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UBI: introduce a new IO return code

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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>
This commit is contained in:
Artem Bityutskiy
2010-05-03 09:04:39 +03:00
parent 786d783185
commit eb89580e1a
4 changed files with 31 additions and 23 deletions
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5
drivers/mtd/ubi/eba.c
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@@ -418,7 +418,8 @@ retry:
* may try to recover data. FIXME: but this is
* not implemented.
*/
if (err == UBI_IO_BAD_HDR) {
if (err == UBI_IO_BAD_HDR_READ ||
err == UBI_IO_BAD_HDR) {
ubi_warn("corrupted VID header at PEB "
"%d, LEB %d:%d", pnum, vol_id,
lnum);
@@ -962,7 +963,7 @@ write_error:
static int is_error_sane(int err)
{
if (err == -EIO || err == -ENOMEM || err == UBI_IO_BAD_HDR ||
err == -ETIMEDOUT)
err == UBI_IO_BAD_HDR_READ || err == -ETIMEDOUT)
return 0;
return 1;
}