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-rw-r--r--include/acpi/acpiosxf.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/acpi/acpiosxf.h b/include/acpi/acpiosxf.h
index a756bc8..4543b6f 100644
--- a/include/acpi/acpiosxf.h
+++ b/include/acpi/acpiosxf.h
@@ -98,8 +98,11 @@ acpi_os_table_override(struct acpi_table_header *existing_table,
/*
* Spinlock primitives
*/
+
+#ifndef acpi_os_create_lock
acpi_status
acpi_os_create_lock(acpi_spinlock *out_handle);
+#endif
void acpi_os_delete_lock(acpi_spinlock handle);
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