ubi_err("error %d while reading %d bytes from PEB %d:%d, "
"read %zd bytes", err, len, pnum, offset, read);
ubi_dbg_dump_stack();
+
+ /*
+ * The driver should never return -EBADMSG if it failed to read
+ * all the requested data. But some buggy drivers might do
+ * this, so we change it to -EIO.
+ */
+ if (read != len && err == -EBADMSG) {
+ ubi_assert(0);
+ err = -EIO;
+ }
} else {
ubi_assert(len == read);
dbg_io("read EC header from PEB %d", pnum);
ubi_assert(pnum >= 0 && pnum < ubi->peb_count);
+ if (UBI_IO_DEBUG)
+ verbose = 1;
err = ubi_io_read(ubi, ec_hdr, pnum, 0, UBI_EC_HDR_SIZE);
if (err) {
dbg_io("read VID header from PEB %d", pnum);
ubi_assert(pnum >= 0 && pnum < ubi->peb_count);
+ if (UBI_IO_DEBUG)
+ verbose = 1;
p = (char *)vid_hdr - ubi->vid_hdr_shift;
err = ubi_io_read(ubi, p, pnum, ubi->vid_hdr_aloffset,