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diff --git a/sys/compat/linuxkpi/common/include/acpi/acpi_bus.h b/sys/compat/linuxkpi/common/include/acpi/acpi_bus.h
--- a/sys/compat/linuxkpi/common/include/acpi/acpi_bus.h
+++ b/sys/compat/linuxkpi/common/include/acpi/acpi_bus.h
@@ -58,4 +58,10 @@
struct acpi_device *lkpi_acpi_dev_get_first_match_dev(const char *hid,
const char *uid, int64_t hrv);
+union linuxkpi_acpi_object;
+
+union linuxkpi_acpi_object *
+acpi_evaluate_dsm(ACPI_HANDLE ObjHandle, const guid_t *guid,
+ UINT64 rev, UINT64 func, union linuxkpi_acpi_object *arg);
+
#endif /* _LINUXKPI_ACPI_ACPI_BUS_H_ */
diff --git a/sys/compat/linuxkpi/common/src/linux_acpi.c b/sys/compat/linuxkpi/common/src/linux_acpi.c
--- a/sys/compat/linuxkpi/common/src/linux_acpi.c
+++ b/sys/compat/linuxkpi/common/src/linux_acpi.c
@@ -39,6 +39,7 @@
#include <linux/notifier.h>
#include <linux/suspend.h>
+#include <linux/uuid.h>
#include <acpi/acpi_bus.h>
#include <acpi/video.h>
@@ -99,6 +100,17 @@
argv4, &buf, type)) ? (ACPI_OBJECT *)buf.Pointer : NULL);
}
+union linuxkpi_acpi_object *
+acpi_evaluate_dsm(ACPI_HANDLE ObjHandle, const guid_t *guid,
+ UINT64 rev, UINT64 func, union linuxkpi_acpi_object *pkg)
+{
+ ACPI_BUFFER buf;
+
+ return (ACPI_SUCCESS(acpi_EvaluateDSM(ObjHandle, (const uint8_t *)guid,
+ rev, func, (ACPI_OBJECT *)pkg, &buf)) ?
+ (union linuxkpi_acpi_object *)buf.Pointer : NULL);
+}
+
static void
linux_handle_power_suspend_event(void *arg __unused)
{
@@ -323,6 +335,13 @@
return (NULL);
}
+union linuxkpi_acpi_object *
+acpi_evaluate_dsm(ACPI_HANDLE ObjHandle, const guid_t *guid,
+ UINT64 rev, UINT64 func, union linuxkpi_acpi_object *pkg)
+{
+ return (NULL);
+}
+
int
register_acpi_notifier(struct notifier_block *nb)
{

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