diff options
| author | Matthias Fuchs <matthias.fuchs@esd-electronics.com> | 2008-11-05 23:53:56 +0300 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2008-11-08 21:38:59 +0300 |
| commit | 0a0e9e0cb90170f95b4351597fd5c0e65fab6bc5 (patch) | |
| tree | 740f43631b98680b9cdac96b0ac55c9193188a38 /drivers/watchdog/booke_wdt.c | |
| parent | b41d6fee37e2bebd58ad3623c288197e75787905 (diff) | |
| download | linux-0a0e9e0cb90170f95b4351597fd5c0e65fab6bc5.tar.xz | |
powerpc: Fix Book-E watchdog timer interval setting
This patch fixes the setting of the Book-E watchdog timer interval setup
on initialization and by ioctl().
On initialization the period bits have to be masked before setting
a new period.
In WDIOC_SETTIMEOUT ioctl we have to use the correct mask.
Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
Acked-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'drivers/watchdog/booke_wdt.c')
| -rw-r--r-- | drivers/watchdog/booke_wdt.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/watchdog/booke_wdt.c b/drivers/watchdog/booke_wdt.c index c3b78a76f173..225398fd5049 100644 --- a/drivers/watchdog/booke_wdt.c +++ b/drivers/watchdog/booke_wdt.c @@ -42,8 +42,10 @@ u32 booke_wdt_period = WDT_PERIOD_DEFAULT; #ifdef CONFIG_FSL_BOOKE #define WDTP(x) ((((63-x)&0x3)<<30)|(((63-x)&0x3c)<<15)) +#define WDTP_MASK (WDTP(0)) #else #define WDTP(x) (TCR_WP(x)) +#define WDTP_MASK (TCR_WP_MASK) #endif static DEFINE_SPINLOCK(booke_wdt_lock); @@ -65,6 +67,7 @@ static void __booke_wdt_enable(void *data) /* clear status before enabling watchdog */ __booke_wdt_ping(NULL); val = mfspr(SPRN_TCR); + val &= ~WDTP_MASK; val |= (TCR_WIE|TCR_WRC(WRC_CHIP)|WDTP(booke_wdt_period)); mtspr(SPRN_TCR, val); @@ -114,7 +117,7 @@ static long booke_wdt_ioctl(struct file *file, case WDIOC_SETTIMEOUT: if (get_user(booke_wdt_period, p)) return -EFAULT; - mtspr(SPRN_TCR, (mfspr(SPRN_TCR) & ~WDTP(0)) | + mtspr(SPRN_TCR, (mfspr(SPRN_TCR) & ~WDTP_MASK) | WDTP(booke_wdt_period)); return 0; case WDIOC_GETTIMEOUT: |