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path: root/package/libnl-tiny/src/include/linux

	Commit message (Expand)	Author	Age	Files	Lines
*	libnl-tiny: add copy of linux/gen_stat.h, it's not available on brcm-2.4	Jo-Philipp Wich	2009-05-10	1	-0/+67
*	libnl-tiny: sync genetlink.h with the kernel header	Felix Fietkau	2009-04-30	1	-0/+14
*	add libnl-tiny as a small replacement for libnl with only genl support included	Felix Fietkau	2009-04-30	4	-0/+412

generated by cgit v1.2.3 (git 2.25.1) at 2026-02-13 03:55:56 +0000

From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Subject: [PATCH] mtd: bcm47xxpart: check for bad blocks when calculating offsets

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
---

--- a/drivers/mtd/parsers/parser_trx.c
+++ b/drivers/mtd/parsers/parser_trx.c
@@ -29,6 +29,33 @@ struct trx_header {
 	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)
 {
@@ -83,21 +110,21 @@ static int parser_trx_parse(struct mtd_i
 	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]);
 		i++;
 	}