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watchdog: Propagate Book E WDT period changes to all cores

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When the watchdog period is changed, it needs to be propagated to all cores
in addition to the core that performed the change.

Signed-off-by: Randy Vinson <rvinson@mvista.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Randy Vinson 2010-12-06 14:02:23 -07:00 committed by Wim Van Sebroeck
parent 5d63c13415
commit 6ae98ed186
1 changed files with 17 additions and 2 deletions
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19
drivers/watchdog/booke_wdt.c
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@ -85,6 +85,22 @@ static unsigned int sec_to_period(unsigned int secs)
return 0;
}
static void __booke_wdt_set(void *data)
{
u32 val;
val = mfspr(SPRN_TCR);
val &= ~WDTP_MASK;
val |= WDTP(booke_wdt_period);
mtspr(SPRN_TCR, val);
}
static void booke_wdt_set(void)
{
on_each_cpu(__booke_wdt_set, NULL, 0);
}
static void __booke_wdt_ping(void *data)
{
mtspr(SPRN_TSR, TSR_ENW|TSR_WIS);
@ -181,8 +197,7 @@ static long booke_wdt_ioctl(struct file *file,
#else
booke_wdt_period = tmp;
#endif
mtspr(SPRN_TCR, (mfspr(SPRN_TCR) & ~WDTP_MASK) |
WDTP(booke_wdt_period));
booke_wdt_set();
return 0;
case WDIOC_GETTIMEOUT:
return put_user(booke_wdt_period, p);