drivers/timers: remove nxsig_notification when signal support is disabled

When all signals are disabled, nxsig_notification is not available and
 should not be invoked. Remove the call to avoid build and runtime issues
 in no-signal configurations.

Signed-off-by: Chengdong Wang <wangchengdong@lixiang.com>

drivers/timers/Kconfig

@@ -97,6 +97,7 @@ if CAPTURE
 config CAPTURE_NOTIFY
 	bool "Capture Notification Support"
 	default n
+	depends on !DISABLE_ALL_SIGNALS
 	---help---
 		Some hardware will support notification when a capture event
 		occurs.  If the hardware will support notification, then this
@@ -239,6 +240,7 @@ endif # !RTC_DATETIME
 config RTC_ALARM
 	bool "RTC Alarm Support"
 	default n
+	depends on !DISABLE_ALL_SIGNALS
 	---help---
 		Enable if the RTC hardware supports setting of an alarm.  A callback
 		function will be executed when the alarm goes off.
@@ -269,6 +271,7 @@ config RTC_ARCH
 config RTC_PERIODIC
 	bool "RTC Periodic Interrupts"
 	default n
+	depends on !DISABLE_ALL_SIGNALS
 	---help---
 		Add interrupt controls for RTCs that support periodic interrupts.
 

drivers/timers/oneshot.c

@@ -54,9 +54,11 @@ struct oneshot_dev_s
 
   /* Oneshot timer expiration notification information */
 
+#ifndef CONFIG_DISABLE_ALL_SIGNALS
   struct sigevent od_event;                    /* Signal info */
   struct sigwork_s od_work;                    /* Signal work */
   pid_t od_pid;                                /* PID to be notified */
+#endif
 };
 
 /****************************************************************************
@@ -70,8 +72,10 @@ static ssize_t oneshot_write(FAR struct file *filep, FAR const char *buffer,
 static int     oneshot_ioctl(FAR struct file *filep, int cmd,
                  unsigned long arg);
 
+#ifndef CONFIG_DISABLE_ALL_SIGNALS
 static void    oneshot_callback(FAR struct oneshot_lowerhalf_s *lower,
                  FAR void *arg);
+#endif
 
 /****************************************************************************
  * Private Data
@@ -95,6 +99,7 @@ static const struct file_operations g_oneshot_ops =
  * Name: oneshot_callback
  ****************************************************************************/
 
+#ifndef CONFIG_DISABLE_ALL_SIGNALS
 static void oneshot_callback(FAR struct oneshot_lowerhalf_s *lower,
                              FAR void *arg)
 {
@@ -107,6 +112,7 @@ static void oneshot_callback(FAR struct oneshot_lowerhalf_s *lower,
   nxsig_notification(priv->od_pid, &priv->od_event, SI_QUEUE,
                      &priv->od_work);
 }
+#endif
 
 /****************************************************************************
  * Name: oneshot_read
@@ -193,6 +199,7 @@ static int oneshot_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
        *               Argument: A reference to struct oneshot_start_s
        */
 
+#ifndef CONFIG_DISABLE_ALL_SIGNALS
       case OSIOC_START:
         {
           FAR struct oneshot_start_s *start;
@@ -234,6 +241,7 @@ static int oneshot_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
           nxsig_cancel_notification(&priv->od_work);
         }
         break;
+#endif
 
       /* OSIOC_CURRENT - Get the current time
        *                 Argument: A reference to a struct timespec in
@@ -311,8 +319,10 @@ int oneshot_register(FAR const char *devname,
 
   priv->od_lower = lower;
 
+#ifndef CONFIG_DISABLE_ALL_SIGNALS
   lower->callback = oneshot_callback;
   lower->arg      = priv;
+#endif
 
   nxmutex_init(&priv->od_lock);
 

drivers/timers/timer.c

@@ -61,8 +61,10 @@ struct timer_upperhalf_s
 
   /* The contained signal info */
 
+#ifndef CONFIG_DISABLE_ALL_SIGNALS
   struct timer_notify_s notify;
   struct sigwork_s work;
+#endif
 
   /* The contained lower-half driver */
 
@@ -116,6 +118,7 @@ static const struct file_operations g_timerops =
  *
  ****************************************************************************/
 
+#ifndef CONFIG_DISABLE_ALL_SIGNALS
 static bool timer_notifier(FAR uint32_t *next_interval_us, FAR void *arg)
 {
   FAR struct timer_upperhalf_s *upper = (FAR struct timer_upperhalf_s *)arg;
@@ -131,6 +134,7 @@ static bool timer_notifier(FAR uint32_t *next_interval_us, FAR void *arg)
 
   return notify->periodic;
 }
+#endif
 
 /****************************************************************************
  * Name: timer_open
@@ -381,6 +385,7 @@ static int timer_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
      * Argument:    signal information
      */
 
+#ifndef CONFIG_DISABLE_ALL_SIGNALS
     case TCIOC_NOTIFICATION:
       {
         FAR struct timer_notify_s *notify =
@@ -398,6 +403,7 @@ static int timer_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
           }
       }
       break;
+#endif
 
     /* cmd:         TCIOC_MAXTIMEOUT
      * Description: Get the maximum supported timeout value