Signed-off-by: NBryan Wu <bryan.wu@analog.com>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

There is no suspend/resume operation in NFC driver at all, currently.
Signed-off-by: NBryan Wu <bryan.wu@analog.com>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

With CONFIG_MTD_PARTITIONS not set, got this:
drivers/mtd/nand/plat_nand.c:113: warning: unused variable 'pdata'
Signed-off-by: NLi Zefan <lizf@cn.fujitsu.com>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Patch for unlocking all Intel flash that has instant locking on power up.
The patch has been tested on Intel M18, P30 and J3D Strata Flash.
  1.    The automatic unlocking can be disabled for a particular partition
         in the map or the command line.
     a. For the bit mask in the map it should look like:
         .mask_flags   = MTD_POWERUP_LOCK,
     b. For the command line parsing it should look like:
         mtdparts=0x80000(bootloader)lk
  2.    This will only unlock parts with instant individual block locking.
         Intel parts with legacy unlocking will not be unlocked.
Signed-off-by: NJustin Treon <justin_treon@yahoo.com>
Signed-off-by: NJared Hulbert <jaredeh@gmail.com>
Acked-by: NNicolas Pitre <nico@cam.org>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Call parse_mtd_partitions before checking board's partition_info, so
that "mtdparts=" option can override board's default setting.
Signed-off-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Various minor cleaups to mtdoops:
  * Don't support the mtd->erasesize < OOPS_PAGE_SIZE case
  * Tweak printks and make the device mtdoops connects to more visible
  * CON_PRINTBUFFER flag is uneeded
Signed-off-by: NRichard Purdie <rpurdie@rpsys.net>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Add a spinlock to ensure writes to the mtdoops buffer memory are
sequential and don't race.
Signed-off-by: NRichard Purdie <rpurdie@rpsys.net>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Writing to the flash needs to be done in a workqueue. The console
write functions may be called in any context which can lead to
lockups otherwise.
Signed-off-by: NRichard Purdie <rpurdie@rpsys.net>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Add further error return code checks to the mtdoops driver.
Signed-off-by: NRichard Purdie <rpurdie@rpsys.net>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

drivers/mtd/devices/lart.c:119:#define FLASH_DEVICE_16mbit_BOTTOM 0x88f488f4
As was, unless "manufacturer != FLASH_MANUFACTURER" this returned true
Signed-off-by: NRoel Kluin <12o3l@tiscali.nl>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

drivers/mtd/ubi/scan.c: In function 'ubi_scan':
drivers/mtd/ubi/scan.c:772: warning: 'ec' may be used uninitialized in this function
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

drivers/mtd/ubi/wl.c:746: warning: 'pe' may be used uninitialized in this function
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Signed-off-by: NScott Wood <scottwood@freescale.com>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

Signed-off-by: NIlpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

$ codiff $OBJ.old $OBJ
drivers/mtd/chips/jedec_probe.c:
  cfi_jedec_setup  | -320
  jedec_probe_chip | -7073
 2 functions changed, 7393 bytes removed, diff: -7393

drivers/mtd/chips/jedec_probe.c:
  jedec_reset | +1151
 1 function changed, 1151 bytes added, diff: +1151

drivers/mtd/chips/jedec_probe.o:
 3 functions changed, 1151 bytes added, 7393 bytes removed, diff: -6242
Signed-off-by: NIlpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

This is just not necessary. We re-write whole layout copy, so
the old contents cannot show up again sice scan process will
drop it.
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>

Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>

In function onenand_verify_oob, local variable oobbuf shall be unsigned char.

In the case of a value is >= 0x80, it's unequal in comparing the value in an unsigned char and signed char.
Signed-off-by: NSheng Yongjie (Sam) <samsheng@trident.com.cn>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>

Some chips don't set the ONENAND_CTRL_LOAD bit.
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>

Use the higher bits for other purpose.
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>

Consolidate OneNAND operation order as OneNAND Spec.
It also doesn't break previous operation order.
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>

Signed-off-by: NAdrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>

Signed-off-by: NAdrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>

The single-bit error correction was, well, incorrect. For determing which
bit to correct it was using P1' P2' P4' P8' instead of P1 P2 P4 P8, and
it was using P16' P32' P64' P128' P256' P512' P1024' P2048' instead of
P16 P32 P64 P128 P256 P512 P1024 P2048.
Signed-off-by: NMatt Reimer <mreimer@vpop.net>
Signed-off-by: NDavid Woodhouse <dwmw2@infradead.org>

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

ubi_eba_atomic_leb_change() has to just map the LEB to a free PEB
if data length is zero.
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>

Instead of passing vol_id to all functions and then find
struct ubi_volume, pass struct ubi_volume pointer.
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>

Since we do not change semantics of seek(), changing the file
pointer while updating does not make much sense.
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>

Add more information about layout volume to make userspace tools
use the macros instead of constants. Also rename UBI_LAYOUT_VOL_ID
to make it consistent with other macros.
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>

Old gcc complains:

CC      drivers/mtd/ubi/wl.o
drivers/mtd/ubi/wl.c: In function 'wear_leveling_worker':
drivers/mtd/ubi/wl.c:746: warning: 'pe' may be used uninitialized in this function
CC      drivers/mtd/ubi/scan.o
drivers/mtd/ubi/scan.c: In function 'ubi_scan':
drivers/mtd/ubi/scan.c:772: warning: 'ec' may be used uninitialized in this function
drivers/mtd/ubi/scan.c:772: note: 'ec' was declared here
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>

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

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

Data offset is VID header offset + VID header size aligned to
the min. I/O unit size up.
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>

Since the data offset parameter was removed, the size of
the parameters array is now 2, not 3.
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>

The problem: NAND flashes have different amount of initial bad physical
eraseblocks (marked as bad by the manufacturer). For example, for 256MiB
Samsung OneNAND flash there might be from 0 to 40 bad initial eraseblocks,
which is about 2%. When UBI is used as the base system, one needs to know
the exact amount of good physical eraseblocks, because this number is
needed to create the UBI image which is put to the devices during
production. But this number is not know, which forces us to use the
minimum number of good physical eraseblocks. And UBI additionally
reserves some percentage of physical eraseblocks for bad block handling
(default is 1%), so we have 1-3% of PEBs reserved at the end, depending
on the amount of initial bad PEBs. But it is desired to always have
1% (or more, depending on the configuration).

Solution: this patch adds an "auto-resize" flag to the volume table.
The volume which has the "auto-resize" flag will automatically be re-sized
(enlarged) on the first UBI initialization. UBI clears the flag when
the volume is re-sized. Only one volume may have the "auto-resize" flag.

So, the production UBI image may have one volume with "auto-resize"
flag set, and its size is automatically adjusted on the first boot
of the device.
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>

Save 12 bytes of RAM per volume by using bit-fields instead of integers.
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>

drivers/mtd/ubi/cdev.c: In function ‘vol_cdev_read’:
drivers/mtd/ubi/cdev.c:187: warning: unused variable ‘vol_id’
CC [M]  drivers/mtd/ubi/kapi.o
drivers/mtd/ubi/kapi.c: In function ‘ubi_leb_erase’:
drivers/mtd/ubi/kapi.c:483: warning: unused variable ‘vol_id’
drivers/mtd/ubi/kapi.c: In function ‘ubi_leb_unmap’:
drivers/mtd/ubi/kapi.c:544: warning: unused variable ‘vol_id’
drivers/mtd/ubi/kapi.c: In function ‘ubi_leb_map’:
drivers/mtd/ubi/kapi.c:582: warning: unused variable ‘vol_id’
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>

This slab cache is not really needed since the number of objects
is low and the constructor does not make much sense because we
allocate oblects when doint I/O, which is way slower then allocation.
Suggested-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>

struct class_device is going away, this converts the code to use struct
device instead.
Signed-off-by: NTony Jones <tonyj@suse.de>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>