in ubiformat_write() we may not write trailing empty areas in erase blocks as UBI assumes them to be empty and writable. This code path is used when fastboot handles sparse images. Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx> --- common/ubiformat.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/common/ubiformat.c b/common/ubiformat.c index 1edfc5b2a3..d8399ad9d6 100644 --- a/common/ubiformat.c +++ b/common/ubiformat.c @@ -745,6 +745,7 @@ int ubiformat_write(struct mtd_info *mtd, const void *buf, size_t count, while (count) { size_t now = mtd->erasesize - offset_in_peb; + int new_len; if (now > count) now = count; @@ -780,7 +781,8 @@ int ubiformat_write(struct mtd_info *mtd, const void *buf, size_t count, } } - ret = mtd_peb_write(mtd, buf, peb, offset_in_peb, now); + new_len = drop_ffs(mtd, buf, now); + ret = mtd_peb_write(mtd, buf, peb, offset_in_peb, new_len); if (ret < 0) return ret; -- 2.30.2