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| author | Ingo Molnar <mingo@elte.hu> | 2009-08-15 12:06:12 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-08-15 12:06:12 +0200 |
| commit | be750231ce1599b86fbba213e3da8344ece262e2 (patch) | |
| tree | a506c461082692bb5bab8b9bb63a762816329454 /drivers/mtd/ubi/scan.c | |
| parent | 18408ddc01136f505ae357c03f0d8e50b10e0db6 (diff) | |
| parent | 39e6dd73502f64e2ae3236b304e160ae30de9384 (diff) | |
| download | kernel-crypto-be750231ce1599b86fbba213e3da8344ece262e2.tar.gz kernel-crypto-be750231ce1599b86fbba213e3da8344ece262e2.tar.xz kernel-crypto-be750231ce1599b86fbba213e3da8344ece262e2.zip | |
Merge branch 'perfcounters/urgent' into perfcounters/core
Conflicts:
kernel/perf_counter.c
Merge reason: update to latest upstream (-rc6) and resolve
the conflict with urgent fixes.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/mtd/ubi/scan.c')
| -rw-r--r-- | drivers/mtd/ubi/scan.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/mtd/ubi/scan.c b/drivers/mtd/ubi/scan.c index a423131b617..b847745394b 100644 --- a/drivers/mtd/ubi/scan.c +++ b/drivers/mtd/ubi/scan.c @@ -781,11 +781,22 @@ static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si, return -EINVAL; } + /* + * Make sure that all PEBs have the same image sequence number. + * This allows us to detect situations when users flash UBI + * images incorrectly, so that the flash has the new UBI image + * and leftovers from the old one. This feature was added + * relatively recently, and the sequence number was always + * zero, because old UBI implementations always set it to zero. + * For this reasons, we do not panic if some PEBs have zero + * sequence number, while other PEBs have non-zero sequence + * number. + */ image_seq = be32_to_cpu(ech->image_seq); if (!si->image_seq_set) { ubi->image_seq = image_seq; si->image_seq_set = 1; - } else if (ubi->image_seq != image_seq) { + } else if (ubi->image_seq && ubi->image_seq != image_seq) { ubi_err("bad image sequence number %d in PEB %d, " "expected %d", image_seq, pnum, ubi->image_seq); ubi_dbg_dump_ec_hdr(ech); |