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[WATCHDOG] timers cleanup 

- Use timer macros to set function and data members and to modify
  expiration time.
- Use DEFINE_TIMER for single (platform dependent) watchdog timers and
  do not init them at run-time in these cases.
- del_timer_sync is common in most cases -- we want to wait for timer
  function if it's still running.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Steve Hill <steve@navaho.co.uk>
Cc: Heiko Ronsdorf <hero@ihg.uni-duisburg.de>
Cc: Fernando Fuganti <fuganti@conectiva.com.br>
Cc: Gergely Madarasz <gorgo@itc.hu>
Cc: Ken Hollis <khollis@bitgate.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Jiri Slaby 2007-02-08 18:39:36 +01:00 committed by Wim Van Sebroeck
parent 35fcf53870
commit 82eb7c5059
9 changed files with 31 additions and 73 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/char/watchdog/alim7101_wdt.c
View File

@ -69,7 +69,7 @@ module_param(use_gpio, int, 0);
MODULE_PARM_DESC(use_gpio, "Use the gpio watchdog. (required by old cobalt boards)");
static void wdt_timer_ping(unsigned long);
static struct timer_list timer;
static DEFINE_TIMER(timer, wdt_timer_ping, 0, 1);
static unsigned long next_heartbeat;
static unsigned long wdt_is_open;
static char wdt_expect_close;
@ -108,8 +108,7 @@ static void wdt_timer_ping(unsigned long data)
printk(KERN_WARNING PFX "Heartbeat lost! Will not ping the watchdog\n");
}
/* Re-set the timer interval */
timer.expires = jiffies + WDT_INTERVAL;
add_timer(&timer);
mod_timer(&timer, jiffies + WDT_INTERVAL);
}
/*
@ -147,9 +146,7 @@ static void wdt_startup(void)
wdt_change(WDT_ENABLE);
/* Start the timer */
timer.expires = jiffies + WDT_INTERVAL;
add_timer(&timer);
mod_timer(&timer, jiffies + WDT_INTERVAL);
printk(KERN_INFO PFX "Watchdog timer is now enabled.\n");
}
@ -380,10 +377,6 @@ static int __init alim7101_wdt_init(void)
timeout);
}
init_timer(&timer);
timer.function = wdt_timer_ping;
timer.data = 1;
rc = misc_register(&wdt_miscdev);
if (rc) {
printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",

13
drivers/char/watchdog/cpu5wdt.c
View File

@ -80,10 +80,8 @@ static void cpu5wdt_trigger(unsigned long unused)
outb(1, port + CPU5WDT_TRIGGER_REG);
/* requeue?? */
if( cpu5wdt_device.queue && ticks ) {
cpu5wdt_device.timer.expires = jiffies + CPU5WDT_INTERVAL;
add_timer(&cpu5wdt_device.timer);
}
if (cpu5wdt_device.queue && ticks)
mod_timer(&cpu5wdt_device.timer, jiffies + CPU5WDT_INTERVAL);
else {
/* ticks doesn't matter anyway */
complete(&cpu5wdt_device.stop);
@ -109,8 +107,7 @@ static void cpu5wdt_start(void)
outb(1, port + CPU5WDT_MODE_REG);
outb(0, port + CPU5WDT_RESET_REG);
outb(0, port + CPU5WDT_ENABLE_REG);
cpu5wdt_device.timer.expires = jiffies + CPU5WDT_INTERVAL;
add_timer(&cpu5wdt_device.timer);
mod_timer(&cpu5wdt_device.timer, jiffies + CPU5WDT_INTERVAL);
}
/* if process dies, counter is not decremented */
cpu5wdt_device.running++;
@ -245,9 +242,7 @@ static int __devinit cpu5wdt_init(void)
clear_bit(0, &cpu5wdt_device.inuse);
init_timer(&cpu5wdt_device.timer);
cpu5wdt_device.timer.function = cpu5wdt_trigger;
cpu5wdt_device.timer.data = 0;
setup_timer(&cpu5wdt_device.timer, cpu5wdt_trigger, 0);
cpu5wdt_device.default_ticks = ticks;

16
drivers/char/watchdog/machzwd.c
View File

@ -118,12 +118,14 @@ static int action = 0;
module_param(action, int, 0);
MODULE_PARM_DESC(action, "after watchdog resets, generate: 0 = RESET(*) 1 = SMI 2 = NMI 3 = SCI");
static void zf_ping(unsigned long data);
static int zf_action = GEN_RESET;
static unsigned long zf_is_open;
static char zf_expect_close;
static spinlock_t zf_lock;
static spinlock_t zf_port_lock;
static struct timer_list zf_timer;
static DEFINE_TIMER(zf_timer, zf_ping, 0, 0);
static unsigned long next_heartbeat = 0;
@ -220,9 +222,7 @@ static void zf_timer_on(void)
next_heartbeat = jiffies + ZF_USER_TIMEO;
/* start the timer for internal ping */
zf_timer.expires = jiffies + ZF_HW_TIMEO;
add_timer(&zf_timer);
mod_timer(&zf_timer, jiffies + ZF_HW_TIMEO);
/* start watchdog timer */
ctrl_reg = zf_get_control();
@ -260,8 +260,7 @@ static void zf_ping(unsigned long data)
zf_set_control(ctrl_reg);
spin_unlock_irqrestore(&zf_port_lock, flags);
zf_timer.expires = jiffies + ZF_HW_TIMEO;
add_timer(&zf_timer);
mod_timer(&zf_timer, jiffies + ZF_HW_TIMEO);
}else{
printk(KERN_CRIT PFX ": I will reset your machine\n");
}
@ -465,11 +464,6 @@ static int __init zf_init(void)
zf_set_status(0);
zf_set_control(0);
/* this is the timer that will do the hard work */
init_timer(&zf_timer);
zf_timer.function = zf_ping;
zf_timer.data = 0;
return 0;
no_reboot:

14
drivers/char/watchdog/mixcomwd.c
View File

@ -56,11 +56,13 @@ static int mixcomwd_ioports[] = { 0x180, 0x280, 0x380, 0x000 };
#define FLASHCOM_WATCHDOG_OFFSET 0x4
#define FLASHCOM_ID 0x18
static void mixcomwd_timerfun(unsigned long d);
static unsigned long mixcomwd_opened; /* long req'd for setbit --RR */
static int watchdog_port;
static int mixcomwd_timer_alive;
static DEFINE_TIMER(mixcomwd_timer, NULL, 0, 0);
static DEFINE_TIMER(mixcomwd_timer, mixcomwd_timerfun, 0, 0);
static char expect_close;
static int nowayout = WATCHDOG_NOWAYOUT;
@ -77,7 +79,7 @@ static void mixcomwd_timerfun(unsigned long d)
{
mixcomwd_ping();
mod_timer(&mixcomwd_timer,jiffies+ 5*HZ);
mod_timer(&mixcomwd_timer, jiffies + 5 * HZ);
}
/*
@ -114,12 +116,8 @@ static int mixcomwd_release(struct inode *inode, struct file *file)
printk(KERN_ERR "mixcomwd: release called while internal timer alive");
return -EBUSY;
}
init_timer(&mixcomwd_timer);
mixcomwd_timer.expires=jiffies + 5 * HZ;
mixcomwd_timer.function=mixcomwd_timerfun;
mixcomwd_timer.data=0;
mixcomwd_timer_alive=1;
add_timer(&mixcomwd_timer);
mod_timer(&mixcomwd_timer, jiffies + 5 * HZ);
} else {
printk(KERN_CRIT "mixcomwd: WDT device closed unexpectedly. WDT will not stop!\n");
}
@ -285,7 +283,7 @@ static void __exit mixcomwd_exit(void)
if(mixcomwd_timer_alive) {
printk(KERN_WARNING "mixcomwd: I quit now, hardware will"
" probably reboot!\n");
del_timer(&mixcomwd_timer);
del_timer_sync(&mixcomwd_timer);
mixcomwd_timer_alive=0;
}
}

4
drivers/char/watchdog/pcwd.c
View File

@ -843,9 +843,7 @@ static int __devinit pcwatchdog_init(int base_addr)
/* clear the "card caused reboot" flag */
pcwd_clear_status();
init_timer(&pcwd_private.timer);
pcwd_private.timer.function = pcwd_timer_ping;
pcwd_private.timer.data = 0;
setup_timer(&pcwd_private.timer, pcwd_timer_ping, 0);
/* Disable the board */
pcwd_stop();

12
drivers/char/watchdog/sbc60xxwdt.c
View File

@ -103,7 +103,7 @@ module_param(nowayout, int, 0);
MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
static void wdt_timer_ping(unsigned long);
static struct timer_list timer;
static DEFINE_TIMER(timer, wdt_timer_ping, 0, 0);
static unsigned long next_heartbeat;
static unsigned long wdt_is_open;
static char wdt_expect_close;
@ -122,8 +122,7 @@ static void wdt_timer_ping(unsigned long data)
/* Ping the WDT by reading from wdt_start */
inb_p(wdt_start);
/* Re-set the timer interval */
timer.expires = jiffies + WDT_INTERVAL;
add_timer(&timer);
mod_timer(&timer, jiffies + WDT_INTERVAL);
} else {
printk(KERN_WARNING PFX "Heartbeat lost! Will not ping the watchdog\n");
}
@ -138,8 +137,7 @@ static void wdt_startup(void)
next_heartbeat = jiffies + (timeout * HZ);
/* Start the timer */
timer.expires = jiffies + WDT_INTERVAL;
add_timer(&timer);
mod_timer(&timer, jiffies + WDT_INTERVAL);
printk(KERN_INFO PFX "Watchdog timer is now enabled.\n");
}
@ -363,10 +361,6 @@ static int __init sbc60xxwdt_init(void)
}
}
init_timer(&timer);
timer.function = wdt_timer_ping;
timer.data = 0;
rc = misc_register(&wdt_miscdev);
if (rc)
{

12
drivers/char/watchdog/sc520_wdt.c
View File

@ -121,7 +121,7 @@ MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" _
static __u16 __iomem *wdtmrctl;
static void wdt_timer_ping(unsigned long);
static struct timer_list timer;
static DEFINE_TIMER(timer, wdt_timer_ping, 0, 0);
static unsigned long next_heartbeat;
static unsigned long wdt_is_open;
static char wdt_expect_close;
@ -145,8 +145,7 @@ static void wdt_timer_ping(unsigned long data)
spin_unlock(&wdt_spinlock);
/* Re-set the timer interval */
timer.expires = jiffies + WDT_INTERVAL;
add_timer(&timer);
mod_timer(&timer, jiffies + WDT_INTERVAL);
} else {
printk(KERN_WARNING PFX "Heartbeat lost! Will not ping the watchdog\n");
}
@ -179,8 +178,7 @@ static int wdt_startup(void)
next_heartbeat = jiffies + (timeout * HZ);
/* Start the timer */
timer.expires = jiffies + WDT_INTERVAL;
add_timer(&timer);
mod_timer(&timer, jiffies + WDT_INTERVAL);
/* Start the watchdog */
wdt_config(WDT_ENB | WDT_WRST_ENB | WDT_EXP_SEL_04);
@ -389,10 +387,6 @@ static int __init sc520_wdt_init(void)
spin_lock_init(&wdt_spinlock);
init_timer(&timer);
timer.function = wdt_timer_ping;
timer.data = 0;
/* Check that the timeout value is within it's range ; if not reset to the default */
if (wdt_set_heartbeat(timeout)) {
wdt_set_heartbeat(WATCHDOG_TIMEOUT);

8
drivers/char/watchdog/shwdt.c
View File

@ -65,10 +65,12 @@ static int clock_division_ratio = WTCSR_CKS_4096;
#define next_ping_period(cks) msecs_to_jiffies(cks - 4)
static void sh_wdt_ping(unsigned long data);
static unsigned long shwdt_is_open;
static struct watchdog_info sh_wdt_info;
static char shwdt_expect_close;
static struct timer_list timer;
static DEFINE_TIMER(timer, sh_wdt_ping, 0, 0);
static unsigned long next_heartbeat;
#define WATCHDOG_HEARTBEAT 30 /* 30 sec default heartbeat */
@ -433,10 +435,6 @@ static int __init sh_wdt_init(void)
"be 1<=x<=3600, using %d\n", heartbeat);
}
init_timer(&timer);
timer.function = sh_wdt_ping;
timer.data = 0;
rc = register_reboot_notifier(&sh_wdt_notifier);
if (unlikely(rc)) {
printk(KERN_ERR PFX "Can't register reboot notifier (err=%d)\n",

12
drivers/char/watchdog/w83877f_wdt.c
View File

@ -90,7 +90,7 @@ module_param(nowayout, int, 0);
MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
static void wdt_timer_ping(unsigned long);
static struct timer_list timer;
static DEFINE_TIMER(timer, wdt_timer_ping, 0, 0);
static unsigned long next_heartbeat;
static unsigned long wdt_is_open;
static char wdt_expect_close;
@ -114,8 +114,7 @@ static void wdt_timer_ping(unsigned long data)
inb_p(WDT_PING);
/* Re-set the timer interval */
timer.expires = jiffies + WDT_INTERVAL;
add_timer(&timer);
mod_timer(&timer, jiffies + WDT_INTERVAL);
spin_unlock(&wdt_spinlock);
@ -155,8 +154,7 @@ static void wdt_startup(void)
next_heartbeat = jiffies + (timeout * HZ);
/* Start the timer */
timer.expires = jiffies + WDT_INTERVAL;
add_timer(&timer);
mod_timer(&timer, jiffies + WDT_INTERVAL);
wdt_change(WDT_ENABLE);
@ -377,10 +375,6 @@ static int __init w83877f_wdt_init(void)
goto err_out_region1;
}
init_timer(&timer);
timer.function = wdt_timer_ping;
timer.data = 0;
rc = misc_register(&wdt_miscdev);
if (rc)
{