--- zzzz-none-000/linux-5.15.111/drivers/acpi/acpica/nsxfobj.c	2023-05-11 14:00:40.000000000 +0000
+++ puma7-atom-6670-761/linux-5.15.111/drivers/acpi/acpica/nsxfobj.c	2024-02-07 10:22:36.000000000 +0000
@@ -11,10 +11,64 @@
 #include <acpi/acpi.h>
 #include "accommon.h"
 #include "acnamesp.h"
+#include "amlcode.h"
 
 #define _COMPONENT          ACPI_NAMESPACE
 ACPI_MODULE_NAME("nsxfobj")
 
+/*
+ * This table maps the various Attrib protocols to the byte transfer
+ * length. Used for the generic serial bus.
+ */
+#define ACPI_INVALID_PROTOCOL_ID        0x80
+#define ACPI_MAX_PROTOCOL_ID            0x0F
+const u8 acpi_protocol_lengths[] = {
+	ACPI_INVALID_PROTOCOL_ID,	/* 0 - reserved */
+	ACPI_INVALID_PROTOCOL_ID,	/* 1 - reserved */
+	0x00,			/* 2 - ATTRIB_QUICK */
+	ACPI_INVALID_PROTOCOL_ID,	/* 3 - reserved */
+	0x01,			/* 4 - ATTRIB_SEND_RECEIVE */
+	ACPI_INVALID_PROTOCOL_ID,	/* 5 - reserved */
+	0x01,			/* 6 - ATTRIB_BYTE */
+	ACPI_INVALID_PROTOCOL_ID,	/* 7 - reserved */
+	0x02,			/* 8 - ATTRIB_WORD */
+	ACPI_INVALID_PROTOCOL_ID,	/* 9 - reserved */
+	0xFF,			/* A - ATTRIB_BLOCK  */
+	0xFF,			/* B - ATTRIB_BYTES */
+	0x02,			/* C - ATTRIB_PROCESS_CALL */
+	0xFF,			/* D - ATTRIB_BLOCK_PROCESS_CALL */
+	0xFF,			/* E - ATTRIB_RAW_BYTES */
+	0xFF			/* F - ATTRIB_RAW_PROCESS_BYTES */
+};
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_get_serial_access_length
+ *
+ * PARAMETERS:  accessor_type   - The type of the protocol indicated by region
+ *                                field access attributes
+ *              access_length   - The access length of the region field
+ *
+ * RETURN:      Decoded access length
+ *
+ * DESCRIPTION: This routine returns the length of the generic_serial_bus
+ *              protocol bytes
+ *
+ ******************************************************************************/
+u32 acpi_get_serial_access_length(u32 accessor_type, u32 access_length)
+{
+    if ((accessor_type > ACPI_MAX_PROTOCOL_ID) ||
+        (acpi_protocol_lengths[accessor_type] == ACPI_INVALID_PROTOCOL_ID))
+    {
+        ACPI_ERROR((AE_INFO, "Invalid Field/AccessAs protocol ID: 0x%4.4X",
+                    accessor_type));
+        return (ACPI_MAX_GSBUS_BUFFER_SIZE);
+    }
+
+    return (acpi_protocol_lengths[accessor_type]);
+}
+ACPI_EXPORT_SYMBOL(acpi_get_serial_access_length);
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_get_type