UBI: fix check_data_ff return code

When the data does not contain all 0xFF bytes, 'check_data_ff()' should return
1, not -EINVAL; Also, the caller ('process_eb()') should not add the PEB to the
"corrupted" list if there was a read error.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/mtd/ubi/scan.c b/drivers/mtd/ubi/scan.c
index 2fbb571b9828..e7b800b1d072 100644
--- a/drivers/mtd/ubi/scan.c
+++ b/drivers/mtd/ubi/scan.c
@@ -784,7 +784,7 @@ static int check_data_ff(struct ubi_device *ubi, struct ubi_vid_hdr *vid_hdr,
         ubi_dbg_print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
                                ubi->peb_buf1, ubi->leb_size, 1);
         mutex_unlock(&ubi->buf_mutex);
-        return -EINVAL;
+        return 1;
 }
 
 /**
@@ -936,7 +936,10 @@ static int process_eb(struct ubi_device *ubi, struct ubi_scan_info *si,
                          * have to check what is in the data area.
                          */
                         err = check_data_ff(ubi, vidh, pnum);
-                if (!err)
+
+                if (err < 0)
+                        return err;
+                else if (!err)
                         /* This corruption is caused by a power cut */
                         err = add_to_list(si, pnum, ec, 1, &si->erase);
                 else