UBI: introduce a new IO return code

This patch introduces the %UBI_IO_BAD_HDR_READ return code for
the I/O level function. We will use this code in order to distinguish
between "corrupted header possibly because this is non-ubi data" and
"corrupted header possibly because of real data corruption and ECC error".

So far this patch does not introduce any functional change, just a
preparation.

This patch is pased on a patch from
Sebastian Andrzej Siewior <sebastian@breakpoint.cc>

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Reviewed-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Tested-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/mtd/ubi/scan.c b/drivers/mtd/ubi/scan.c
index b878a7661f5a..c45900744107 100644
--- a/drivers/mtd/ubi/scan.c
+++ b/drivers/mtd/ubi/scan.c
@@ -745,7 +745,7 @@ static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si,
                 bitflips = 1;
         else if (err == UBI_IO_PEB_EMPTY)
                 return add_to_list(si, pnum, UBI_SCAN_UNKNOWN_EC, &si->erase);
-        else if (err == UBI_IO_BAD_HDR) {
+        else if (err == UBI_IO_BAD_HDR_READ || err == UBI_IO_BAD_HDR) {
                 /*
                  * We have to also look at the VID header, possibly it is not
                  * corrupted. Set %bitflips flag in order to make this PEB be
@@ -813,7 +813,7 @@ static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si,
                 return err;
         else if (err == UBI_IO_BITFLIPS)
                 bitflips = 1;
-        else if (err == UBI_IO_BAD_HDR ||
+        else if (err == UBI_IO_BAD_HDR_READ || err == UBI_IO_BAD_HDR ||
                  (err == UBI_IO_PEB_FREE && ec_corr)) {
                 /* VID header is corrupted */
                 err = add_to_list(si, pnum, ec, &si->corr);