
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"timeout value must be 0 < timeout < 18000, using %d\n",
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timeout);
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}
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/* Calculate the watchdog's timeout */
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@ -415,15 +410,16 @@ static int __init watchdog_init(void)
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ret = register_reboot_notifier(&ali_notifier);
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if (ret != 0) {
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printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
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ret);
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printk(KERN_ERR PFX
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"cannot register reboot notifier (err=%d)\n", ret);
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goto out;
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}
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ret = misc_register(&ali_miscdev);
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if (ret != 0) {
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printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
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WATCHDOG_MINOR, ret);
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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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WATCHDOG_MINOR, ret);
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goto unreg_reboot;
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}
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@ -32,8 +32,8 @@
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#include <linux/fs.h>
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#include <linux/pci.h>
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#include <asm/io.h>
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#include <asm/uaccess.h>
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#include <linux/io.h>
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#include <linux/uaccess.h>
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#include <asm/system.h>
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#define OUR_NAME "alim7101_wdt"
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@ -60,13 +60,17 @@
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*/
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#define WATCHDOG_TIMEOUT 30 /* 30 sec default timeout */
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static int timeout = WATCHDOG_TIMEOUT; /* in seconds, will be multiplied by HZ to get seconds to wait for a ping */
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/* in seconds, will be multiplied by HZ to get seconds to wait for a ping */
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static int timeout = WATCHDOG_TIMEOUT;
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module_param(timeout, int, 0);
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MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds. (1<=timeout<=3600, default=" __MODULE_STRING(WATCHDOG_TIMEOUT) ")");
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MODULE_PARM_DESC(timeout,
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"Watchdog timeout in seconds. (1<=timeout<=3600, default="
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__MODULE_STRING(WATCHDOG_TIMEOUT) ")");
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static int use_gpio = 0; /* Use the pic (for a1d revision alim7101) */
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static int use_gpio; /* Use the pic (for a1d revision alim7101) */
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module_param(use_gpio, int, 0);
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MODULE_PARM_DESC(use_gpio, "Use the gpio watchdog. (required by old cobalt boards)");
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MODULE_PARM_DESC(use_gpio,
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"Use the gpio watchdog (required by old cobalt boards).");
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static void wdt_timer_ping(unsigned long);
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static DEFINE_TIMER(timer, wdt_timer_ping, 0, 1);
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@ -77,8 +81,9 @@ static struct pci_dev *alim7101_pmu;
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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="
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__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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* Whack the dog
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@ -89,23 +94,26 @@ static void wdt_timer_ping(unsigned long data)
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/* If we got a heartbeat pulse within the WDT_US_INTERVAL
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* we agree to ping the WDT
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*/
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char tmp;
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char tmp;
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if(time_before(jiffies, next_heartbeat))
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{
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if (time_before(jiffies, next_heartbeat)) {
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/* Ping the WDT (this is actually a disarm/arm sequence) */
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pci_read_config_byte(alim7101_pmu, 0x92, &tmp);
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pci_write_config_byte(alim7101_pmu, ALI_7101_WDT, (tmp & ~ALI_WDT_ARM));
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pci_write_config_byte(alim7101_pmu, ALI_7101_WDT, (tmp | ALI_WDT_ARM));
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pci_write_config_byte(alim7101_pmu,
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ALI_7101_WDT, (tmp & ~ALI_WDT_ARM));
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pci_write_config_byte(alim7101_pmu,
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ALI_7101_WDT, (tmp | ALI_WDT_ARM));
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if (use_gpio) {
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pci_read_config_byte(alim7101_pmu, ALI_7101_GPIO_O, &tmp);
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pci_write_config_byte(alim7101_pmu, ALI_7101_GPIO_O, tmp
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| 0x20);
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pci_write_config_byte(alim7101_pmu, ALI_7101_GPIO_O, tmp
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& ~0x20);
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pci_read_config_byte(alim7101_pmu,
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ALI_7101_GPIO_O, &tmp);
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pci_write_config_byte(alim7101_pmu,
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ALI_7101_GPIO_O, tmp | 0x20);
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pci_write_config_byte(alim7101_pmu,
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ALI_7101_GPIO_O, tmp & ~0x20);
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}
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} else {
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printk(KERN_WARNING PFX "Heartbeat lost! Will not ping the watchdog\n");
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printk(KERN_WARNING PFX
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"Heartbeat lost! Will not ping the watchdog\n");
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}
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/* Re-set the timer interval */
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mod_timer(&timer, jiffies + WDT_INTERVAL);
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@ -121,17 +129,23 @@ static void wdt_change(int writeval)
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pci_read_config_byte(alim7101_pmu, ALI_7101_WDT, &tmp);
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if (writeval == WDT_ENABLE) {
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pci_write_config_byte(alim7101_pmu, ALI_7101_WDT, (tmp | ALI_WDT_ARM));
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pci_write_config_byte(alim7101_pmu,
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ALI_7101_WDT, (tmp | ALI_WDT_ARM));
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if (use_gpio) {
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pci_read_config_byte(alim7101_pmu, ALI_7101_GPIO_O, &tmp);
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pci_write_config_byte(alim7101_pmu, ALI_7101_GPIO_O, tmp & ~0x20);
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pci_read_config_byte(alim7101_pmu,
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ALI_7101_GPIO_O, &tmp);
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pci_write_config_byte(alim7101_pmu,
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ALI_7101_GPIO_O, tmp & ~0x20);
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}
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} else {
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pci_write_config_byte(alim7101_pmu, ALI_7101_WDT, (tmp & ~ALI_WDT_ARM));
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pci_write_config_byte(alim7101_pmu,
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ALI_7101_WDT, (tmp & ~ALI_WDT_ARM));
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if (use_gpio) {
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pci_read_config_byte(alim7101_pmu, ALI_7101_GPIO_O, &tmp);
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pci_write_config_byte(alim7101_pmu, ALI_7101_GPIO_O, tmp | 0x20);
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pci_read_config_byte(alim7101_pmu,
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ALI_7101_GPIO_O, &tmp);
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pci_write_config_byte(alim7101_pmu,
|
||||
ALI_7101_GPIO_O, tmp | 0x20);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -169,10 +183,11 @@ static void wdt_keepalive(void)
|
|||
* /dev/watchdog handling
|
||||
*/
|
||||
|
||||
static ssize_t fop_write(struct file * file, const char __user * buf, size_t count, loff_t * ppos)
|
||||
static ssize_t fop_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 ofs;
|
||||
|
||||
|
|
@ -195,119 +210,116 @@ static ssize_t fop_write(struct file * file, const char __user * buf, size_t cou
|
|||
return count;
|
||||
}
|
||||
|
||||
static int fop_open(struct inode * inode, struct file * file)
|
||||
static int fop_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
/* Just in case we're already talking to someone... */
|
||||
if(test_and_set_bit(0, &wdt_is_open))
|
||||
if (test_and_set_bit(0, &wdt_is_open))
|
||||
return -EBUSY;
|
||||
/* Good, fire up the show */
|
||||
wdt_startup();
|
||||
return nonseekable_open(inode, file);
|
||||
}
|
||||
|
||||
static int fop_close(struct inode * inode, struct file * file)
|
||||
static int fop_close(struct inode *inode, struct file *file)
|
||||
{
|
||||
if(wdt_expect_close == 42)
|
||||
if (wdt_expect_close == 42)
|
||||
wdt_turnoff();
|
||||
else {
|
||||
/* wim: shouldn't there be a: del_timer(&timer); */
|
||||
printk(KERN_CRIT PFX "device file closed unexpectedly. Will not stop the WDT!\n");
|
||||
printk(KERN_CRIT PFX
|
||||
"device file closed unexpectedly. Will not stop the WDT!\n");
|
||||
}
|
||||
clear_bit(0, &wdt_is_open);
|
||||
wdt_expect_close = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int fop_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
|
||||
static long fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
|
||||
{
|
||||
void __user *argp = (void __user *)arg;
|
||||
int __user *p = argp;
|
||||
static struct watchdog_info ident =
|
||||
{
|
||||
.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
|
||||
static struct watchdog_info ident = {
|
||||
.options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT
|
||||
| WDIOF_MAGICCLOSE,
|
||||
.firmware_version = 1,
|
||||
.identity = "ALiM7101",
|
||||
};
|
||||
|
||||
switch(cmd)
|
||||
switch (cmd) {
|
||||
case WDIOC_GETSUPPORT:
|
||||
return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
|
||||
case WDIOC_GETSTATUS:
|
||||
case WDIOC_GETBOOTSTATUS:
|
||||
return put_user(0, p);
|
||||
case WDIOC_KEEPALIVE:
|
||||
wdt_keepalive();
|
||||
return 0;
|
||||
case WDIOC_SETOPTIONS:
|
||||
{
|
||||
case WDIOC_GETSUPPORT:
|
||||
return copy_to_user(argp, &ident, sizeof(ident))?-EFAULT:0;
|
||||
case WDIOC_GETSTATUS:
|
||||
case WDIOC_GETBOOTSTATUS:
|
||||
return put_user(0, p);
|
||||
case WDIOC_KEEPALIVE:
|
||||
wdt_keepalive();
|
||||
return 0;
|
||||
case WDIOC_SETOPTIONS:
|
||||
{
|
||||
int new_options, retval = -EINVAL;
|
||||
int new_options, retval = -EINVAL;
|
||||
|
||||
if(get_user(new_options, p))
|
||||
return -EFAULT;
|
||||
|
||||
if(new_options & WDIOS_DISABLECARD) {
|
||||
wdt_turnoff();
|
||||
retval = 0;
|
||||
}
|
||||
|
||||
if(new_options & WDIOS_ENABLECARD) {
|
||||
wdt_startup();
|
||||
retval = 0;
|
||||
}
|
||||
|
||||
return retval;
|
||||
if (get_user(new_options, p))
|
||||
return -EFAULT;
|
||||
if (new_options & WDIOS_DISABLECARD) {
|
||||
wdt_turnoff();
|
||||
retval = 0;
|
||||
}
|
||||
case WDIOC_SETTIMEOUT:
|
||||
{
|
||||
int new_timeout;
|
||||
|
||||
if(get_user(new_timeout, p))
|
||||
return -EFAULT;
|
||||
|
||||
if(new_timeout < 1 || new_timeout > 3600) /* arbitrary upper limit */
|
||||
return -EINVAL;
|
||||
|
||||
timeout = new_timeout;
|
||||
wdt_keepalive();
|
||||
/* Fall through */
|
||||
if (new_options & WDIOS_ENABLECARD) {
|
||||
wdt_startup();
|
||||
retval = 0;
|
||||
}
|
||||
case WDIOC_GETTIMEOUT:
|
||||
return put_user(timeout, p);
|
||||
default:
|
||||
return -ENOTTY;
|
||||
return retval;
|
||||
}
|
||||
case WDIOC_SETTIMEOUT:
|
||||
{
|
||||
int new_timeout;
|
||||
|
||||
if (get_user(new_timeout, p))
|
||||
return -EFAULT;
|
||||
/* arbitrary upper limit */
|
||||
if (new_timeout < 1 || new_timeout > 3600)
|
||||
return -EINVAL;
|
||||
timeout = new_timeout;
|
||||
wdt_keepalive();
|
||||
/* Fall through */
|
||||
}
|
||||
case WDIOC_GETTIMEOUT:
|
||||
return put_user(timeout, p);
|
||||
default:
|
||||
return -ENOTTY;
|
||||
}
|
||||
}
|
||||
|
||||
static const struct file_operations wdt_fops = {
|
||||
.owner= THIS_MODULE,
|
||||
.llseek= no_llseek,
|
||||
.write= fop_write,
|
||||
.open= fop_open,
|
||||
.release= fop_close,
|
||||
.ioctl= fop_ioctl,
|
||||
.owner = THIS_MODULE,
|
||||
.llseek = no_llseek,
|
||||
.write = fop_write,
|
||||
.open = fop_open,
|
||||
.release = fop_close,
|
||||
.unlocked_ioctl = fop_ioctl,
|
||||
};
|
||||
|
||||
static struct miscdevice wdt_miscdev = {
|
||||
.minor=WATCHDOG_MINOR,
|
||||
.name="watchdog",
|
||||
.fops=&wdt_fops,
|
||||
.minor = WATCHDOG_MINOR,
|
||||
.name = "watchdog",
|
||||
.fops = &wdt_fops,
|
||||
};
|
||||
|
||||
/*
|
||||
* Notifier for system down
|
||||
*/
|
||||
|
||||
static int wdt_notify_sys(struct notifier_block *this, unsigned long code, void *unused)
|
||||
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_turnoff();
|
||||
|
||||
if (code==SYS_RESTART) {
|
||||
if (code == SYS_RESTART) {
|
||||
/*
|
||||
* Cobalt devices have no way of rebooting themselves other than
|
||||
* getting the watchdog to pull reset, so we restart the watchdog on
|
||||
* reboot with no heartbeat
|
||||
* Cobalt devices have no way of rebooting themselves other
|
||||
* than getting the watchdog to pull reset, so we restart the
|
||||
* watchdog on reboot with no heartbeat
|
||||
*/
|
||||
wdt_change(WDT_ENABLE);
|
||||
printk(KERN_INFO PFX "Watchdog timer is now enabled with no heartbeat - should reboot in ~1 second.\n");
|
||||
|
|
@ -320,8 +332,7 @@ static int wdt_notify_sys(struct notifier_block *this, unsigned long code, void
|
|||
* turn the timebomb registers off.
|
||||
*/
|
||||
|
||||
static struct notifier_block wdt_notifier=
|
||||
{
|
||||
static struct notifier_block wdt_notifier = {
|
||||
.notifier_call = wdt_notify_sys,
|
||||
};
|
||||
|
||||
|
|
@ -354,7 +365,8 @@ static int __init alim7101_wdt_init(void)
|
|||
ali1543_south = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533,
|
||||
NULL);
|
||||
if (!ali1543_south) {
|
||||
printk(KERN_INFO PFX "ALi 1543 South-Bridge not present - WDT not set\n");
|
||||
printk(KERN_INFO PFX
|
||||
"ALi 1543 South-Bridge not present - WDT not set\n");
|
||||
goto err_out;
|
||||
}
|
||||
pci_read_config_byte(ali1543_south, 0x5e, &tmp);
|
||||
|
|
@ -370,17 +382,18 @@ static int __init alim7101_wdt_init(void)
|
|||
goto err_out;
|
||||
}
|
||||
|
||||
if(timeout < 1 || timeout > 3600) /* arbitrary upper limit */
|
||||
{
|
||||
if (timeout < 1 || timeout > 3600) {
|
||||
/* arbitrary upper limit */
|
||||
timeout = WATCHDOG_TIMEOUT;
|
||||
printk(KERN_INFO PFX "timeout value must be 1<=x<=3600, using %d\n",
|
||||
timeout);
|
||||
printk(KERN_INFO PFX
|
||||
"timeout value must be 1 <= x <= 3600, using %d\n",
|
||||
timeout);
|
||||
}
|
||||
|
||||
rc = register_reboot_notifier(&wdt_notifier);
|
||||
if (rc) {
|
||||
printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
|
||||
rc);
|
||||
printk(KERN_ERR PFX
|
||||
"cannot register reboot notifier (err=%d)\n", rc);
|
||||
goto err_out;
|
||||
}
|
||||
|
||||
|
|
@ -391,9 +404,8 @@ static int __init alim7101_wdt_init(void)
|
|||
goto err_out_reboot;
|
||||
}
|
||||
|
||||
if (nowayout) {
|
||||
if (nowayout)
|
||||
__module_get(THIS_MODULE);
|
||||
}
|
||||
|
||||
printk(KERN_INFO PFX "WDT driver for ALi M7101 initialised. timeout=%d sec (nowayout=%d)\n",
|
||||
timeout, nowayout);
|
||||
|
|
|
|||
Loading…
Reference in New Issue