[PULL,v4,49/83] acpi: add get_dev_aml_func() helper

Commit Message

Michael S. Tsirkin Nov. 7, 2022, 10:51 p.m. UTC

From: Igor Mammedov <[e-mail]>

It will be used in followup commits to figure out if
device has it's own, device specific AML block.

Signed-off-by: Igor Mammedov <[e-mail]>
Message-Id: <[e-mail]>
Reviewed-by: Michael S. Tsirkin <[e-mail]>
Signed-off-by: Michael S. Tsirkin <[e-mail]>
Reviewed-by: Ani Sinha <[e-mail]>
---
 include/hw/acpi/acpi_aml_interface.h | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

Patch

diff --git a/include/hw/acpi/acpi_aml_interface.h b/include/hw/acpi/acpi_aml_interface.h
index ab76f0e55d..436da069d6 100644
--- a/include/hw/acpi/acpi_aml_interface.h
+++ b/include/hw/acpi/acpi_aml_interface.h
@@ -29,11 +29,20 @@  struct AcpiDevAmlIfClass {
     dev_aml_fn build_dev_aml;
 };
 
-static inline void call_dev_aml_func(DeviceState *dev, Aml *scope)
+static inline dev_aml_fn get_dev_aml_func(DeviceState *dev)
 {
     if (object_dynamic_cast(OBJECT(dev), TYPE_ACPI_DEV_AML_IF)) {
         AcpiDevAmlIfClass *klass = ACPI_DEV_AML_IF_GET_CLASS(dev);
-        klass->build_dev_aml(ACPI_DEV_AML_IF(dev), scope);
+        return klass->build_dev_aml;
+    }
+    return NULL;
+}
+
+static inline void call_dev_aml_func(DeviceState *dev, Aml *scope)
+{
+    dev_aml_fn fn = get_dev_aml_func(dev);
+    if (fn) {
+        fn(ACPI_DEV_AML_IF(dev), scope);
     }
 }