From f41f8b42db092e505382f7120994de21590dff48 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Thu, 16 Oct 2014 20:52:16 +0200 Subject: [PATCH] UBI: Detect EOF mark and erase all remaining blocks MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Rafał Miłecki --- drivers/mtd/ubi/io.c | 5 +++++ 1 file changed, 5 insertions(+) --- a/drivers/mtd/ubi/io.c +++ b/drivers/mtd/ubi/io.c @@ -727,6 +727,7 @@ bad: * o %UBI_IO_FF if only 0xFF bytes were read (the PEB is supposedly empty) * o a negative error code in case of failure. */ +static bool erase_all_next = false; int ubi_io_read_ec_hdr(struct ubi_device *ubi, int pnum, struct ubi_ec_hdr *ec_hdr, int verbose) { @@ -753,6 +754,10 @@ int ubi_io_read_ec_hdr(struct ubi_device } magic = be32_to_cpu(ec_hdr->magic); + if (magic == 0xdeadc0de) + erase_all_next = true; + if (erase_all_next) + return read_err ? UBI_IO_FF_BITFLIPS : UBI_IO_FF; if (magic != UBI_EC_HDR_MAGIC) { if (mtd_is_eccerr(read_err)) return UBI_IO_BAD_HDR_EBADMSG;