watchdog: Fix reboot on W83627ehf chipset.
The watchdog driver for the SUPERIO chip winbond w83627ehf does not work.
If you open /dev/watchdog and write a character to /dev/watchdog then
the watchdog will be triggered. However the watchdog will not trigger
the hardware RESET after the timeout, because the watchdog has never been
enabled.
Signed-off-by: Herman Morsink Vollenbroek <h.morsinkvollenbroek@home.nl>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
diff --git a/drivers/watchdog/w83627hf_wdt.c b/drivers/watchdog/w83627hf_wdt.c
index 48f2e01..e5c91d4 100644
--- a/drivers/watchdog/w83627hf_wdt.c
+++ b/drivers/watchdog/w83627hf_wdt.c
@@ -129,6 +129,8 @@
t = inb_p(WDT_EFDR); /* read CRF5 */
t &= ~0x0C; /* set second mode & disable keyboard
turning off watchdog */
+ t |= 0x02; /* enable the WDTO# output low pulse
+ to the KBRST# pin (PIN60) */
outb_p(t, WDT_EFDR); /* Write back to CRF5 */
outb_p(0xF7, WDT_EFER); /* Select CRF7 */