2 files changed, 31 insertions, 15 deletions

diff --git a/drivers/mtd/ubi/scan.c b/drivers/mtd/ubi/scan.c
index c45900744107..a20f278d0c6c 100644
--- a/drivers/mtd/ubi/scan.c
+++ b/drivers/mtd/ubi/scan.c
@@ -72,16 +72,19 @@ static int add_to_list(struct ubi_scan_info *si, int pnum, int ec,
 {
         struct ubi_scan_leb *seb;
 
-        if (list == &si->free)
+        if (list == &si->free) {
                 dbg_bld("add to free: PEB %d, EC %d", pnum, ec);
-        else if (list == &si->erase)
+                si->free_peb_count += 1;
+        } else if (list == &si->erase) {
                 dbg_bld("add to erase: PEB %d, EC %d", pnum, ec);
-        else if (list == &si->corr) {
+                si->erase_peb_count += 1;
+        } else if (list == &si->corr) {
                 dbg_bld("add to corrupted: PEB %d, EC %d", pnum, ec);
-                si->corr_count += 1;
-        } else if (list == &si->alien)
+                si->corr_peb_count += 1;
+        } else if (list == &si->alien) {
                 dbg_bld("add to alien: PEB %d, EC %d", pnum, ec);
-        else
+                si->alien_peb_count += 1;
+        } else
                 BUG();
 
         seb = kmalloc(sizeof(struct ubi_scan_leb), GFP_KERNEL);
@@ -517,6 +520,7 @@ int ubi_scan_add_used(struct ubi_device *ubi, struct ubi_scan_info *si,
         sv->leb_count += 1;
         rb_link_node(&seb->u.rb, parent, p);
         rb_insert_color(&seb->u.rb, &sv->root);
+        si->used_peb_count += 1;
         return 0;
 }
 
@@ -751,7 +755,7 @@ static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si,
                  * corrupted. Set %bitflips flag in order to make this PEB be
                  * moved and EC be re-created.
                  */
-                ec_corr = 1;
+                ec_corr = err;
                 ec = UBI_SCAN_UNKNOWN_EC;
                 bitflips = 1;
         }
@@ -816,6 +820,9 @@ static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si,
         else if (err == UBI_IO_BAD_HDR_READ || err == UBI_IO_BAD_HDR ||
                  (err == UBI_IO_PEB_FREE && ec_corr)) {
                 /* VID header is corrupted */
+                if (err == UBI_IO_BAD_HDR_READ ||
+                    ec_corr == UBI_IO_BAD_HDR_READ)
+                        si->read_err_count += 1;
                 err = add_to_list(si, pnum, ec, &si->corr);
                 if (err)
                         return err;
@@ -855,7 +862,6 @@ static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si,
                         err = add_to_list(si, pnum, ec, &si->alien);
                         if (err)
                                 return err;
-                        si->alien_peb_count += 1;
                         return 0;
 
                 case UBI_COMPAT_REJECT:
@@ -943,8 +949,9 @@ struct ubi_scan_info *ubi_scan(struct ubi_device *ubi)
          * 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);
+        if (si->corr_peb_count >= 8 ||
+            si->corr_peb_count >= ubi->peb_count / 4) {
+                ubi_warn("%d PEBs are corrupted", si->corr_peb_count);
                 printk(KERN_WARNING "corrupted PEBs are:");
                 list_for_each_entry(seb, &si->corr, u.list)
                         printk(KERN_CONT " %d", seb->pnum);
diff --git a/drivers/mtd/ubi/scan.h b/drivers/mtd/ubi/scan.h
index ff179ad7ca55..2576a8d1532b 100644
--- a/drivers/mtd/ubi/scan.h
+++ b/drivers/mtd/ubi/scan.h
@@ -91,10 +91,16 @@ struct ubi_scan_volume {
  * @erase: list of physical eraseblocks which have to be erased
  * @alien: list of physical eraseblocks which should not be used by UBI (e.g.,
  *         those belonging to "preserve"-compatible internal volumes)
+ * @used_peb_count: count of used PEBs
+ * @corr_peb_count: count of PEBs in the @corr list
+ * @read_err_count: count of PEBs read with error (%UBI_IO_BAD_HDR_READ was
+ *                  returned)
+ * @free_peb_count: count of PEBs in the @free list
+ * @erase_peb_count: count of PEBs in the @erase list
+ * @alien_peb_count: count of PEBs in the @alien list
  * @bad_peb_count: count of bad physical eraseblocks
  * @vols_found: number of volumes found during scanning
  * @highest_vol_id: highest volume ID
- * @alien_peb_count: count of physical eraseblocks in the @alien list
  * @is_empty: flag indicating whether the MTD device is empty or not
  * @min_ec: lowest erase counter value
  * @max_ec: highest erase counter value
@@ -102,7 +108,6 @@ 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
  *
  * This data structure contains the result of scanning and may be used by other
  * UBI sub-systems to build final UBI data structures, further error-recovery
@@ -114,10 +119,15 @@ struct ubi_scan_info {
         struct list_head free;
         struct list_head erase;
         struct list_head alien;
+        int used_peb_count;
+        int corr_peb_count;
+        int read_err_count;
+        int free_peb_count;
+        int erase_peb_count;
+        int alien_peb_count;
         int bad_peb_count;
         int vols_found;
         int highest_vol_id;
-        int alien_peb_count;
         int is_empty;
         int min_ec;
         int max_ec;
@@ -125,7 +135,6 @@ struct ubi_scan_info {
         int mean_ec;
         uint64_t ec_sum;
         int ec_count;
-        int corr_count;
 };
 
 struct ubi_device;
@@ -135,7 +144,7 @@ struct ubi_vid_hdr;
  * ubi_scan_move_to_list - move a PEB from the volume tree to a list.
  *
  * @sv: volume scanning information
- * @seb: scanning eraseblock infprmation
+ * @seb: scanning eraseblock information
  * @list: the list to move to
  */
 static inline void ubi_scan_move_to_list(struct ubi_scan_volume *sv,