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2011-03-11mtd: onenand_base: onenand_verify bugfix for writepage non-aligned addressRoman Tereshonkov
In onenand_verify function the address can be writepage non-aligned. When a page is read for comparing the right offset should be used for "this->verify_buf" to get the right matching with compared "buf" buffer. Signed-off-by: Roman Tereshonkov <roman.tereshonkov@nokia.com> Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: OneNAND: return read error for 4KiB page readAdrian Hunter
When reading using the 4KiB page read function, I/O errors could be ignored if more than 1 page was read at a time. Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: nand: fix pointer NULL pointer dereferencingStanislav Fomichev
In 'verify_bbt_descr()', first check the "bd" pointer, then dereference it. Comments amended by Artem. Signed-off-by: Stanislav Fomichev <kernel@fomichev.me> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: tests: print correct valuesRoman Tereshonkov
The ebcnt and pgcnt variable initialization is moved before printk which uses them. Signed-off-by: Roman Tereshonkov <roman.tereshonkov@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: ts5500_flash: avoid calling map_destroy on NULLJulia Lawall
map_destroy dereferences its argument. The call is furthermore only reachable when this argument is NULL. Thus the call is dropped. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression *x; @@ *if (x == NULL) { ... * map_destroy(x); ... return ...; } // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: phram: fix memory leakMathias Krause
Commit 4f678a58 (mtd: fix memory leaks in phram_setup) missed two cases where the memory allocated for name would be leaked. This commit frees the memory when register_device() fails and on unregister_devices(). Signed-off-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: mtdram: initialize writebufsize fieldArtem Bityutskiy
Set the 'mtd->writebufsize' field to 64 to mimic modern CFI flashes. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: m25p80: add support for the EON EN25F32 chipGabor Juhos
Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: adapt writebufsize calculation for concatHolger Brunck
If different chips with different writebufsize are concatenated, the writebufsize from the concat device has to be taken from the device with the largest writebuffer. This writebufsize is used later on in the UBI layer for the min I/O size. Signed-off-by: Holger Brunck <holger.brunck@keymile.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: atmel_nand: Add DMA support to access NandflashHong Xu
Some SAM9 chips have the ability to perform DMA between CPU and SMC controller. This patch adds DMA support for SAM9RL, SAM9G45, SSAM9G46,AM9M10, SAM9M11. Signed-off-by: Hong Xu <hong.xu@atmel.com> Tested-by: Ryan Mallon <ryan@bluewatersys.com> Acked-by: Ryan Mallon <ryan@bluewatersys.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: mtd_blkdevs: local symbols should be staticH Hartley Sweeten
The function blktrans_dev_release and blktrans_dev_put are only used locally in this file and should be static. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: local symbols should be staticH Hartley Sweeten
The three backing_dev_info symbols are only used in this file and should be static. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: mpc5121_nfc: don't treat NULL clk as an errorJamie Iles
clk_get() returns a struct clk cookie to the driver and some platforms may return NULL if they only support a single clock. clk_get() has only failed if it returns a ERR_PTR() encoded pointer. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: drop MTD_CONCAT from Kconfig entirelyDmitry Eremin-Solenikov
As there are no more dependencies on MTD_CONCAT or CONFIG_MTD_CONCAT, drop this entry from Kconfig entirely. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Acked-by: Stefan Roese <sr@denx.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: drop CONFIG_MTD_CONCAT ifdefsDmitry Eremin-Solenikov
As MTD_CONCAT is becoming a part of mtd core, it's now meaningless to to check for it in ifdefs. Drop such references from MTD code. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Acked-by: Stefan Roese <sr@denx.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: drop MTD_CONCAT dependencies from KconfigDmitry Eremin-Solenikov
As MTD_CONCAT is becoming a part of mtd core, it's no longer necessary to depend on it in Kconfig scripts. Drop such references. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Acked-by: Stefan Roese <sr@denx.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: make MTD_CONCAT support mandatoryDmitry Eremin-Solenikov
Move mtdconcat to be an integral part of the mtd core. It's a tiny bit of code, which bears 'say Y if you don't know what to do' note in the Kconfig. OTOH there are several ugly ifdefs depending on the MTD_CONCAT. So, making MTD_CONCAT support mandatory will allow us to clean up code a lot. Kconfig entry is changed to be a bool defaulting to Y, so all code pieces depending on it, will have MTD_CONCAT Kconfig symbol and CONFIG_MTD_CONCAT define. This will be removed in one of next patches. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Acked-by: Stefan Roese <sr@denx.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-03-11mtd: add "platform:" prefix for platform modaliasAxel Lin
Since 43cc71eed1250755986da4c0f9898f9a635cb3bf (platform: prefix MODALIAS with "platform:"), the platform modalias is prefixed with "platform:". Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Cc: stable@kernel.org
2011-03-11mtd: mtd_blkdevs: fix double free on error pathMaxim Levitsky
This one liner patch fixes double free that will occur if add_mtd_blktrans_dev fails. On failure it frees the input argument, but all its users also free it on error which is natural thing to do. Thus don't free it. All credit for finding that bug belongs to reporters of the bug in the android bugzilla http://code.google.com/p/android/issues/detail?id=13761 Commit message tweaked by Artem. Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Cc: stable@kernel.org
2011-03-11mtd: amd76xrom: fix oops at boot when resources are not availableStanislaw Gruszka
For some unknown reasons resources needed by amd76xrom driver can be unavailable. And instead of returning an error, the driver keeps going and crash the kernel. This patch fixes the problem by making the driver return -EBUSY if the resources are not available. Commit messages tweaked by Artem. Reported-by: Russell Whitaker <russ@ashlandhome.net> Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Cc: stable@kernel.org
2011-03-11mtd: fix race in cfi_cmdset_0001 driverJoakim Tjernlund
As inval_cache_and_wait_for_operation() drop and reclaim the lock to invalidate the cache, some other thread may suspend the operation before reaching the for(;;) loop. Therefore the loop must start with checking the chip->state before reading status from the chip. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Acked-by: Michael Cashwell <mboards@prograde.net> Acked-by: Stefan Bigler <stefan.bigler@keymile.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Cc: stable@kernel.org
2011-03-11mtd: jedec_probe: initialise make sector erase command variableAntony Pavlov
In the commit 08968041bef437ec363623cd3218c2b083537ada (mtd: cfi_cmdset_0002: make sector erase command variable) introdused a field sector_erase_cmd. In the same commit initialisation of cfi->sector_erase_cmd made in cfi_chip_setup() (file drivers/mtd/chips/cfi_probe.c), so the CFI chip has no problem: ... cfi->cfi_mode = CFI_MODE_CFI; cfi->sector_erase_cmd = CMD(0x30); ... But for the JEDEC chips this initialisation is not carried out, so the JEDEC chips have sector_erase_cmd == 0. This patch adds the missing initialisation. Signed-off-by: Antony Pavlov <antony@niisi.msk.ru> Acked-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> CC: stable@kernel.org
2011-03-11mtd: jedec_probe: Change variable name from cfi_p to cfiAntony Pavlov
In the following commit, we'll need to use the CMD() macro in order to fix the initialisation of the sector_erase_cmd field. That requires the local variable to be called 'cfi', so change it first in a simple patch. Signed-off-by: Antony Pavlov <antony@niisi.msk.ru> Acked-by: Guillaume LECERF <glecerf@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> CC: stable@kernel.org
2011-03-10Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6 into ↵Russell King
devel-stable
2011-03-08UBI: provide LEB offset informationArtem Bityutskiy
Provide the LEB offset information in the UBI device information data structure. This piece of information is required by UBIFS to find out what are the LEB offsets which are aligned to the max. write size. If LEB offset not aligned to max. write size, then UBIFS has to take this into account to write more optimally. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-03-08UBI: incorporate maximum write sizeArtem Bityutskiy
Incorporate MTD write buffer size into UBI device information because UBIFS needs this field. UBI does not use it ATM, just provides to upper layers in 'struct ubi_device_info'. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-03-07ARM: imx5x: clean up ARCH_MX5XRichard Zhao
Move to SOC_SOC_IMX5X. Leave only places which prevent multi-soc using ARCH_MX5X. Signed-off-by: Richard Zhao <richard.zhao@freescale.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2011-03-02Merge branch 'devel-cleanup' into omap-for-linusTony Lindgren
Conflicts: arch/arm/mach-omap2/timer-gp.c
2011-02-28dt: Eliminate of_platform_{,un}register_driverGrant Likely
Final step to eliminate of_platform_bus_type. They're all just platform drivers now. v2: fix type in pasemi_nand.c (thanks to Stephen Rothwell) Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-02-22mtd: OneNAND: Change dependency of ARCH_EXYNOS4Kukjin Kim
This patch updates EXYNOS4 OneNAND support according to the change of ARCH name, EXYNOS4. Cc: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-02-17mtd: OneNAND: OMAP2: increase multiblock erase verify timeoutRoman Tereshonkov
The current multiblock erase verify read timeout 100us is the maximum for none-error case. If errors happen during multibock erase then the specification recommends to run multiblock erase verify command with maximum timeout 10ms (see specs. for KFM4G16Q2A and KFN8G16Q2A). For the most common non-error case we wait 100us in udelay polling loop. In case of timeout the interrupt mode is used to wait for the command end. Signed-off-by: Roman Tereshonkov <roman.tereshonkov@nokia.com> Acked-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-02-17OMAP: OneNAND: determine frequency in one placeAdrian Hunter
OneNAND frequency is determined when calculating GPMC timings. Return that value instead of determining it again in the OMAP OneNAND driver. Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-02-17omap3: nand: making ecc layout as compatible with romcode eccSukumar Ghorai
This patch overrides nand ecc layout and bad block descriptor (for 8-bit device) to support hw ecc in romcode layout. So as to have in sync with ecc layout throughout; i.e. x-loader, u-boot and kernel. This enables to flash x-loader, u-boot, kernel, FS images from kernel itself and compatiable with other tools. This patch does not enables this feature by default and need to pass from board file to enable for any board. Signed-off-by: Vimal Singh <vimalsingh@ti.com> Signed-off-by: Sukumar Ghorai <s-ghorai@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-02-17omap3: nand: ecc layout select from board fileSukumar Ghorai
This patch makes it possible to select sw or hw (different layout options) ecc scheme supported by omap nand driver. Signed-off-by: Vimal Singh <vimalsingh@ti.com> Signed-off-by: Sukumar Ghorai <s-ghorai@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-02-17omap3: nand: configurable fifo threshold to gain the throughputSukumar Ghorai
Configure the FIFO THREASHOLD value different for read and write to keep busy both filling and to drain out of FIFO at reading and writing. Signed-off-by: Vimal Singh <vimalsingh@ti.com> Signed-off-by: Sukumar Ghorai <s-ghorai@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-02-17omap3: nand: prefetch in irq mode supportSukumar Ghorai
This patch enable prefetch-irq mode for nand transfer(read, write) Signed-off-by: Vimal Singh <vimalsingh@ti.com> Signed-off-by: Sukumar Ghorai <s-ghorai@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-02-17omap3: nand: configurable transfer type per boardSukumar Ghorai
nand transfer type (sDMA, Polled, prefetch) can be select from board file, enabling all transfer type in driver, by default. this helps in multi-omap build and to select different transfer type for different board. Signed-off-by: Sukumar Ghorai <s-ghorai@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-02-17omap3630: nand: fix device size to work in polled modeSukumar Ghorai
zoom3 and 3630-sdp having the x16 nand device. This patch configure gpmc as x16 and select the currect function in driver for polled mode (without prefetch enable) transfer. Signed-off-by: Sukumar Ghorai <s-ghorai@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-02-17kbuild, mtd, net: a few comment typo fixes and rewordingGilles Espinasse
Signed-off-by: Gilles Espinasse <g.esp@free.fr> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-02-16workqueue, freezer: unify spelling of 'freeze' + 'able' to 'freezable'Tejun Heo
There are two spellings in use for 'freeze' + 'able' - 'freezable' and 'freezeable'. The former is the more prominent one. The latter is mostly used by workqueue and in a few other odd places. Unify the spelling to 'freezable'. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: "Rafael J. Wysocki" <rjw@sisk.pl> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Dmitry Torokhov <dtor@mail.ru> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Alex Dubov <oakad@yahoo.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Steven Whitehouse <swhiteho@redhat.com>
2011-02-06UBI: always re-read in case of read failuresArtem Bityutskiy
When the read operation fails, UBI tries to re-read several times in a hope that one of the subsequent reads may succeed. However, currently UBI re-reads only if MTD failed to read all data, but does not re-reads if all the data were read, but with an integrity error (-EBADMSB). This patch makes UBI to always re-try reading. This should be useful for reading NAND pages with unstable bits - re-reading may help to get correct data. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-02-06UBI: cleanup comments about corrupted PEBsArtem Bityutskiy
Just make them a bit more readable and explanatory. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-02-06UBI: add slab cache for ubi_scan_leb objectsArtem Bityutskiy
During scanning UBI allocates one struct ubi_scan_leb object for each PEB, so it can end up allocating thousands of them. Use slab cache to reduce memory consumption for these 48-byte objects, because currently used 'kmalloc()' ends up allocating 64 bytes per object, instead of 48. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-02-06UBI: use raw mtd read function in debugging codeArtem Bityutskiy
This change affects only the debugging code. Namely, use mtd->read() function instead of ubi_io_read() to avoid bit-flips injection (ubi_dbg_is_bitflip()) which we do not want on the debugging path. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-02-06UBI: try to reveal buggy MTD driversArtem Bityutskiy
When reading data from the flash, corrupt the buffer we are about to read to. The idea is to fix the following possible situation: 1. The buffer contains data from previous operation, e.g., read from another PEB previously. The data looks like expected, e.g., if we just do not read anything and return - the caller would not notice this. E.g., if we are reading a VID header, the buffer may contain a valid VID header from another PEB. 2. The driver is buggy and returns use success or -EBADMSG or -EUCLEAN, but it does not actually put any data to the buffer. This may confuse UBI or upper layers - they may think the buffer contains valid data while in fact it is just old data. Thus, try to reveal such buggy MTD drivers with simple debugging code which fills the read buffer with 0x12 constant. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-01-29Revert "UBI: use mtd->writebufsize to set minimal I/O unit size"Artem Bityutskiy
This reverts commit a121f643993474548fe98144514c50dd4f3dbe76. Unfortunately, this commit breaks UBIFS backward compatibility and makes new UBIFS refuse older UBIFS-formatted media: UBIFS error: validate_sb: min. I/O unit mismatch: 8 in superblock, 64 real Thus, we have to revert this patch and work on a better solution. Reported-by: Holger Brunck <holger.brunck@keymile.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-01-26UBI: add a commentary about allocating VID header buffer on stackArtem Bityutskiy
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-01-26UBI: cleanup LEB start calculationsJohn Ogness
Wrong macro was used in calculating the data offset: UBI_EC_HDR_SIZE instead of UBI_VID_HDR_SIZE. The data offset should be VID header offset + VID header size (aligned to the minimum I/O unit). This was not a bug only because currently UBI_EC_HDR_SIZE and UBI_VID_HDR_SIZE have the same value of 64 bytes. Commit message was amended by Artem. Signed-off-by: John Ogness <john.ogness@linutronix.de> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-01-26UBI: fix NOR erase preparation quirkHolger Brunck
In 'nor_erase_prepare()' we want to make sure the UBI headers are corrupted. But it is possible that one of the headers just contains all 0xFFs, which is also OK, because UBI will erase it in case of a power cut. Signed-off-by: Holger Brunck <holger.brunck@keymile.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2011-01-17Merge git://git.infradead.org/mtd-2.6Linus Torvalds
* git://git.infradead.org/mtd-2.6: (59 commits) mtd: mtdpart: disallow reading OOB past the end of the partition mtd: pxa3xx_nand: NULL dereference in pxa3xx_nand_probe UBI: use mtd->writebufsize to set minimal I/O unit size mtd: initialize writebufsize in the MTD object of a partition mtd: onenand: add mtd->writebufsize initialization mtd: nand: add mtd->writebufsize initialization mtd: cfi: add writebufsize initialization mtd: add writebufsize field to mtd_info struct mtd: OneNAND: OMAP2/3: prevent regulator sleeping while OneNAND is in use mtd: OneNAND: add enable / disable methods to onenand_chip mtd: m25p80: Fix JEDEC ID for AT26DF321 mtd: txx9ndfmc: limit transfer bytes to 512 (ECC provides 6 bytes max) mtd: cfi_cmdset_0002: add support for Samsung K8D3x16UxC NOR chips mtd: cfi_cmdset_0002: add support for Samsung K8D6x16UxM NOR chips mtd: nand: ams-delta: drop omap_read/write, use ioremap mtd: m25p80: add debugging trace in sst_write mtd: nand: ams-delta: select for built-in by default mtd: OneNAND: lighten scary initial bad block messages mtd: OneNAND: OMAP2/3: add support for command line partitioning mtd: nand: rearrange ONFI revision checking, add ONFI 2.3 ... Fix up trivial conflict in drivers/mtd/Kconfig as per DavidW.