watchdog: hpwdt (8/12): implement WDIOC_GETTIMELEFT (aae67f36) · Commits · 戴 / test

Let applications check the amount of time left before the watchdog will fire. Signed-off-by:

drivers/watchdog/hpwdt.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -450,6 +450,11 @@ static int hpwdt_change_timer(int new_margin)
		return 0;
		}

		static int hpwdt_time_left(void)
		{
		return TICKS_TO_SECS(ioread16(hpwdt_timer_reg));
		}

		/*
		* NMI Handler
		*/
		@@ -591,6 +596,10 @@ static long hpwdt_ioctl(struct file *file, unsigned int cmd,
		case WDIOC_GETTIMEOUT:
		ret = put_user(soft_margin, p);
		break;

		case WDIOC_GETTIMELEFT:
		ret = put_user(hpwdt_time_left(), p);
		break;
		}
		return ret;
		}