diff options
| author | JP Abgrall <jpa@google.com> | 2011-08-26 18:39:17 -0700 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2013-09-14 00:47:53 -0700 |
| commit | acc35f2630b928a0af53e65c14dcd08780209910 (patch) | |
| tree | 9bbbda5e52a14dd2aa634a781eb9cfb29cc18c57 /drivers/watchdog | |
| parent | 9de5a21d4c48c8b9e436f7691eee9f04cbb04ba4 (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>
Rebase-Id: R89dfdbb2a0d1c756a79b5e77205d74a27ab6185b
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 dbb95f9f0d92..aa4f7b68c5e7 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; |