Flash partitions may specify MTDPART_SIZ_FULL (=0) as the size of the partition to indicate "the remainder of the flash". Make this work with device-tree "fixed-partitions" as well.
This makes MTD partitioning compatible with the Linux kernel, see: https://github.com/torvalds/linux/blob/master/include/linux/mtd/partitions.h#L29 https://github.com/torvalds/linux/blob/master/drivers/mtd/mtdpart.c#L123 Previously, this could only be done through MTDPARTS so this change allows boards like topic_miami to migrate from `mtdparts`/`mtdids` to devicetree partitions. Signed-off-by: Mike Looijmans <mike.looijm...@topic.nl> --- Changes in v2: Amend commit text to add links to Linux code and explain the rationale drivers/mtd/mtdpart.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index 88094b81e7a..5284890bd88 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -910,11 +910,13 @@ int add_mtd_partitions_of(struct mtd_info *master) continue; offset = ofnode_get_addr_size_index_notrans(child, 0, &size); - if (offset == FDT_ADDR_T_NONE || !size) { - debug("Missing partition offset/size on \"%s\" partition\n", + if (offset == FDT_ADDR_T_NONE) { + debug("Missing partition offset on \"%s\" partition\n", master->name); continue; } + if (size == MTDPART_SIZ_FULL) + size = master->size - offset; part.name = ofnode_read_string(child, "label"); if (!part.name) -- 2.43.0 Met vriendelijke groet / kind regards, Mike Looijmans System Expert TOPIC Embedded Products B.V. Materiaalweg 4, 5681 RJ Best The Netherlands T: +31 (0) 499 33 69 69 E: mike.looijm...@topic.nl W: www.topic.nl Please consider the environment before printing this e-mail
