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path: root/drivers/mtd/ubi/scan.c
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Diffstat (limited to 'drivers/mtd/ubi/scan.c')
-rw-r--r--drivers/mtd/ubi/scan.c22
1 files changed, 19 insertions, 3 deletions
diff --git a/drivers/mtd/ubi/scan.c b/drivers/mtd/ubi/scan.c
index b847745394b..e7161adc419 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();
@@ -864,7 +865,9 @@ static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si,
}
}
- /* Both UBI headers seem to be fine */
+ if (ec_corr)
+ ubi_warn("valid VID header but corrupted EC header at PEB %d",
+ pnum);
err = ubi_scan_add_used(ubi, si, pnum, ec, vidh, bitflips);
if (err)
return err;
@@ -936,6 +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.
*/