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| author | Randy Vinson <rvinson@mvista.com> | 2010-12-06 14:02:23 -0700 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2011-01-12 10:24:38 +0000 |
| commit | 6ae98ed186cbe6909105c536c24419e52af8fc66 (patch) | |
| tree | 2d8d97791e1f8af3766f5599d0151ebf083a6ed7 /drivers/watchdog | |
| parent | 5d63c13415db2819590bba975dd023eaa593ddc3 (diff) | |
| download | linux-6ae98ed186cbe6909105c536c24419e52af8fc66.tar.gz linux-6ae98ed186cbe6909105c536c24419e52af8fc66.tar.bz2 linux-6ae98ed186cbe6909105c536c24419e52af8fc66.zip | |
watchdog: Propagate Book E WDT period changes to all cores
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>
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/booke_wdt.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/watchdog/booke_wdt.c b/drivers/watchdog/booke_wdt.c index 636e013e221e..7e7ec9c35b6a 100644 --- a/drivers/watchdog/booke_wdt.c +++ b/drivers/watchdog/booke_wdt.c @@ -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); |