diff options
Diffstat (limited to 'drivers/watchdog/sp5100_tco.c')
| -rw-r--r-- | drivers/watchdog/sp5100_tco.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/watchdog/sp5100_tco.c b/drivers/watchdog/sp5100_tco.c index bb6c4608c1c0..23246cb40598 100644 --- a/drivers/watchdog/sp5100_tco.c +++ b/drivers/watchdog/sp5100_tco.c @@ -273,14 +273,20 @@ static int sp5100_tco_setupdevice(struct device *dev, /* Setup the watchdog timer */ tco_timer_enable(); - /* Check that the watchdog action is set to reset the system */ val = readl(SP5100_WDT_CONTROL(tco->tcobase)); + if (val & SP5100_WDT_DISABLED) { + dev_err(dev, "Watchdog hardware is disabled\n"); + ret = -ENODEV; + goto unreg_region; + } + /* * Save WatchDogFired status, because WatchDogFired flag is * cleared here. */ if (val & SP5100_WDT_FIRED) wdd->bootstatus = WDIOF_CARDRESET; + /* Set watchdog action to reset the system */ val &= ~SP5100_WDT_ACTION_RESET; writel(val, SP5100_WDT_CONTROL(tco->tcobase)); |