UBI: remove duplicate IO error codes
The 'UBI_IO_PEB_EMPTY' and 'UBI_IO_PEB_FREE' are essentially the same
and mean that there are only 0xFF bytes instead of headers. Simplify
UBI a little by turning them into a single 'UBI_IO_FF' error code.
Also, stop maintaining commentaries in 'ubi_io_read_vid_hdr()' which are
almost identical to commentaries in 'ubi_io_read_ec_hdr()'.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
diff --git a/drivers/mtd/ubi/ubi.h b/drivers/mtd/ubi/ubi.h
index 24a7c76..774bdca 100644
--- a/drivers/mtd/ubi/ubi.h
+++ b/drivers/mtd/ubi/ubi.h
@@ -85,10 +85,7 @@
/*
* Error codes returned by the I/O sub-system.
*
- * UBI_IO_PEB_EMPTY: the physical eraseblock is empty, i.e. it contains only
- * %0xFF bytes
- * UBI_IO_PEB_FREE: the physical eraseblock is free, i.e. it contains only a
- * valid erase counter header, and the rest are %0xFF bytes
+ * UBI_IO_FF: the read region of flash contains only 0xFFs
* UBI_IO_BAD_HDR: the EC or VID header is corrupted (bad magic or CRC)
* UBI_IO_BAD_HDR_EBADMSG: the same as %UBI_IO_BAD_HDR, but also there was a
* data integrity error reported by the MTD driver
@@ -96,8 +93,7 @@
* UBI_IO_BITFLIPS: bit-flips were detected and corrected
*/
enum {
- UBI_IO_PEB_EMPTY = 1,
- UBI_IO_PEB_FREE,
+ UBI_IO_FF = 1,
UBI_IO_BAD_HDR,
UBI_IO_BAD_HDR_EBADMSG,
UBI_IO_BITFLIPS