From ed9487b45200541cf9614fd96c9ea9d925cdc6fb Mon Sep 17 00:00:00 2001
From: Norman Feske <norman.feske@genode-labs.com>
Date: Tue, 6 Apr 2021 14:26:10 +0200
Subject: [PATCH] rtc_drv: defer init until first use

This patch avoids the RTC driver's aggressive polling during the
(CPU-bounded) boot of Sculpt OS. As the RTC is not needed during bootup,
this patch reduces the boot time (on Qemu) by 2-4 seconds.

Fixes #4065
---
 repos/os/src/drivers/rtc/main.cc | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/repos/os/src/drivers/rtc/main.cc b/repos/os/src/drivers/rtc/main.cc
index 3ec7897722..f296424a51 100644
--- a/repos/os/src/drivers/rtc/main.cc
+++ b/repos/os/src/drivers/rtc/main.cc
@@ -83,10 +83,7 @@ class Rtc::Root : public Genode::Root_component<Session_component>
 		:
 			Genode::Root_component<Session_component>(&env.ep().rpc_ep(), &md_alloc),
 			_env(env)
-		{
-			/* trigger initial RTC read */
-			Rtc::get_time(_env);
-		}
+		{ }
 
 		void notify_clients()
 		{