UBI: fix use of "VID" vs. "EC" in header self-check ...

Looks like a typo, using UBI_EC_HDR_SIZE_CRC (note the "EC") to compute
the CRC for the VID header.

This shouldn't cause any functional change, as both structures are 64
bytes. Verified with:

	BUILD_BUG_ON(UBI_VID_HDR_SIZE_CRC != UBI_EC_HDR_SIZE_CRC);

Reported here:
http://lists.infradead.org/pipermail/linux-mtd/2013-September/048570.html

Reported by: Bill Pringlemeir <bpringlemeir@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

UBI: Validate data_size ...

Make sure that data_size is less than LEB size.
Otherwise a handcrafted UBI image is able to trigger
an out of bounds memory access in ubi_compare_lebs().

Cc: stable@vger.kernel.org
Signed-off-by: Richard Weinberger <richard@nod.at>
Reviewed-by: David Gstir <david@sigma-star.at>
Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

UBI: Extend UBI layer debug/messaging capabilities ...

If there is more then one UBI device mounted, there is no way to
distinguish between messages from different UBI devices.
Add device number to all ubi layer message types.

The R/O block driver messages were replaced by pr_* since
ubi_device structure is not used by it.

Amended a bit by Artem.

Signed-off-by: Tanya Brokhman <tlinder@codeaurora.org>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>

Conflicts:
	drivers/mtd/ubi/block.c
	drivers/mtd/ubi/build.c
	drivers/mtd/ubi/cdev.c
	drivers/mtd/ubi/debug.c
	drivers/mtd/ubi/fastmap.c
	drivers/mtd/ubi/io.c
	drivers/mtd/ubi/ubi.h
	drivers/mtd/ubi/vmt.c
	drivers/mtd/ubi/wl.c

Reworked it for barebox.

Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: ubi: Use mtd_peb_erase ...

mtd_peb_erase provides the same functionality as do_sync_erase. Use it.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: ubi: Use mtd_peb_write ...

mtd_peb_write provides the same functionality as ubi_io_write. Use it.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: ubi: Use mtd_peb_read ...

mtd_peb_read provides the same functionality as ubi_io_read. Use
it.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: ubi: Use mtd_peb_torture ...

The mtd-peb API provides a torture test derived from the UBI torture
test. Use it. Since the mtd-peb variant of the torture test will also
mark a block as bad when the test fails this also makes a separate
ubi_io_mark_bad unnecessary.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: ubi: Use mtd_peb_check_all_ff ...

Use mtd-peb function for checking for a all-ff buffer.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: ubi: Use mtd_all_ff/mtd_check_pattern ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

UBI: avoid program operation on NOR flash after erasure interrupted ...

nor_erase_prepare() will be called before erase a NOR flash, it will program '0'
into a block to mark this block. But program data into a erasure interrupted block
can cause program timtout(several minutes at most) error, could impact other
operation on NOR flash. So UBIFS can read this block first to avoid unneeded
program operation.

This patch try to put read operation at head of write operation in
nor_erase_prepare(), read out the data.
If the data is already corrupt, then no need to program any data into this block,
just go to erase this block.

This patch is validated on Micron NOR flash, part number is：JS28F512M29EWHA

Signed-off-by: Qi Wang <qiwang@micron.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>

treewide: remove address of the Free Software Foundation ...

The FSF address has changed; The FSF site says that
address is

  Free Software Foundation
  51 Franklin Street, Fifth Floor
  Boston, MA 02110-1301
  USA

(see http://www.fsf.org/about/contact/)

Instead of updating it each time the address changes,
just drop it completely treewide.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

UBI: reimport UBI from Linux v3.10 ...

This is a fresh UBI import from Linux v3.10

This is done mainly to get fastmap support.

This was tested with the i.MX nand driver, the MXS nand driver and
on CFI NOR flash.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

UBI: remove old ubi support ...

To update to the latest UBI support from the Kernel first remove
the old UBI support. Without it the update will be even less reviewable.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: Use mtd_* functions where appropriate ...

Instead of dereferencing struct mtd_info members directly use
the wrapper functions which have an additional check if the
callback exists if it is optional, like mark_bad or is_bad.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: introduce mtd_block_isbad ...

this allow to do not provide block_isbad at mtd driver level
as example spi flash

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Treewide: remove address of the Free Software Foundation ...

The FSF address has changed in the past. Instead of updating it
each time the address changes, just drop it completely treewide.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

add ubi support from u-boot. Just enough to compile and scan ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>