watchdog: hpwdt (7/12): allow full range of timer values supported by hardware (6f681c2e) · Commits · 戴 / test

The hpwdt timer is a 16 bit value with 128ms resolution. Let applications use this entire range. Signed-off-by:

drivers/watchdog/hpwdt.c

+3 −2

Original line number	Diff line number	Diff line
		@@ -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);