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From: dann frazier on 2 Jun 2010 18:30
The hpwdt timer is a 16 bit value with 128ms resolution.
Let applications use this entire range.

Signed-off-by: dann frazier <dannf(a)hp.com>
---
drivers/watchdog/hpwdt.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c
index af61fb6..e3bf645 100644
--- a/drivers/watchdog/hpwdt.c
+++ b/drivers/watchdog/hpwdt.c
@@ -50,6 +50,8 @@
#define HPWDT_VERSION "1.1.1"

#define SECS_TO_TICKS(secs) ((secs) * 1000 / 128)
+#define TICKS_TO_SECS(ticks) ((ticks) * 128 / 1000)
+#define HPWDT_MAX_TIMER TICKS_TO_SECS(65535)

struct bios32_service_dir {
u32 signature;
@@ -443,8 +445,7 @@ static void hpwdt_ping(void)

static int hpwdt_change_timer(int new_margin)
{
- /* Arbitrary, can't find the card's limits */
- if (new_margin < 5 || new_margin > 600) {
+ if (new_margin < 1 || new_margin > HPWDT_MAX_TIMER) {
printk(KERN_WARNING
"hpwdt: New value passed in is invalid: %d seconds.\n",
new_margin);
--
1.7.1

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