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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2018-02-20 20:05:04 +0200
committerIngo Molnar <mingo@kernel.org>2018-03-12 12:32:57 +0100
commit50beba07a0e42ebd4454adc97515a2a2a969645b (patch)
treeacedb714315d2c8cb6b9c68f61320f8ac90de63d /arch/x86/kernel/acpi
parent24c517856af6511be1339dd55edd131160e37aac (diff)
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 <andriy.shevchenko@linux.intel.com> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Juergen Gross <jgross@suse.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rafael J . Wysocki <rafael.j.wysocki@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> 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 <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/acpi')
-rw-r--r--arch/x86/kernel/acpi/boot.c22
1 files changed, 13 insertions, 9 deletions
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();
}
/*