Observed that the w83627hf watchdog timer start counting during reboot. If the system load the driver after 5 minutes, it rebooted immediately because of timer expired. For example, fsck took more than 5 minutes to run, then reboot will occurred.
Signed-off-by: Tony Chung <[email protected]> --- drivers/watchdog/w83627hf_wdt.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/drivers/watchdog/w83627hf_wdt.c b/drivers/watchdog/w83627hf_wdt.c index 8f1111d..47eb233 100644 --- a/drivers/watchdog/w83627hf_wdt.c +++ b/drivers/watchdog/w83627hf_wdt.c @@ -174,6 +174,11 @@ static void w83627hf_init(void) outb_p(0xF7, WDT_EFER); /* Select CRF7 */ t = inb_p(WDT_EFDR); /* read CRF7 */ + if (t & 0x10) { + pr_info("Watchdog Timer timeout occurred!"); + t &= ~0x10; /* clear the event */ + pr_info("Event cleared\n"); + } t &= ~0xC0; /* disable keyboard & mouse turning off watchdog */ outb_p(t, WDT_EFDR); /* Write back to CRF7 */ -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
