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watchdog: hpwdt (7/12): allow full range of timer values supported by hardware

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The hpwdt timer is a 16 bit value with 128ms resolution.
Let applications use this entire range.

Signed-off-by: dann frazier <[email protected]>
Acked-by: Thomas Mingarelli <[email protected]>
Signed-off-by: Wim Van Sebroeck <[email protected]>
This commit is contained in:
dann frazier 2010-06-02 16:23:40 -06:00 • committed by Wim Van Sebroeck
commit 6f681c2eab
1 changed files with 3 additions and 2 deletions
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5
drivers/watchdog/hpwdt.c
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@ -36,6 +36,8 @@
#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)
#define DEFAULT_MARGIN 30
static unsigned int soft_margin = DEFAULT_MARGIN; /* in seconds */
@ -432,8 +434,7 @@ 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);