tree 11b4a099cf920a8d5ef639a4b8a6a3b23f6a15c9
parent 94f1e9f316b10972b77a64344006c3bf8a4929b4
author [EMAIL PROTECTED] Brady <[EMAIL PROTECTED]> Wed, 17 Aug 2005 09:06:07 
committer Wim Van Sebroeck <[EMAIL PROTECTED]> Sat, 03 Sep 2005 13:58:03 +0200

[WATCHDOG] w83627hf_wdt.c-initialized_bios_bug

Attached is a small update to the w83627hf watchdog driver
to initialise appropriately if it was already initialised
in the BIOS. On tyan motherboards for e.g. you can init
the watchdog to 4 mins, then when the driver is loaded it
sets the watchdog to "seconds" mode, and then machine will
reboot within 4 seconds. So this patch resets the timeout
to the configured value if the watchdog is already running.

Signed-off-by: Wim Van Sebroeck <[EMAIL PROTECTED]>

 drivers/char/watchdog/w83627hf_wdt.c |    6 ++++++
 1 files changed, 6 insertions(+)

diff --git a/drivers/char/watchdog/w83627hf_wdt.c 
--- a/drivers/char/watchdog/w83627hf_wdt.c
+++ b/drivers/char/watchdog/w83627hf_wdt.c
@@ -93,6 +93,12 @@ w83627hf_init(void)
+       outb_p(0xF6, WDT_EFER); /* Select CRF6 */
+       t=inb_p(WDT_EFDR);      /* read CRF6 */
+       if (t != 0) {
+               printk (KERN_INFO PFX "Watchdog already running. Resetting 
timeout to %d sec\n", timeout);
+               outb_p(timeout, WDT_EFDR);    /* Write back to CRF6 */
+       }
        outb_p(0xF5, WDT_EFER); /* Select CRF5 */
        t=inb_p(WDT_EFDR);      /* read CRF5 */
        t&=~0x0C;               /* set second mode & disable keyboard turning 
off watchdog */
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