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authorSean Christopherson <sean.j.christopherson@intel.com>2019-11-26 08:54:16 -0800
committerIngo Molnar <mingo@kernel.org>2019-12-10 10:15:48 +0100
commit8c53b318b222eff55d2900b554094a099b1a30f6 (patch)
treeeeee7f57178086e00a21befe9bd4c577230218dc /drivers/acpi/sleep.c
parentcb28909525acdd1a89c5b2de761eaf2f788c0057 (diff)
ACPI/sleep: Convert acpi_wakeup_address into a function
Convert acpi_wakeup_address from a raw variable into a function so that x86 can wrap its dereference of the real mode boot header in a function instead of broadcasting it to the world via a #define. This sets the stage for a future patch to move x86's definition of the new function, acpi_get_wakeup_address(), out of asm/acpi.h and thus break acpi.h's dependency on asm/realmode.h. No functional change intended. Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> Link: https://lkml.kernel.org/r/20191126165417.22423-12-sean.j.christopherson@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/acpi/sleep.c')
-rw-r--r--drivers/acpi/sleep.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 6747a279621b..439880629839 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -61,8 +61,11 @@ static struct notifier_block tts_notifier = {
static int acpi_sleep_prepare(u32 acpi_state)
{
#ifdef CONFIG_ACPI_SLEEP
+ unsigned long acpi_wakeup_address;
+
/* do we have a wakeup address for S2 and S3? */
if (acpi_state == ACPI_STATE_S3) {
+ acpi_wakeup_address = acpi_get_wakeup_address();
if (!acpi_wakeup_address)
return -EFAULT;
acpi_set_waking_vector(acpi_wakeup_address);