wdog: fix timer IRQ busy when timer list empty

GUIDINGLI · xiaoxiang781216 · commit b010356b2699 · 2024-09-10T23:32:30.000+08:00
when timer list empty, should return 0 to indicate
we are no longer set time

Signed-off-by: ligd &lt;liguiding1@xiaomi.com&gt;
diff --git a/sched/sched/sched_timerexpiration.c b/sched/sched/sched_timerexpiration.c
@@ -362,7 +362,7 @@ static clock_t nxsched_timer_process(clock_t ticks, clock_t elapsed,
   tmp = nxsched_process_scheduler(ticks, elapsed, noswitches);
 
 #if CONFIG_RR_INTERVAL > 0 || defined(CONFIG_SCHED_SPORADIC)
-  if (tmp > 0 && tmp < rettime)
+  if (tmp > 0 && (rettime == 0 || tmp < rettime))
     {
       rettime = tmp;
     }
diff --git a/sched/wdog/wd_start.c b/sched/wdog/wd_start.c
@@ -402,7 +402,7 @@ clock_t wd_timer(clock_t ticks, bool noswitches)
   if (list_is_empty(&g_wdactivelist))
     {
       leave_critical_section(flags);
-      return CLOCK_MAX;
+      return 0;
     }
 
   /* Notice that if noswitches, expired - g_wdtickbase

Original file line number	Diff line number	Diff line change
`@@ -362,7 +362,7 @@ static clock_t nxsched_timer_process(clock_t ticks, clock_t elapsed,`
`362`	`362`	`tmp = nxsched_process_scheduler(ticks, elapsed, noswitches);`
`363`	`363`
`364`	`364`	`#if CONFIG_RR_INTERVAL > 0 \|\| defined(CONFIG_SCHED_SPORADIC)`
`365`		`- if (tmp > 0 && tmp < rettime)`
	`365`	`+ if (tmp > 0 && (rettime == 0 \|\| tmp < rettime))`
`366`	`366`	`{`
`367`	`367`	`rettime = tmp;`
`368`	`368`	`}`
Original file line number	Diff line number	Diff line change
`@@ -402,7 +402,7 @@ clock_t wd_timer(clock_t ticks, bool noswitches)`
`402`	`402`	`if (list_is_empty(&g_wdactivelist))`
`403`	`403`	`{`
`404`	`404`	`leave_critical_section(flags);`
`405`		`- return CLOCK_MAX;`
	`405`	`+ return 0;`
`406`	`406`	`}`
`407`	`407`
`408`	`408`	`/* Notice that if noswitches, expired - g_wdtickbase`