[PATCH 1/6] partitions: gpt: Adjust last_usable_lba to real device size when writing

[Sascha Hauer]

When writing disk images to a device the last_usable_lba field in the GPT
header normally doesn't match the actual device size. Adjust the field
to the actual device size when writing a partition table.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 common/partitions/efi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/common/partitions/efi.c b/common/partitions/efi.c
index 674f920743..28198f25b1 100644
--- a/common/partitions/efi.c
+++ b/common/partitions/efi.c
@@ -862,6 +862,8 @@ static int __efi_partition_write(struct efi_partition_desc *epd, bool primary)
 
 	size = count / GPT_BLOCK_SIZE;
 
+	gpt->last_usable_lba = cpu_to_le64(last_lba(blk) - (size + 2));
+
 	if (primary) {
 		my_lba = 1;
 

-- 
2.47.3