Commit ac461103 authored by Guenter Roeck's avatar Guenter Roeck Committed by Wim Van Sebroeck

watchdog: w83627hf: Enable watchdog device only if not already enabled

There is no need to enable the watchdog device if it is already enabled.
Also, when enabling the watchdog device, only set the watchdog device
enable bit and do not touch other bits; depending on the chip type,
those bits may enable other functionality.
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarWim Van Sebroeck <wim@iguana.be>
parent 8f526389
......@@ -107,7 +107,9 @@ static void w83627hf_init(struct watchdog_device *wdog)
}
outb_p(0x30, WDT_EFER); /* select CR30 */
outb_p(0x01, WDT_EFDR); /* set bit 0 to activate GPIO2 */
t = inb(WDT_EFDR);
if (!(t & 0x01))
outb_p(t | 0x01, WDT_EFDR); /* set bit 0 to activate GPIO2 */
outb_p(0xF6, WDT_EFER); /* Select CRF6 */
t = inb_p(WDT_EFDR); /* read CRF6 */
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment