diff options
| author | JP Abgrall <jpa@google.com> | 2011-08-26 18:39:17 -0700 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2011-11-30 21:37:12 -0800 |
| commit | 06483276516d043b568054d63b658f616d12e368 (patch) | |
| tree | c1048c9200bf98771c013f926ca0792d6dcf3ec8 /drivers/watchdog | |
| parent | 13907ab639918deee8b05080cfccee504dfbe567 (diff) | |
watchdog: tegra_wdt: give time for spinlock lockup detection to work
To allow the spinlock lockup detection to actually trigger after
60 seconds, the tegra_wdt heartbeat needs to be longer than that.
Bumping it to 120sec, as at the 50% marker the watchdog takes an
interrupt.
Change-Id: I099fd7720d65c0e2050fa91161e30485fe84a1ed
Signed-off-by: JP Abgrall <jpa@google.com>
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/tegra_wdt.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/watchdog/tegra_wdt.c b/drivers/watchdog/tegra_wdt.c index d11b99816ca6..1a73e36dc6cf 100644 --- a/drivers/watchdog/tegra_wdt.c +++ b/drivers/watchdog/tegra_wdt.c @@ -50,7 +50,11 @@ #define WDT_SEL_TMR1 (0 << 4) #define WDT_SYS_RST (1 << 2) -static int heartbeat = 30; /* must be greater than MIN_WDT_PERIOD and lower than MAX_WDT_PERIOD */ +/* + * For spinlock lockup detection to work, the heartbeat should be 2*lockup + * for cases where the spinlock disabled irqs. + */ +static int heartbeat = 120; /* must be greater than MIN_WDT_PERIOD and lower than MAX_WDT_PERIOD */ struct tegra_wdt { struct miscdevice miscdev; |