From: Paul Mundt <lethal@linux-sh.org>
Date: Wed, 29 Jul 2009 13:43:58 +0000 (+0900)
Subject: Revert "sh: Bump the earlytimer bits back to time_init()."
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=82b242214b6f5b96eb9b76452ac6e2b67dd81abd;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

Revert "sh: Bump the earlytimer bits back to time_init()."

This reverts commit 1d29ebebcb951ab6b04d22807cafb24b893310a2.

Bumping up the earlytimer initialization causes IRQs to be enabled too
early, which blows up lockdep:

...
NR_IRQS:256 nr_irqs:256
------------[ cut here ]------------
Badness at kernel/lockdep.c:2128

Pid : 0, Comm:          swapper
CPU : 0                 Not tainted  (2.6.31-rc3-00205-g3ed6e12-dirty #2443)

PC is at trace_hardirqs_on_caller+0x48/0x10c
PR is at trace_hardirqs_on_caller+0x3c/0x10c
...

Revert it back to late_time_init time, which fixes up lockdep.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
---

diff --git a/arch/sh/kernel/time.c b/arch/sh/kernel/time.c
index d2424b068b7..7f95f479060 100644
--- a/arch/sh/kernel/time.c
+++ b/arch/sh/kernel/time.c
@@ -92,6 +92,21 @@ module_init(rtc_generic_init);
 
 void (*board_time_init)(void);
 
+static void __init sh_late_time_init(void)
+{
+	/*
+	 * Make sure all compiled-in early timers register themselves.
+	 *
+	 * Run probe() for two "earlytimer" devices, these will be the
+	 * clockevents and clocksource devices respectively. In the event
+	 * that only a clockevents device is available, we -ENODEV on the
+	 * clocksource and the jiffies clocksource is used transparently
+	 * instead. No error handling is necessary here.
+	 */
+	early_platform_driver_register_all("earlytimer");
+	early_platform_driver_probe("earlytimer", 2, 0);
+}
+
 void __init time_init(void)
 {
 	if (board_time_init)
@@ -108,15 +123,5 @@ void __init time_init(void)
 	local_timer_setup(smp_processor_id());
 #endif
 
-	/*
-	 * Make sure all compiled-in early timers register themselves.
-	 *
-	 * Run probe() for two "earlytimer" devices, these will be the
-	 * clockevents and clocksource devices respectively. In the event
-	 * that only a clockevents device is available, we -ENODEV on the
-	 * clocksource and the jiffies clocksource is used transparently
-	 * instead. No error handling is necessary here.
-	 */
-	early_platform_driver_register_all("earlytimer");
-	early_platform_driver_probe("earlytimer", 2, 0);
+	late_time_init = sh_late_time_init;
 }