1 files changed, 66 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.19/431-mtd-bcm47xxpart-support-TRX-data-partition-being-UBI.patch b/target/linux/generic/patches-3.19/431-mtd-bcm47xxpart-support-TRX-data-partition-being-UBI.patch
new file mode 100644
index 0000000000..4c4720341e
--- /dev/null
+++ b/target/linux/generic/patches-3.19/431-mtd-bcm47xxpart-support-TRX-data-partition-being-UBI.patch
@@ -0,0 +1,66 @@
+--- a/drivers/mtd/bcm47xxpart.c
++++ b/drivers/mtd/bcm47xxpart.c
+@@ -40,6 +40,7 @@
+ #define ML_MAGIC2			0x26594131
+ #define TRX_MAGIC			0x30524448
+ #define SQSH_MAGIC			0x71736873	/* shsq */
++#define UBI_EC_MAGIC			0x23494255	/* UBI# */
+ 
+ struct trx_header {
+ 	uint32_t magic;
+@@ -50,7 +51,7 @@ struct trx_header {
+ 	uint32_t offset[3];
+ } __packed;
+ 
+-static void bcm47xxpart_add_part(struct mtd_partition *part, char *name,
++static void bcm47xxpart_add_part(struct mtd_partition *part, const char *name,
+ 				 u64 offset, uint32_t mask_flags)
+ {
+ 	part->name = name;
+@@ -58,6 +59,26 @@ static void bcm47xxpart_add_part(struct
+ 	part->mask_flags = mask_flags;
+ }
+ 
++static const char *bcm47xxpart_trx_data_part_name(struct mtd_info *master,
++						  size_t offset)
++{
++	uint32_t buf;
++	size_t bytes_read;
++
++	if (mtd_read(master, offset, sizeof(&buf), &bytes_read,
++		     (uint8_t *)&buf) < 0) {
++		pr_err("mtd_read error while parsing (offset: 0x%X)!\n",
++			offset);
++		goto out_default;
++	}
++
++	if (buf == UBI_EC_MAGIC)
++		return "ubi";
++
++out_default:
++	return "rootfs";
++}
++
+ static int bcm47xxpart_parse(struct mtd_info *master,
+ 			     struct mtd_partition **pparts,
+ 			     struct mtd_part_parser_data *data)
+@@ -151,6 +172,8 @@ static int bcm47xxpart_parse(struct mtd_
+ 
+ 		/* TRX */
+ 		if (buf[0x000 / 4] == TRX_MAGIC) {
++			const char *name;
++
+ 			if (BCM47XXPART_MAX_PARTS - curr_part < 4) {
+ 				pr_warn("Not enough partitions left to register trx, scanning stopped!\n");
+ 				break;
+@@ -186,8 +209,9 @@ static int bcm47xxpart_parse(struct mtd_
+ 			 * we want to have jffs2 (overlay) in the same mtd.
+ 			 */
+ 			if (trx->offset[i]) {
++				name = bcm47xxpart_trx_data_part_name(master, offset + trx->offset[i]);
+ 				bcm47xxpart_add_part(&parts[curr_part++],
+-						     "rootfs",
++						     name,
+ 						     offset + trx->offset[i],
+ 						     0);
+ 				i++;