--- zzzz-none-000/linux-5.4.213/drivers/mtd/parsers/parser_trx.c	2022-09-15 10:04:56.000000000 +0000
+++ alder-5690pro-762/linux-5.4.213/drivers/mtd/parsers/parser_trx.c	2024-08-14 09:02:07.000000000 +0000
@@ -25,6 +25,33 @@
 	uint32_t offset[3];
 } __packed;
 
+/*
+ * Calculate real end offset (address) for a given amount of data. It checks
+ * all blocks skipping bad ones.
+ */
+static size_t parser_trx_real_offset(struct mtd_info *mtd, size_t bytes)
+{
+	size_t real_offset = 0;
+
+	if (mtd_block_isbad(mtd, real_offset))
+		pr_warn("Base offset shouldn't be at bad block");
+
+	while (bytes >= mtd->erasesize) {
+		bytes -= mtd->erasesize;
+		real_offset += mtd->erasesize;
+		while (mtd_block_isbad(mtd, real_offset)) {
+			real_offset += mtd->erasesize;
+
+			if (real_offset >= mtd->size)
+				return real_offset - mtd->erasesize;
+		}
+	}
+
+	real_offset += bytes;
+
+	return real_offset;
+}
+
 static const char *parser_trx_data_part_name(struct mtd_info *master,
 					     size_t offset)
 {
@@ -79,21 +106,21 @@
 	if (trx.offset[2]) {
 		part = &parts[curr_part++];
 		part->name = "loader";
-		part->offset = trx.offset[i];
+		part->offset = parser_trx_real_offset(mtd, trx.offset[i]);
 		i++;
 	}
 
 	if (trx.offset[i]) {
 		part = &parts[curr_part++];
 		part->name = "linux";
-		part->offset = trx.offset[i];
+		part->offset = parser_trx_real_offset(mtd, trx.offset[i]);
 		i++;
 	}
 
 	if (trx.offset[i]) {
 		part = &parts[curr_part++];
-		part->name = parser_trx_data_part_name(mtd, trx.offset[i]);
-		part->offset = trx.offset[i];
+		part->offset = parser_trx_real_offset(mtd, trx.offset[i]);
+		part->name = parser_trx_data_part_name(mtd, part->offset);
 		i++;
 	}