diff options
Diffstat (limited to 'drivers/mtd/ubi')
| -rw-r--r-- | drivers/mtd/ubi/scan.c | 18 | ||||
| -rw-r--r-- | drivers/mtd/ubi/scan.h | 2 |
2 files changed, 18 insertions, 2 deletions
diff --git a/drivers/mtd/ubi/scan.c b/drivers/mtd/ubi/scan.c index 93361eadab8d..e7161adc419d 100644 --- a/drivers/mtd/ubi/scan.c +++ b/drivers/mtd/ubi/scan.c @@ -75,9 +75,10 @@ static int add_to_list(struct ubi_scan_info *si, int pnum, int ec, dbg_bld("add to free: PEB %d, EC %d", pnum, ec); else if (list == &si->erase) dbg_bld("add to erase: PEB %d, EC %d", pnum, ec); - else if (list == &si->corr) + else if (list == &si->corr) { dbg_bld("add to corrupted: PEB %d, EC %d", pnum, ec); - else if (list == &si->alien) + si->corr_count += 1; + } else if (list == &si->alien) dbg_bld("add to alien: PEB %d, EC %d", pnum, ec); else BUG(); @@ -938,6 +939,19 @@ struct ubi_scan_info *ubi_scan(struct ubi_device *ubi) ubi_msg("empty MTD device detected"); /* + * Few corrupted PEBs are not a problem and may be just a result of + * unclean reboots. However, many of them may indicate some problems + * with the flash HW or driver. Print a warning in this case. + */ + if (si->corr_count >= 8 || si->corr_count >= ubi->peb_count / 4) { + ubi_warn("%d PEBs are corrupted", si->corr_count); + printk(KERN_WARNING "corrupted PEBs are:"); + list_for_each_entry(seb, &si->corr, u.list) + printk(KERN_CONT " %d", seb->pnum); + printk(KERN_CONT "\n"); + } + + /* * In case of unknown erase counter we use the mean erase counter * value. */ diff --git a/drivers/mtd/ubi/scan.h b/drivers/mtd/ubi/scan.h index 1017cf12def5..bab31695dace 100644 --- a/drivers/mtd/ubi/scan.h +++ b/drivers/mtd/ubi/scan.h @@ -102,6 +102,7 @@ struct ubi_scan_volume { * @mean_ec: mean erase counter value * @ec_sum: a temporary variable used when calculating @mean_ec * @ec_count: a temporary variable used when calculating @mean_ec + * @corr_count: count of corrupted PEBs * @image_seq_set: indicates @ubi->image_seq is known * * This data structure contains the result of scanning and may be used by other @@ -125,6 +126,7 @@ struct ubi_scan_info { int mean_ec; uint64_t ec_sum; int ec_count; + int corr_count; int image_seq_set; }; |
