From 50beba07a0e42ebd4454adc97515a2a2a969645b Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Tue, 20 Feb 2018 20:05:04 +0200 Subject: ACPI, x86/boot: Split out acpi_generic_reduce_hw_init() and export This is a preparation patch to allow override the hardware reduced initialization on ACPI enabled platforms. No functional change intended. Signed-off-by: Andy Shevchenko Reviewed-by: Rafael J. Wysocki Cc: Eric Biederman Cc: Juergen Gross Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Rafael J . Wysocki Cc: Thomas Gleixner Cc: linux-acpi@vger.kernel.org Link: http://lkml.kernel.org/r/20180220180506.65523-1-andriy.shevchenko@linux.intel.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/acpi/boot.c | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-) (limited to 'arch/x86/kernel/acpi') diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 2aa92094b59d..baa084ecffdb 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -1376,17 +1376,21 @@ static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d) * * We initialize the Hardware-reduced ACPI model here: */ +void __init acpi_generic_reduced_hw_init(void) +{ + /* + * Override x86_init functions and bypass legacy PIC in + * hardware reduced ACPI mode. + */ + x86_init.timers.timer_init = x86_init_noop; + x86_init.irqs.pre_vector_init = x86_init_noop; + legacy_pic = &null_legacy_pic; +} + static void __init acpi_reduced_hw_init(void) { - if (acpi_gbl_reduced_hardware) { - /* - * Override x86_init functions and bypass legacy pic - * in Hardware-reduced ACPI mode - */ - x86_init.timers.timer_init = x86_init_noop; - x86_init.irqs.pre_vector_init = x86_init_noop; - legacy_pic = &null_legacy_pic; - } + if (acpi_gbl_reduced_hardware) + acpi_generic_reduced_hw_init(); } /* -- cgit v1.2.3