diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 5a2faa8927485d6f30e292539ba7dd44f74f9f95..3e1ecca724305466b0d846ccba3d8b02a9b43c07 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -147,6 +147,14 @@ MODULE_FIRMWARE(FIRMWARE_NAVI12_DMCU);
 /* Number of bytes in PSP footer for firmware. */
 #define PSP_FOOTER_BYTES 0x100
 
+/*
+ * DMUB Async to Sync Mechanism Status
+ */
+#define DMUB_ASYNC_TO_SYNC_ACCESS_FAIL 1
+#define DMUB_ASYNC_TO_SYNC_ACCESS_TIMEOUT 2
+#define DMUB_ASYNC_TO_SYNC_ACCESS_SUCCESS 3
+#define DMUB_ASYNC_TO_SYNC_ACCESS_INVALID 4
+
 /**
  * DOC: overview
  *
@@ -10109,6 +10117,8 @@ static int amdgpu_dm_set_dmub_async_sync_status(bool is_cmd_aux,
 			*operation_result = AUX_RET_ERROR_TIMEOUT;
 		} else if (status_type == DMUB_ASYNC_TO_SYNC_ACCESS_FAIL) {
 			*operation_result = AUX_RET_ERROR_ENGINE_ACQUIRE;
+		} else if (status_type == DMUB_ASYNC_TO_SYNC_ACCESS_INVALID) {
+			*operation_result = AUX_RET_ERROR_INVALID_REPLY;
 		} else {
 			*operation_result = AUX_RET_ERROR_UNKNOWN;
 		}
@@ -10156,6 +10166,16 @@ int amdgpu_dm_process_dmub_aux_transfer_sync(bool is_cmd_aux, struct dc_context
 			payload->reply[0] = adev->dm.dmub_notify->aux_reply.command;
 			if (!payload->write && adev->dm.dmub_notify->aux_reply.length &&
 			    payload->reply[0] == AUX_TRANSACTION_REPLY_AUX_ACK) {
+
+				if (payload->length != adev->dm.dmub_notify->aux_reply.length) {
+					DRM_WARN("invalid read from DPIA AUX %x(%d) got length %d!\n",
+							payload->address, payload->length,
+							adev->dm.dmub_notify->aux_reply.length);
+					return amdgpu_dm_set_dmub_async_sync_status(is_cmd_aux, ctx,
+							DMUB_ASYNC_TO_SYNC_ACCESS_INVALID,
+							(uint32_t *)operation_result);
+				}
+
 				memcpy(payload->data, adev->dm.dmub_notify->aux_reply.data,
 				       adev->dm.dmub_notify->aux_reply.length);
 			}
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
index b5ce15c43bcc1667ea79fbc8da5247f364738280..635c398fcefe7bb1a70858dcfe5b805fc19a47f0 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
@@ -50,12 +50,6 @@
 
 #define AMDGPU_DMUB_NOTIFICATION_MAX 5
 
-/*
- * DMUB Async to Sync Mechanism Status
- */
-#define DMUB_ASYNC_TO_SYNC_ACCESS_FAIL 1
-#define DMUB_ASYNC_TO_SYNC_ACCESS_TIMEOUT 2
-#define DMUB_ASYNC_TO_SYNC_ACCESS_SUCCESS 3
 /*
 #include "include/amdgpu_dal_power_if.h"
 #include "amdgpu_dm_irq.h"