--- zzzz-none-000/linux-2.6.39.4/drivers/mtd/mtdpart.c	2011-08-03 19:43:28.000000000 +0000
+++ puma6-arm-6490-729/linux-2.6.39.4/drivers/mtd/mtdpart.c	2021-11-10 13:23:10.000000000 +0000
@@ -754,3 +754,19 @@
 	return ispart;
 }
 EXPORT_SYMBOL_GPL(mtd_is_partition);
+
+// AVM/TKL: needed for setting up panic mode
+#define IS_PART(mtd) (mtd->read == part_read)
+struct mtd_info *get_mtd_part_master(struct mtd_info *mtd)
+{
+    struct mtd_info *master = NULL;
+    struct mtd_part *part;
+
+    if(IS_PART(mtd)){
+        part = PART(mtd);
+        master = part->master;
+    }
+
+    return master;
+}
+EXPORT_SYMBOL(get_mtd_part_master);