[tip:x86/mm] x86/platform/intel-mid: Add special handling for ACPI HW reduced platforms

[tip-bot for Andy Shevchenko]

Commit-ID:  02428742639bc3300c8c527b054d0ec0bdf5571d
Gitweb:     https://git.kernel.org/tip/02428742639bc3300c8c527b054d0ec0bdf5571d
Author:     Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
AuthorDate: Tue, 20 Feb 2018 20:05:06 +0200
Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Mon, 12 Mar 2018 12:32:57 +0100

x86/platform/intel-mid: Add special handling for ACPI HW reduced platforms

When switching to ACPI HW reduced platforms we still want to initialize timers.
Override x86_init.acpi.reduced_hw_init to achieve that.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Cc: Eric Biederman <ebiederm@xxxxxxxxxxxx>
Cc: Juergen Gross <jgross@xxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Rafael J . Wysocki <rafael.j.wysocki@xxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: linux-acpi@xxxxxxxxxxxxxxx
Link: http://lkml.kernel.org/r/20180220180506.65523-3-andriy.shevchenko@xxxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 arch/x86/platform/intel-mid/intel-mid.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/x86/platform/intel-mid/intel-mid.c b/arch/x86/platform/intel-mid/intel-mid.c
index 2c67bae6bb53..c556f1e8936e 100644
--- a/arch/x86/platform/intel-mid/intel-mid.c
+++ b/arch/x86/platform/intel-mid/intel-mid.c
@@ -199,6 +199,12 @@ void __init x86_intel_mid_early_setup(void)
 
 	legacy_pic = &null_legacy_pic;
 
+	/*
+	 * Do nothing for now as everything needed done in
+	 * x86_intel_mid_early_setup() below.
+	 */
+	x86_init.acpi.reduced_hw_early_init = x86_init_noop;
+
 	pm_power_off = intel_mid_power_off;
 	machine_ops.emergency_restart  = intel_mid_reboot;